A Course/Module is defined as a body of knowledge and skills capable of being
utilized on its own or as a ... their trades and their application and as a foundation
for post-secondary ... Guidance Notes For Teachers Teaching The Curriculum.
ED/STV/2001/PI/10
Fabrication and Welding Engineering National Technical Certificate (NTC) and Advanced National Technical Certificate (ANTC)
Curriculum and Course Specifications
NATIONAL BOARD FOR TECHNICAL EDUCATION Federal Republic of Nigeria
UNESCO – Nigeria Project
2001
Fabrication and Welding Engineering - National Technical Certificate (NTC) and Advanced National Technical Certificate (ANTC)
Curriculum and Module Specifications OFFICE: PLOT B, BIDA ROAD, P.M.B. 2239, KADUNA
NATIONAL TECHNICAL CERTIFICATE AND ADVANCED NATIONAL TECHNICAL CERTIFICATE PROGRAMMES
1
Table of Contents General Information .............................................................................................................3 Curriculum Table (NTC).......................................................................................................7 Curriculum Table (ANTC) ....................................................................................................8 National Technical Certificate ..............................................................................................9 General Metalwork I .........................................................................................................9 General Metalwork II ......................................................................................................27 Sheet metal Work...........................................................................................................33 Gas Welding and cutting ................................................................................................42 Metal Arc Welding ..........................................................................................................51 Structural Steel Work .....................................................................................................62 Advanced National Technical Certificate ...........................................................................72 Welding ..........................................................................................................................72 Structural Mechanics and Specification..........................................................................87 Structural Steel Work .....................................................................................................91 Sheet metal work ...........................................................................................................95 List of tools and equipment for welding and fabrication engineering................................100 Guideline for textbooks development...............................................................................103 Recommended books for fabrication and welding engineering craft practice ..................105 List of Participants ...........................................................................................................106
2
General Information AIM To give training and impart the necessary skills leading to the production of craftsmen, technicians and other skilled personnel who will be enterprising and self-reliant. ENTRY QUALIFICATIONS Craft Programme Candidates must not be less than 14 years of age and should have successfully completed three years of Junior Secondary education or its equivalent. Special consideration may be given to sponsored candidates with lower academic qualifications who hold trade test certificates and are capable of benefiting from the programme. Advanced Craft Programme Candidates should possess the National Technical Certificate or its equivalent and should have had a minimum of two years post qualification cognate industrial experience. The Curriculum The Curriculum of each programme is broadly divided into three components: a. General Education, which accounts for 30% of the total hours required for the programme. b. Trade Theory, Trade Practice and Related Studies which account for 65% and c. Supervised Industrial Training/Work Experience, which accounts for about 5% of the total hours required for the programme. This component of the course which may be taken in industry or in college production unit is compulsory for the full-time students. Included in the curriculum is the teacher's activity and learning resources required for the guidance of the teacher. Unit Course/Modules A Course/Module is defined as a body of knowledge and skills capable of being utilized on its own or as a foundation or pre-requisite knowledge for more advanced work in the same or other fields of study. Each trade when successfully completed can be used for employment purposes.
3
Behavioural Objectives These are educational objectives, which identify precisely the type of behaviour a student should exhibit at the end of a course/module or programme. Two types of behavioural objectives have been used as the curriculum. They are: a. General Objectives b. Specific learning outcomes General objectives are concise but general statements of the behaviour of the students on completion of a unit of week such as understanding the principles and application in: a. Orthographic projection in engineering/technical drawing; b. Loci in Mathematics c. Basic concepts of politics and government in Political Science d. Demand and supply in Economics Specific learning outcomes are concise statements of the specific behaviour expressed in units of discrete practical tasks and related knowledge the students should demonstrate as a result of the educational process to ascertain that the general objectives of course/programme have been achieved. They are more discrete and quantitative expressions of the scope of the tasks contained in a teaching unit. General Education In Technical Colleges The General Education component of the curriculum aims at providing the trainee with complete secondary education in critical subjects like English Language, Economics, Physics, Chemistry, Biology, Entrepreneurial Studies and Mathematics to enhance the understanding of machines, tools and materials of their trades and their application and as a foundation for post-secondary technical education for the above average trainee. Hence, it is hoped that trainees who successfully complete their trade and general education may be able to compete with their secondary school counterparts for direct entry into the polytechnics or colleges of education (technical) for ND or NCE courses respectively. The Social Studies component is designed to broaden the trainee's social skills and his understanding or his environment. For the purpose of certification, only the first three courses in mathematics will be required. The remaining modules are optional and are designed for the above average students. National Certification The NTC and ANTC programmes are run by Technical Colleges accredited by NBTE. NABTEB conducts the final National examination and awards certificates.
4
Trainees who successfully complete all the courses/modules specified in the curriculum table and passed the national examinations in the trade will be awarded one of the following certificates: S/NO LEVEL
CERTIFICATE
Technical Programme 1.
Craft Level
National Technical Certificate
2.
Advanced Craft Level
Advanced National Technical Certificate
Guidance Notes For Teachers Teaching The Curriculum The number of hours stated in the curriculum table may be increased or decreased to suit individual institutions' timetable provided the entire course content is properly covered and the goals and objectives of each module are achieved at the end of the term. The maximum duration of any module in the new scheme is 300 hours. This means that for a term of 15 weeks, the course should be offered for 20 hours a week. This can be scheduled in sessions of 4 hours in a day leaving the remaining hours for general education. However, (properly organized and if there are adequate resources), most of these courses can be offered in two sessions a day, one in the morning and the other one in the afternoon. In so doing, some of these programmes may be completed in lesser number of years than at present. The sessions of 4 hours include the trade theory and practice. It is left to the teacher to decide when the class should e held in the workshop or in a lecture room. Integrated Approach In The Teacher Of Trade Theory, Trade Science And Trade Calculation The traditional approach of teaching trade science and trade calculation as separate and distinct subjects in technical college programmes is not relevant to the new programme as it will amount to a duplication of the teaching of mathematics and physical science subjects in the course. The basic concepts and principles in mathematics and physical science are the same as in the trade calculation and trade science. In the new scheme therefore, qualified persons in these fields will teach mathematics and physical science and the instructors will apply the principles and concepts in solving trade science and calculation problems in the trade theory classes. To this end, efforts have been made to ensure that mathematics and science modules required to be able to solve technical problems were taken as pre-requisite to the trade module.
5
Evaluation Of Programme/Module For the programme to achieve its objectives, any course started at the beginning of a term must terminate at the end of the term. Instructors should therefore device methods of accurately assessing the trainees to enable them give the student's final grades at the end of the term. A national examination will be taken by all students who have successfully completed their modules. The final award will be based on the aggregate of the scores attained in the course work and the national examination.
6
Curriculum Table (NTC) NTC FABRICATION AND WELDING ENIGINEERING CRAFT PRACTICE YEAR 1 S/No Subject
Module
YEAR 2
YEAR 3
Term Term Term Term Term Term Term Term Term
Code
1
2
3
1
2
3
1
2
3
Total Hours for each
1
CMA 12- Mathematics
T P T P T P T P T P T P T P T P T P
216
2
-
2
-
2
-
2
-
2
-
2
- 2
-
2
-
2
-
288
2
-
2
-
2
-
3
-
3
-
3
- 3
-
3
-
3
-
288
2
-
2
-
2
-
2
1
2
1
2
1 2
1
2
1
2
1
288
2
-
2
-
2
-
2
1
2
1
2
1 2
1
2
1
2
1
288
2
-
2
-
2
-
2
-
2
-
2
- 2
-
-
-
-
-
216
15 2
CEN 11- English 17
3
CPH 10- Physics 12
4
CCH 11- Chemistry 12
5
CEC 11- Economics 13
6
CBM 11 Entrepreneurship
-
-
-
-
-
-
2
-
2
-
2
-
-
-
-
-
-
-
72
7
CTD 11- Drawing
-
3
-
3
-
3
-
3
-
3
-
3 -
2
-
2
-
2
288
-
-
-
-
-
-
1
2
1
2
1
2 1
2
1
2
-
-
180
9
CME 11 General Metal Work I 2 5 2
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
168
10
CME 12 General Metal Work
13 8
ICT 11- Computer Studies 15
-
-
-
-
2
3
-
-
-
-
-
-
-
-
-
-
-
-
60
II 11
CFW 11 Sheet Metal Work
-
-
-
-
-
-
-
-
-
-
-
- 3
6
3
6
-
-
216
12
CFW 12 Gas Welding and
-
-
-
-
-
-
-
-
-
-
-
- 3
6
3
6
-
-
216
Cutting 13
CFW 13 Metal Arc Welding
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
6
3
6
216
14
CFW 14 Structural Steel Work
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
6
3
6
216
15
CFW 11 Sheet metal Work
-
-
-
-
-
-
-
-
-
-
2
6 2
5
-
-
-
-
180
GRAND TOTAL
12 8 12 8 12 6 14 7 14 7 14 7 18 18 22 30 15 16
7
2928
Curriculum Table (ANTC) ANTC FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE YEAR 1 S/No Subject Code
Module
Term 1 Term 2 Term 3 Total Hours for each T
P
T
P
T
P
1.
CMA 21-22
Mathematics
2
-
2
-
2
-
72
2
CEN 21-22
English and Communication
2
-
2
-
2
-
72
3
CTD 21
Engineering Drawing and Design
-
3
-
3
-
-
72
4
CTD 22
Fabrication Drawing
-
-
-
3
-
3
72
5
CEC 21-23
Economics
2
-
2
-
2
-
72
6
CBM 21
Entrepreneurship
2
-
2
-
2
-
72
7
ICT 21-22
Computer Studies
1
2
2
2
-
-
72
8
CFW 21
Welding
2
5
2
6
-
-
180
9
CFW 22
Structural Mechanics & Specification
-
-
2
5
2
6
180
10
CFW 23
Structural Steel work
2
5
2
6
-
-
180
11
CFW 24
Sheet metal work
-
-
2
5
2
6
180
13 15 17 30 12 15
1044
TOTAL
8
National Technical Certificate General Metalwork I PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Module Specification: PRACTICAL/KNOWLEDGE REQUIREMENTS General Objective: On completion of this module the student will be able to: Understand workshop safety rules and their application in machine shop. 1. Know the physical properties, manufacturing process and application of ferrous and nonferrous metals in common use 2. Select and use common measuring, marking out, cutting and striking tools. 3. Understand the basic working principles of drilling machine and be able to use it for various types of screws treads rivets, and be able to rivet and cut screws by hand. 4. Understand the application of various types of screw threads and rivets, and be able to rivet and cut screws by hand. 5. Understand the ISO system of tolerances and fits, and their application in engineering production. 6. Produce simple engineering components on the bench. 7. Understand the essential features and working principles of the center lathe and carry out basic operations such as turning, stepped turning facing, taper turning., knurling, chamfering and undercutting. Practical Competence: On completion of this module, the student will be able to: 1. Use all tools correctly ensuring the machinery guards and protective eye shields are used at all times. 2. Comply with the general rules for safe practice in the work environment at all this. 3. Use and select handtools for carrying out various bench fitting and assembly tasks 4. Tools: hacksaws, taps, reamers, drills, dividers, surface gauge 5. Produce threads using taps and dies 6. Correctly grind drill point angles: Drills: Twist and flat drills 7. Select and set drilling machine speeds to carryout a range of operations using the appropriate coolants. Drilling, reaming, counter sinking, counterboring 8. Perform metal joining by a range of processes. Cut through the joints and investigate the depth of penetration of the metals at the interface. Processes: Soldering, brazing, and fusion welding. 9. Mark out on metals and other materials, datum lines, angles, radii/circles and hole positions using a range of tools.
9
PRACTICAL TASKS General Objective 1.0: On completion of the following practical task, the trainee will demonstrate the following abilities: Week Specific Learning Outcome
Teachers Activities
1.1 Using and handling hand tools,
• Demonstrate safe ways of • Hand tools files, hacksaw
portable power tools and machine
handling basic hand tools
1.2 Lifting, moving and storing materials or • Show a film on industrial 1-3
Resources • Television, Video machines
job
safety
• Posters on artificial
1.3 Demonstrate first aid application in
• Demonstrate how to treat
respiration
cases of minor cuts, electric shock, burns. energy cases like artificial respiration cold compress, etc • Assess student
10
General Objective 2.0: Measuring, Marking, Cutting and Striking Week Specific Learning Outcome
Teachers Activities
2.1 Describe the essential features • Demonstrate how to use
Resources • Micrometer, vernier
micrometer, venier caliper,
calipers, vernier height
a. micrometer
vernier height gauge,
gauge, combination sets
b. vernier caliper
combination set
• Steel rules, dividers,
c. Venier height
• Demonstrate the maintenance punches, trammel, scribe
gauge
and care of the instruments
angle plate, vee block
d. combination set
listed above
center square
• Perform marking out for the
• Flat file, hand file, try
and use of the following
2.2 Maintain and care for the
students to learn and practice till square
instruments listed above
they become competent
• File card, flat file
2.3 Perform marking out exercise
• Demonstrate how flat surface
• Ball pein hammers, mallet
on plane surfaces including profiles can be tested using surface plate • Hacksaw blade, Hacksaw
4-6
2.4 File a piece of metal to given
and try square
specifications using any of the
• Demonstrate how files are
following: Cross filing, draw filing,
cleaned and state the
filing square and flat surfaces
precautions to be taken against
2.5 Test surface for flatness using
pinning. Students to practice till
surface plate and try square and
competent
state precautions to be taken to
• Demonstrate the application of
avoid pinning
hammers and mallets for
2.6 Maintain files in good working
engineering purposes
conditions
• Demonstrate how a hacksaw
2.7 Apply various hammers and
blade can be inserted correctly
mallets e.g ball pein, rubber
• Demonstrate how to use
mallets, etc for engineering
adjustable hacksaw, junior
purposes
hacksaw piercing
2.8 Select and insert hacksaw
• Students should be allowed to
blade correctly
practice till competent
2.9 Cut metal and other
• Guide students to produce
engineering materials to given
simple engineering components
specification using the adjustable
like open ended spanner,
hacksaws, junior hacksaws,
engineers square, tool makers
piercing saw, etc drills and Drilling. clamp, center square, etc. • Make a simple precision fitting project like hexagonal mild steel bar making push fit through a mild steel plate
11
frame.
General Objective 3.0: Machine Tools Week Specific Learning Outcome
Teachers Activities
Resources
3.1 Setting up and operate a drilling machine • Demonstrate how to set • Bench drill pillar drill, drill bits
in given situations
up and operate a drilling
Note Setting up drilling machine should
machine in given situation • Bench drill, pillar drill, twist
include
• Students to practice till
drill, flat drill, counter sink
competent
drill, counterbore drill, center
a. change of spindle speed
• Demonstrate how a twist drill b. adjustment of drilling table
drill can be sharpened
• Drills, taps, tap wrench, die
to required height and angle,
correctly
and die stock
holding of work on drilling
• Demonstrate with the
• Rivets and sets of drill bits
table to required height and
appropriate facility how to • Surface table, surface
angle, holding of work on
perform all the drilling
plate, marking solution,
drilling table using
operations
center/dot punches, scribing
appropriate clamping device
• Students to practice till
block
they become competent c. Install the drill bit in chuck
7-9
• Give notes as well as
3.2 Sharpen a twist drill correctly to
demonstrate the operation
manufactures' specification
sequence in cutting
3.3 Perform with facility the following
internal (through and
operations:
blind) and external
a. drilling blind holes
threads by hand method
b. drilling round stock
• Demonstrate how
c. counterboring and
riveting can be done and
counter-sinking
let the students practice
d. drilling large diameter
same till they become
holes
competent • Demonstrate the
3.4 List the operation sequence and cut
marking out procedures
internal (through and blind) and external
on bench working using
threads by hand method and state
datum lines datum faces,
precautions to be taken when taping on the
etc
bench
• Students to practice till
3.5 Rivet metals together in any given
they become competent
situations
• Assess the student.
3.6 Mark out only given bench work using datum points, datum lines, datum faces, chalk or marking solution center or dot punch, scribing block or measurement transfer.
12
General Objective 4.0: Lathe and Lathework Week Specific Learning Outcome
Teachers Activities
Resources
4.1 Sharpen cutting tool for plain turning,
• Guide the students to
• Point tools, grinding
shouldering, parting off and facing
sharpen cutting tool for plain machine, lathe machine
operations
turning shouldering, parting • 3-jaw chuck and lathe
4.2 Set up rough and turned stock in 3-
off and facing operations
machine
jaw-chuck
and allow students to
• Point tools and lathe
4.3 Select appropriate cutting tool and set practice till competent
machine
them up to center height for turning or
• Demonstrate how to set-up • Lathe machine and
facing operations
rough and turned stock in a accessories
4.4 Carryout chuck work involving facing,
3-jaw-chuck and operate
• Centre lathe and
step turning, undercutting radiusing,
lathe. Allow students to
accessories like catch plate,
chamfering, parting off and knuring
practice till competent
face plate, dog lathe, lathe
Note Components should be produced to
• Guide the students to
centers fixed steady and
select appropriate cutting
traveling steading
10-12 specified tolerance and finish
4.5 Produce simple components involving tools and set them up to taper turning using the compound slide
• Round nose turning tool,
center height for lathe work fine finishing tool, form tool, (turning or facing)
parting off tool, boring tool,
• Students should be
bar of good length and 4mm
allowed to practice till they
diameter, Live/dead centers
become competent
catch plates
• Prepare simple exercises
• Standard exercises or
that will guide students to
prepared
produce components involving taper turning using the compound slide. Assess the students Assessment profile: Practical to take 60% of the overall assessment
13
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective: 1.0 understand workshop safety rules and application in machine shop Week Specific Learning Outcome
Teachers Activities
Resources
On completion of this module, the trainee
• State sources of hazards • Safety posters, common
should be able to:
in the workshop.
hard tools like files
Workshop safety rules and
• Through questions and
hacksaw
practice
answer, determine whether • Television, Video
1.1 State sources of hazards in the workshop
the students grasped the
machine.
and how to prevent them.
topic
• Overall, goggles, gloves,
e.g.
• Show a film on industrial
saftyboots, head shield,
a. handling and using hand
safety.
fire extinguishers.
tools, portable power tools and
• Through question and
machines;
answer determine comprehension.
b. stepping on or striking
• Demonstrate how to treat
obstructions left on floors or
emergency cases
benches;
• like artifical respiration, cold compress etc.
1
c. lifting, moving and storing
• List the safety equipment
materials or jobs;
and wears that are essential in the workshop.
d. using inflammable or
• Give detail notes and
corrosive liquids and gases;
explanation in each topic ae.
e. inhaling vapours or fumes;
• Use questions and
1.2 Explain the application of factory safety
answer to determine
regulations in the machine shop.
comprehension.
1.3 Name safety equipment and wears
• Assess the students
essential in the machine shop, and state their application in working situations. Note: Example of safety wears and equipment should include overall, eye goggles, gloves, safety boots, helmet, fire extinguishers, etc
14
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective: 1.0 understand workshop safety rules and application in machine shop Week Specific Learning Outcome
Teachers Activities
1.4 Outline safety rules and
• Explain safety rules and regulation in the
regulations relating to:-
workshop, highlighting a - g in 1.4.
a. clothing and health
• Explain appropriate procedures to be
hazards;
taken in the event of workshop accident.
b. workshop hygiene; c. movement and other behaviour of workers in the workshops; d. materials handling; e. tool handling, storage and usage; f. machine operation; g. fire protection. 1.5 Understand appropriate procedures in the events of a workshop accident 1.6 Examples of procedures may include: a. application of first aid to the victim; b. removal or rectification of the accident; c. reporting the accident to the appropriate authority; d. keeping a record of accidents for management use.
15
Resources
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 2.0: Know the physical properties, manufacturing process and application of ferrous and non-ferrous metals in common use Week Specific Learning Outcome
Teachers Activities
Resources
2.1 Explain the meaning of the following • Give detail notes and explanations to
2
general physical properties of metals:
explain the meaning of the following
ductility, malleability, strength,
general physical properties of metals:
roughness, brittleness, elasticity,
ductility, malleability, strength,
plasticity.
toughness, brittleness, elasticity, plasticity. Assess the students • Give detailed notes and explanations for the topics in 2.1
2.3 Describe the basic composition and
• Give notes and specific examples of
• Video and
properties of plain carbon steels, cast
tools and equipment made from the
television including
iron and alloy steel and state their
various steels and cast iron.
cassettes on
application in the engineering industry.
• Examples of steels and cast irons
production
Note: Specific examples of tools and
should include plain carbon steels,
processes.
equipment made from the various steel
dead mild steels, mild steel, medium
and cast iron should be mentioned.
carbon steel high carbon steel, gray
Examples of steels and cast irons should cast iron, malleable cast iron, iron include: plain carbon steels, dead mild
carbide, alloy cast iron high speed
steels, mild steel, medium carbon steel, steels, high tensile steels, tungsten, high carbon steel.
stainless steels.
Cast Irons - gray cast
• Give notes and explanation on the
iron malleable cast iron,
cupola process, the blast furnace and
iron carbide, alloy cast
the direct reduction process of
irons (spheroidal and
manufacture of steel.
acicular)
• This can be preceded by film show
Alloy Steels - High
and a visit to be manufacturing plant.
speed steels, high
• Give detail notes and explanations
tensile steels, tungsten,
describing the physical properties and
stainless steels, stellite
applications of the following non-ferrous
2.4 Outline:
metals: copper, tin, zinc, aluminium,
a. the copula process of
aluminium alloys, brass, (muntzmetal,
manufacture of cast iron;
cartridge brass, gilding metal) etc.
16
b. the blast furnace
bronze, manganese bronze bell metal,
process of manufacture
aluminium bronze phosphor bronze and
of pig iron;
lead. Assess the students
c. the direct reduction process of manufacture of steel. Note: A visit to a steel manufacturing plant is recommended. 2.5 Describe the physical properties and applications of non-ferrous metals below: copper, tin, zinc, aluminium and aluminium alloys brass (muntz metal, cartridge brass, gilding etc) metal,bronze (manganese bronze tunmetal, bell metal, aluminium bronze, phosphor bronze and lead. Benchwork and Tools:
17
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 3.0: Select and use common measuring, marking out, cutting and striking tools. Week Specific Learning Outcome
Teachers Activities
Resources
3.1 Explain with examples the
• Prepare notes that will clearly differentiate
• Steel rule, dividers
difference between "line" and
between "line" and "end" measurement.
calipers, trammel,
"end" measurement.
• Prepare notes and examples that will explain scribe angle plate
3.2 Explain the use of datum
the use of datum points, datum lines, and
vee block, centre
points, datum lines and datum
datum faces in marking out.
square.
faces in marking out.
• Give explanations regarding the functions
• Micrometer
3.3 Describe, the functions and and application of: steel rule, dividers, calipers vernier callipers application of the following
(inside, outside and oddleg) trammel, scriber,
instruments used in metal-work, angle plate, vee block, centre square
gauge combination
steel rule, dividers, calipers
• Prepare notes that will describe the various
set
(inside, outside and odd-legs),
types of files, stating their grades and
• Flat file, hard file,
trammel, scriber angle plate,
applications. By type it means: flat, square
round file square,
vee-block, centre square.
round, halfround, three square, warding, mill
half round,
3.4 Describe the various types
and rasp.
triangular warding,
of files, stating their grades and • Prepare detail notes that will classify the 3
vernier height
mill file, rasp file.
applications.
common files used in the metal work as well as • Flat file, handfile
Note:
stafing the composition of materials used for
engineers square.
Types of files
their manufacture.
• Surface plate try
should include:
• Show a bench vice and demonstrate the work square (engineers
flat, square,
ithe vice for
square)
round, half
• Show a bench vice and demonstrate the
• File card
round, three
technique of holding work in the vice for filing,
• Flat file
square, warding
tapping and designing operations.
• Bench vice.
pollar, mill and
• Prepare detail notes that will describe the
• Bench vice.
rasp.
functions of the various parts of a bench vice,
• Ball pein hammers
its holding power while performing various
mallets.
3.5 Classify the common files
use in metal work and state their operations. composition of material used for • filing, tapping and designing operations their manufacture.
• Prepare detail notes that will describe the
3.6 Sketch the bench vise,
functions of the various parts of a bench vice,
explain its clamping power and
its holding power while performing various
demonstrate the technique of
operations
18
holding work in the vise for
• Assess the students
filing, tapping and designing
• Prepare detail notes and demonstrations that
operations.
will describe and uses of: cold chisels, centre
3.7 Describe the functions of the punch dot punch, scrapers and power various parts of a bench vice, its hacksaw. holding power while performing various operations on its, such as filing, tapping sawing etc. 3.8 Describe and use the following tools: a. cold chisels (flat, cross, cut half round, diamond-point) b. centre punch and dot punch c. scrappers (flat, triangular, half round) d. power hack saw
19
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 3.0: Select and use common measuring, marking out, cutting and striking tools. Week Specific Learning Outcome
Teachers Activities
Resources
3.9 Describe the various parts of a hack saw • Prepare notes that will describe • Cold chisels, and their function.
the various parts of a hacksaw
3.10 Describe the common types of hacksaw and their functions.
centre punches, dot punch, scrapers
blades, their range of pitches and their
• Show sample of hacksaw blades power hacksaw
applications.
as well as prepare notes that will
blades.
3.11 State the safety precautions to be
describe the common types of
• Hacksaw blade
observed when using a hand hacksaw
hacksaw blades, their range of
• Hacksaw frame
pitches and their applications.
• Adjustable
• Prepare notes that will show
hacksaw junior
correct way of inserting blades.
hacksaw piercing
• Prepare detail notes and
saw.
4
explanation, stating the safety precautions to be observed when using a hand hacksaw. • Prepare notes that will describe the uses of various hacksaws. • Assess the students General Objective 4.0: Understand the working principles of a drilling machine, use it to drill and ream holes on metals and other engineering materials Week Specific Learning Outcome
Teachers Activities
Resources
4.1 Identify the various types of drilling
Show different types of drilling
• Bench drill
machines.
machines
• Pillar drill.
4.2 Describe, with sketches, the main
Make notes and drawings that will • Twist drill, flat drill
features of a bench or pillar drilling machine. identify the various types of drilling counter sink drill, 4.4 Describe with sketches and state where m/cs. 5-6
counter bore drill
each of the following types of drills are best
Prepare detail notes and drawings combination centre
suited.
that will describe the main
e.g. twist drill (taper shank, parallel shank
features of a bench or pillar drilling Drilling machines
and jobbers drill, and their relative merits),
machine.
flat drill, countersink drill, counter bore drill,
Solve many problems for students
combination centre drill.
to practice.
4.5 Explain the effects of the following faults Prepare notes and drawings that
20
drill. and its accessories.
in a ground twist drill bit:
will describe where each of the
a. point angle too acute;
following drills are best suited
b. point angle too obtuse;
Twist drill (taper shank, parallel
c. cutting edges at unequal
shank, jobber drill and their
angles;
relative merits), flat drill,
d. insufficient lip clearance;
counterbore drill and combination
e. excessive lip clearance.
center drill.
4.6 Calculate spindle revolution or cutting
Assess the students.
speed for specified size of drill using the formulae:N = 1000S/π S = πdN/1000 Where S = cutting speed (m/min) N = revolution/minute D = diameter of drill (mm) π = 3.142 4.8 State the cause and remedy of drilling faults such as:a. drill breaking; b. drill coloured blue; c. walls of drilled hole left rough; d. chipped cutting lips. 4.9 State the safety precautions to be observed when using a drilling machine. 4.10 Explain the purpose of reaming and describe different types of hand and machine reamers. 4.11 Ream to given specification by hand and machine method.
21
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 5.0: Understand the applications of various types of screw threads, rivet and cut screws by hand. Week Specific Learning Outcome
Teachers Activities
Resources
5.1 Sketch the thread forms below and • Give detailed notes with diagrams that Diagrams/charts of state their applications:-
will show the various forms of trade and thread forms
- the ISO metric thread
their uses.
Sample of taps and
- the unified thread
• State the functions of taps, tap
tap wrenches.
- Whitworth and British
wrench, die and die stock.
Parallel reamers,
fine threads
• Demonstrate how to produce
taper reamers, and
- British Association
internaland external threach.
twist drills.
(BA) thread
• Give detailed notes that will explain
- British Standard pipe
the meaning of tapping size or tapping
- Square thread
drill and estimate its values using the
- Acme thread
formula:
- Buttress thread.
T=D-P Where
5.2 Sketch and state the functions of:a. taps (taper tap,
T=
second tap, plug)
tapping
b. tap wrench
diamet
c. die and die stock.
er
5.3 Explain the meaning of tapping size
D=
or tapping drill and estimate its value in
thread
given situations using formulae such
top
as:-
diamet
T=D-P
er and
Where T = tapping
P=
diameter
Pitch
D = thread top diameter P = pitch
22
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 5.0: Understand the applications of various types of screw threads, rivet and cut screws by hand. Week Specific Learning Outcome
Teachers Activities
5.4 State precautions to be taken when • Prepare notes that will state precautions taping on the bench.
to be taken when tapping on bench.
5.5 Describe and differentiate types of
• Give notes and diagrams that will describe
rivets.
and differentiate types of rivets, rivet sets,
e.g. Snap and pan head, mushroom
and its uses and guide to calculate the
and counter-sunk head, flat head, dod
diameter of rivet and riveting allowance.
rivet, etc.
• Assess the students.
Resources • Rivet sets, drills.
5.6 Sketch the rivet set and state its use. 5.7 Calculate the diameter of rivet and riveting allowance in given situations. General Objective 6.0: Understand the ISO tolerances and fits and its application in engineering production. Week Specific Learning Outcome
Teachers Activities
6.1 Differentiate between the following:- • Give detailed notes that will differentiate
8
Resources •
a. nominal size
between nominal size, limits, tolerance and • Charts on
b. limits (upper and
fits.
tolerances, limits
lower)
• Prepare detailed note and diagrams that
and fits.
c. tolerance (unilateral
will explain the important of tolerance and
and bilateral)
fits in engineering production as well as
d. fit (clearance,
describing the ISO systems of limits and
transition interference).
fits.
6.2 Explain the importance of tolerance • Give notes and explanations that will and fit in engineering production and
guide in calculating the amount of tolerance
describe briefly the ISO system of limits and types of fits in given situations. and fits.
• Assess the students.
6.3 Determine by calculation the amount of tolerance and types of fit in given situations.
23
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 7.0: Produce simple Engineering Components on the bench. Production Week Specific Learning Outcome 7.1 Explain layout procedures
Teachers Activities
Resources
• Teachers to prepare notes and explanations
• Lesson notes
from working drawing of simple to guide the students in producing simple engineering components or
engineering components as in 7.1
tools such as:-
• Assess the students.
a. open ended spanner b. engineer's try square c. tool maker's clamp d. plate bracket or gusset (involving 9
rounds, angles, holes) e. centre square. 7.2 Explain how to produce any simple engineering component to given specifications including dimensions, tolerance and finish 7.3 Explain how to carry out simple precision fitting project. e.g. hexagonal mild steel bar making push fit through a mild steel plate.
24
• Diagrams and charts.
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 8.0 Understand the essential features and working principles of the centre lathe and use it to carry out basic operations such as plain turning, stepped turning, facing taper turning, chamfering, and under-cutting Week Specific Learning Outcome
Teachers Activities
Resources
8.1 Describe the essential features of a
• With the aid of a diagram explain the
• Centre lathe
centre lathe and state their functions
essential features of a lathe machine
and accessories
e.g lathe bed, headstock, tailstock, saddle or • Explain the working principles and basic carriage, etc.
operations of a lathe machine
face plates,
8.2 Explain the working principles of the
• Demonstrate some basic operations on
centers, fixed
centre lathe.
lathe machine.
and traveling
8.3 Identify and state the functions of centre • Prepare detailed notes that will describe
steadies.
lathe accessories such as: catch or driving
the essential features of center lathe and
• Charts of
plate, face plate, lathe dog or carrier, lathe
their functions.
center lathe and
centres, fixed and travelling steadies.
• Give notes and diagrams that will explain capstan lathe.
8.4 Explain the difference between the
the working principles of center lathe and
centre lathe, capstan lathe, in terms, of their functions of its accessories.
10
like catch plates,
• Round nose turning tool,
main features and functions.
• Give explanations that will show the
finishing tool,
8.5 Name types of cutting fluids used for
difference between center lathe and
site finishing,
lathe turning operations and state their
capstan lathe in terms of their main features knife tool, form
composition and purposes.
and functions.
8.6 Outline safety precautions to be
• Prepare notes that will list types of cutting tool, and boring
observed when working on the lathe
fluid use for lathe turning operations and
8.7 Sketch and describe common tools:
their composition and purposes.
e.g butt-brazed tool, tipped tool, bit and
• Prepare detailed notes and explanation
holder.
that will outlines safety precautions,
Note:
common tools and materials used in Tool description should
marking them.
include tool materials e.g
• Give detailed notes and diagrams that will
plain carbon steel, high
explain the functions of too angles (rake,
speed steel, stellite,
clearance) stating their values for different
cemented carbide, diamond.
metals to be machined.
8.8 Explain with sketches the functions of
• Assess the students
tool angles rake, clearance, and state their values for different metals to be machined.
25
tool, parting off tool.
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE Course: General metal Work I
Course Code: CME 11
Contact Hours 7hrs/wk
Course Specification: Knowledge Requirement General Objective 8.0 Understand the essential features and working principles of the centre lathe and use it to carry out basic operations such as plain turning, stepped turning, facing taper turning, chamfering, and under-cutting Week Specific Learning Outcome
Teachers Activities
Resources
8.9 Differentiate between various tool shapes • Give notes and diagrams of
• Charts on tool
and state their uses e.g. Round nose rougher, various tool shapes and their
height
fine finishing, side finishing, knife tool, form
uses.
• Charts and
tool, parting off tool, boring tool, etc.
• Prepare detailed notes and
diagrams of
8.10 Explain with sketches the effects of
explanations to cover 8.10 to
different machining
wrong setting of cutting tool: e.g. vibration and 8.15 chatter, tool rubbing against or digging into the • Solve many problems for the job.
students practice.
8.11 Define cutting speed and feed with
• Assess the students
respect to lathe operation. 8.12 Calculate the cutting speed and feed for given turning operation. 8.13 Estimate the rate of metal removal and time required for carrying out specified turning 11-12 operations 8.14 State precautions to be observed when turning between centres. 8.15 Set up the lathe for and carry out basic turning operations between centres. 8.16 Compute required taper dimensions from given data using taper ratic angle formulae i.e. 8.17 Taper Ratio = [d2 - d1]/L OR
where θ = taper angle d1 - small and diameter d2 = large end diameter L = length of taper
26
operations.
General Metalwork II COURSE:
GENERAL METAL WORK
MODULE:
CME 12 GENERAL METAL WORK II
PRE-REQUISITE: CME 11 CONTACT HOUR: 2 HRS THEORY 3 HRS PRACTICAL GOAL:
The module is designed to introduce the trainee to basic processes in mechanical engineering such as forging, sheet-metal work and welding.
General Objectives: On completion of this module, the trainee should be able to: 1. Understand the basic principles and processes of heat treatment of metal in the workshop. 2. Produce simple engineering components by forging. 3. Understand the basic principles and techniques of gas and metal arc welding and apply them in fabricating simple metal components. PRACTICAL COMPETENCE: On completion of this module students will be able to: 1. Carry out heat treatment of metal in the workshop 2. Produce simple engineering components by forging 3. Carryout gas/arc welding and apply them in fabricating simple engineering components
27
PRACTICAL TASKS General Objective 1.0: On completion of the following practical task, the trainee will demonstrate the following abilities: Week Specific Learning Outcome:
1-2
Teachers Activities
Resources
1.1 Carry out the following heat
• Demonstrate heat treatment • Furnace, Forge tongs
treatment processes Hardening,
processes and explain the
tempering, annealing normalizing,
stages
case hardening on given plain carbon • Demonstrate the annealing steel, engineering component or tool process on brass, copper and 1.2 Anneal copper, brass and
aluminium for various
aluminium for various purposes
purposes. • Assess the students.
28
General Objective 2.0: Forging Processes Week Specific Learning Outcome:
Teachers Activities
Resources
2.1 Select appropriate forging tools
• Demonstrate with appropriate • Anvil, swage block, leg vice,
and produce to specification given
forging tools how to produce
engineering components by forging
some engineering components set, sets of hammer, punchers,
processes
and let the student practice till drifts, fillers, top swage,
forging hammers, hot set cold
a. upsetting - drawing
they become competent
bottom swage, flatter, open
down
• Assess the students
tongs, hallow bit
3-4
b. setting down -
5-8
twisting c. forge welding (scarf and spice welds) d. bending, turning closed ring e. forming an eye General Objective 3.0: Welding Processes
Week Specific Learning Outcome:
Teachers Activities
Resources
3.1 Set up and operate gas or metal
• List and identify gas and
• Oxygen, cylinders and
arc welding equipment in given
metal arc welding equipment
acetylene, regulations arc,
situations.
• Demonstrate the use of both welding set goggles, shield,
Note: Equipment operation should
gas and metal welding
electrodes, diagrams and
include choice of correct nozzles or
equipment; and all the
charts various welding joints
electrode. Adjustment for correct gas students to practice pressure/flame or voltage 9-12
• Demonstrate to the students
3.2 Prepare joints for welding in given how to prepare joints for situations
welding purposes
3.3 Weld given components by arc or • Guide students to weld gas welding methods, and state
various components using
safety precautions to be observed
both gas and arc welding process and state safety precautions to students to practice till competent
Assessment: Practical - 60% of overall assessment
29
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE MODULE: GENERAL METAL WORK II
MODULE CODE: CME 12
CONTACT HOURS: 5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS General Objective:1.0 Understand the basic principles and processes of heat treatment of metal in the workshop. Week Specific Learning Outcome
Teacher Activities
Resources
1.1 Explain briefly the structural behaviour of • Prepare detail notes that will • Recommended Text plain carbon steel as it is heated from room temperature to about
1-4
1000oC.
explain the structural
books
behaviour of plain carbon
• Lesson notes, etc
a. hardening
steel as it is heated from room
b. tempering
temperature to about 1000oC.
c. annealing
• Prepare detail notes that will
d. normalising
explain the meaning of
e. case-hardening.
hardening in metalwork.
1.2 Explain the meaning of hardening metal
• Prepare notes that will
work.
outline safety precautions
1.3 Outline safety precautions relating to heat relating to heat treatment treatment processes apply them in given
processes.
situations.
• Assess the students
30
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE MODULE: GENERAL METAL WORK II
MODULE CODE: CME 12
CONTACT HOURS: 5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS General Objective 2.0: Understand the techniques of producing simple engineering components by forging. Week Specific Learning Outcome
Teacher Activities
Resources
2.1 Explain with outline sketch the main
• Prepare detail notes and
Forge and forging tools.
features and working principles of the black
diagrams that will explain the
smith's forge.
main features and working
2.2 Describe and state the functions of
principles of the black smith's
common forging tools. e.g anvil, swage block, forge. leg vice, forging hammers, hot and cold sets, • Prepare notes and diagrams set hammer, punches and drifts, hardie,
that will describe the functions
fullers, top and bottom swages flatter, tongs
of common forging tools.
(open mouth, closed mouth, hollow bit, etc.). • Prepare detail notes that will 5-6
2.3 Describe with sketches the following
describe the following forging
7-8
forging operations:
operations: upsetting, drawing
a. upsetting
down, setting down, twisting,
b. drawing down
forge welding, bending,
c. setting down
forming closed ring, forming
d. twisting
an eye.
e. forge welding (scarf and
• Assess the students.
splice welds) f. bending g. forming closed ring h. forming an eye.
31
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN MECHANICAL ENGINEERING CRAFT PRACTICE MODULE: GENERAL METAL WORK II
MODULE CODE: CME 12
CONTACT HOURS: 5hrs/wk
MODULE SPECIFICATION: KNOWLEDGE REQUIREMENTS General Objective 3.0 Understand the basic principles and techniques of gas and metal are welding and apply them in fabricating simple metal components. Week Specific Learning Outcome
9 - 12
Teacher Activities
Resources
3.1 Describe the equipment and explain the
• Prepare detail notes and
• Charts
basic principles and application of gas and
diagrams that will describe the • Oxygen cylinder
metal arc welding.
equipment and explain the
acetylene cylinder
3.2 State the safety precautions to be
basic principles and
regulations arc welding
observed and apply them in given welding
application of gas and metal
set goggles, shield
situations.
arc welding.
electrode.
• Prepare diagrams of joints
• Diagrams and charts
that the students will practice. of various welding • Prepare detail notes that will joints, and techniques. state the safety precautions to be observed during welding. • Assess the students. Week 13 Examination - Practical 60%, Theory 40%
32
Sheet metal Work PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE MODULE:
CFW 11 - SHEET METALWORK
PRE-
CME 12
REQUISITE: DURATION:
18 HOURS PER WEEK - 6 HOURS THEORY 12 HOURS PRACTICAL
GOAL:
This module is designed to produce a skilled sheet metal work who has good knowledge of the use and application of sheet metal working equipment, material, processes, techniques and safety practices.
GENERAL OBJECTIVES On completion of this module, the trainee should be able to: 1. Apply appropriate workshop processes, techniques and tools to mark out and form projects in sheet metal work 2. Solder and braze various sheet metal projects with maximum safety. 3. Produce finished sheet metal project involving: edge stiffening, beading, finished, either as part of the corporate production process or as an independent process. 4. Draw, develop and produce templates for production of sheet metal projects. PRACTICAL COMPETENCE On completion of this module the student will be able to 1. Mark out and form projects in sheet metal work 2. Solder and braze various sheet metal project with maximum safety 3. Produce finished sheet metal projects involving various production processes 4. Draw, develop and produce templates for production of sheet metal projects.
33
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out, And Form Pojects In Sheet Metal Work: Week
Year 3 Term 1
Specific Learning Outcome
Teachers Activities
Resources
1.1 Mark out the following projects
• Demonstrate the marking out of
• Lesson plan
on sheet metal material applying
projects on sheet metal by applying • Appropriate Tools and
appropriate tools, techniques and
the appropriate techniques and
Equipment
safety practices:
safety practices.
• Steel rule, divider,
a. rectangular
• Demonstrate marking out items
scriber, compass and
container
listed on sheet of metal
chalkboard
1.2 Cut sheet metal to given sizes
• Demonstrate sheet metal cutting
• Lesson Plan
using appropriate tools/machines
to given sizes using appropriate
• Appropriate Tools and
tools and machine
Machines
1.3 Form sheet metal to given
• Demonstrate the formation of
• Lesson plan
shapes using appropriate tools,
sheet metal
• Appropriate Tools,
machines and techniques
• Demonstrate methods of forming
Machines and Equipment
b. funnels c. cylindrical container
1-2
these shapes. 1.4 Calculate allowance for joint 3
• Calculate allowance for joint using • Lesson plan Chalkboard
using the formula: grooved seam = the formula: grooved seam = 11/2x 11/2x width of groover.
width of groover, panned down and knock-up joints.
3
1.5 Sketch the joint allowances on
• Sketch joint allowances on the
• Lesson plan Appropriate
the materials and notch the joints
materials and notch
Tools and equipment
34
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out, And Form Pojects In Sheet Metal Work: Week
4-5
Specific Learning Outcome
Teachers Activities
Resources
1.6 Make the following joints in
• Demonstrate the process of
• Lesson plan
sheet metal:
making the following joints:
• Appropriate Tools and
a. solid corner joint
• solid corner
b. grooved seam
• groove seam
joint
• panned down
c. panned down
• knock-up
Equipment
joint d. knocked up joint 6
1.7 Name common rivets used in
• List and explain types of rivets
Lesson plan Chalkboard
metal work and state their
used in sheet metal and their
Samples of rivets.
properties
properties
35
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective: 1.0 Apply Appropriate Workshop Processes, Techniques And Tools To Mark Out, And Form Pojects In Sheet Metal Work: Week
Specific Learning Outcome
Teachers Activities
1.8 State common faults in riveting • Explain common faults in riveting • Show the listed defect to student
e.g. 6
Resources • Lesson plan Charts/Posters
a. overlapping b. cracked rivet c. uneven ends, etc.
7
7
1.9 Drill and punch holes on joints
• Demonstrate drilling and punching • Lesson plan Appropriate
for riveting making sure that burrs,
of holes on sheet metal including
Tools, Machine and
are removed
removal of burrs.
Equipment
1.10 Rivet joints satisfactorily using • Demonstrate riveting by using
• Lesson plan
correct sets
Charts/Posters Various
appropriate rivet sets
Types of rivet Sets. General Objective 2.0: Solder and braze various sheet metal projects with maximum safety. Week
Specific Learning Outcome
Teachers Activities
Resources
2.1 Identify the types of solders
• List and identify types of solders
• Lesson plan Charts
used in sheet metal work and state • show various types of solders their compositions: e.g. 8
- tinman's solder,
used in sheet metal work and state their composition
grade - self-flux solder - resin-core solder, etc
36
Various Types of solders
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating finishing, either as part of the corporate production process or as an independent process Week
Specific Learning Outcome
Teachers Activities
Resources
3.1 State the meaning of the
• Explain the meaning of the terms
• Lesson plan Posters
following terms:
listed in 3.1 (a - p)
Chalkboard
a. edge-stiffening
• Give details note on the above.
• Finished sheet metal
b. beading
• Show samples to students
projects involving terms listed in 3,1 (a - p)
c. work hardening d. beating e. annealing f. hollowing 6
g. raising h. blocking i. planishing j. sand blasting k. picking l. lacquering m. galvanizing n. plating o. painting p. other items used 3.2 Calculate allowances for edge- • Solve problems involving stiffening which include:
11 - 12
• Lesson plan Charts
calculations of allowances for edge- Chalkboard
a. helming
stiffening using the formula for
b. wiring, using the
wiring allowance: 2D+4T (where D
formula for wiring
is the diameter of wire and T is
allowance: 2D + 4T
thickness of metal
(where D is the diameter of wire and T is the thickness of metal)
37
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating finishing, either as part of the corporate production process or as an independent process Week
Specific Learning Outcome
Teachers Activities
Resources
3.3 Mark out for edge-stiffening
• Ask students to demonstrate the
• Lesson plan Appropriate
using the calculated allowance
marking out for edge-stiffening
Tools and Equipment
3.4 Produce projects involving
• Ask students to demonstrate
• Lesson plan Appropriate
edge-stiffening such as:
projects involving edge-stiffening
Tools and Equipment
a. beading
after sample demonstration.
• Lesson plan Chalkboard
b. swaging
• Explain the mechanical properties • Lesson plan Appropriate
Year 3 3.5 Know the mechanical properties of materials used in beating sheet Term 2 of the following materials used in 1-2
beating metal work:
Tools and Materials
metal work • Ask students to demonstrate the
a. brass
development of discs for making
b. copper
bowls using workshop method
c. aluminium d. low carbon steel 3.6 Develop discs for making bowls using workshop method
3-4
3.7 Describe the processes of
• Ask students to explain the
• Lesson plan, Chalkboard
raising, sinking, hollowing,
process of raising, sinking,
Posters.
planishing and polishing sheet
hollowing planishing and polishing
• Lesson plan Chalkboard
metal work in copper or brass.
sheet metal work in copper or
Compasses Dividers, etc.
3.8 Estimate size of blank for
brass.
• Lesson plan Chalkboard
raising and polishing sheet metal
• Ask students to draw the size of
Dividers Scribers, etc
work in copper or brass.
blank for raising and polishing sheet
3.9 Layout and cut out blanks for
metal work in copper or brass
raising, sinking or hollowing
• Ask students to demonstrate the
process.
laying out and cutting out blanks for raising, sinking or hollowing
38
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating finishing, either as part of the corporate production process or as an independent process Week
Specific Learning Outcome
Teachers Activities
3.10 Select appropriate tools and equipment and apply • Demonstrate and
• Lesson plan
correct procedures to produce to specification by
explain process of
• Chalkboard
raising, sinking or hollowing, given metal forming job.
producing bowls by
• Lesson plan,
Note: Sheet metal forming procedures should involve: raising, hollowing and
Chalkboard
a. blank size estimation
blocking using necessary Appropriate Tools
b. blank preparation
tools.
c. heat treatment (annealing)
• list the safety precaution. Such as wheeling
d. application of appropriate forming
• Give student
machine,
process
project/assignment to
planishing harmer,
e. cleaning
produce bowl.
dollies dent eraser
f. polishing; and
• Explain and demonstrate etc.
g. edge trueing
removal of dents from
• Lesson plan,
metal surface.
Appropriate Tools
3.11 Produce bowls by the following process:
3-7
Resources
and Equipment
a. raising, using oval head wooden
• Give student assignment and Equipment.
mallet and repeated beating and
on dent removal
annealing;
• Ask students to
b. hollowing, using a hollowed pipe or
demonstrate removal of
cylinder, hollowing hammer and a
dents using appropriate
bossing mallet
tools and equipment
c. blocking, using wooden block, bossing mallet and blocking hammer. Note: Safety precautions should be emphasized in the processes 3.12 Remove dents from metal surfaces using the following tools: a. wheeling machine b. dent eraser c. planishing hammer and dollies Note: Metal surfaces to be worked on include: bowls, car fenders, metal boxes and other containers.
39
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective 3.0: Produce finished sheet metal projects involving edge stiffening, beating finishing, either as part of the corporate production process or as an independent process Week
8-9
Specific Learning Outcome
Teachers Activities
Resources
3.13 Prepare surfaces for finishing
• Ask students to demonstrate
• Lesson plan, Related
by applying the following
preparation of surfaces for finishing Tools and Equipment.
processes:
using appropriate tools and
• Lesson plan Related
a. sand blasting the
equipment.
Tools and Equipment
surface
• Ask students to demonstrate
b. pickling with acid
finishing of sheet metal project by:
c. sanding
i. laquiring
3.14 Finish sheet metal projects by
ii. galvanizing
using the following techniques:
iii. plating
a. lacquering
iv. painting etc.
b. galvanizing c. plating d. painting
40
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 11
Contact Hours: 18 per week- L6: P12
Course Specification: Practical/theoretical content General Objective 4.0: Draw, develop and produce templates for the production of projects Week
10 - 12
Specific Learning Outcome
Teachers Activities
Resources
4.1 State materials used for templates
• Explain materials used for
• Lesson plan
a. Wood
making templates
Chalkboard related
b. Cardboard, etc
• Demonstrate the production Materials
4.2 Produce and read blue-prints (which
and reading of blue-prints of
• Lesson plan
include working drawings) of sheet metal
sheet metal projects
chalkboard Charts
projects
• Develop templates using the Appropriate Tools and
4.3 Develop templates by using the
methords listed for indicated
Equipment
following methods for the indicated items:
items in 4.3 (a - e)
• Lesson plan
a. Parallel line method - for
• Ask students to produce
Chalkboard Instrument
elbows and T-pieces,
various sheet metal project
• Lesson plan Related
square and rectangular
using templates methods
Tools, Equipment and
trays etc.
• Ask students to demonstrate Materials
b. Radial line method - for
the production of various
• Lesson plan
right cone, oblique cone,
sheet metal projects
• Tool, Equipment and
etc
• Test and evaluate the
materials
c. Triangulation method -
trainee in production
for transition piece and
processes
ductings. d. Cutting plane method for inclined plane, branch 'T' pieces. e. Development of complicated irregular shape. 4.4 Produce various sheet metal items, e.g. ductings to central air-conditioning systems, buckets for water, drawer cabinets (furniture), etc. 4.5 Produce at least two project in sheet metal work
41
Gas Welding and cutting Programme:
National Technical Certificate in Fabrication AND Welding Engineering Craft Practice
Module:
CFW 12 Gas Welding and Cutting
Prerequisite
CFW 11
Duration
18 hours/Week 6 theory, 12 Practical
Goal:
This module is designed to equip the trainee with the knowledge, attitude and skills to carry out gas welding and cutting jobs on all types of metals
General Objectives: 1. Understand and apply the general safety precautions related to gas welding 2. Know and apply successfully various gas welding processes/operations including the acetylene and oxy-fuel gas cutting processes. 3. Know and weld together different types of non-ferrous and ferrous metals 4. Understand the process of building up worn metallic shafts or surfaces 5. Understand and apply the fuel gas cutting process in cutting metals to given specifications 6. Know the various welding defects and rectify them Practical Competence On completion of this module, the student will be able to: 1. Apply general safety precaution 2. perform various gas welding operations 3. Weld together different types of ferrous and non-ferrous metals 4. Build up worn shaft or surfaces 5. Apply fuel gas cutting process in cutting metals to given specification 6. Identify and rectify various welding defects
42
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective: 1.0 Understand and apply the general safety precautions related to gas welding WEEK
Year 3
Specific Learning Outcome
Teachers Activities
Resources
1.1 Carry, transport and store full and
• Explain how to carry
• Lesson plan Charts
empty gas cylinders safety using
transport and store full and
or Posters and
appropriate equipment
empty gas cylinders
appropriate equipment
Term 1
• Explain how to carry,
1
transport and store full and empty gas cylinder safety using appropriate equipment
2
1.2 Apply appropriate safety precautions
• List and explain safety
• Lesson plan Charts
while carrying out the following:
precautions involved in gas
etc.
a. Gas welding operations
welding operations
on containers which have
• List and explain the use of
been emptied of chemicals,
protective wears for carrying
inflammable or explosive
out gas welding operations
liquids.
• Ask students to demonstrate
b. Gas welding near
appropriate safety precaution
containers with inflammable
while carrying out items 1.2 (a-
materials, e.g. petrol tank;
c)
and c. Gas welding in confined spaces.
3
1.3 Select, use and care for protective
• Ask students to identify the
• Chalkboard, Lesson
wears for carrying out gas welding
use and care for protective
plan and Protective
operations. E.g.
wears for carrying out gas
wears
a. welding goggles
welding operations e.g.
b. welding shields
welding goggles, welding
c. gloves
shield, globes and boots etc.
d. boots etc.
43
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 2.0: Know and apply successfully various gas welding processes/operations including the acetylene and oxy-fuel gas cutting processes. WEEK
Specific Learning Outcome
Teachers Activities
Resources
2.1 Identify the following gas welding
• Show the students items
• Chalkboard and
equipment, describing their features, functions, listed in 2.1
Lesson plan
• Identify and explain the
• Chalkboard,
a. generators
features and functions and
Lesson plan,
b. regulators
applications listed in 2.1
sketches/Charts
c. blow pipes
• Explain the difference
• Chalkboard
d. nozzles
between the two types of
Lesson plans
e. hoses
generators stating advantages leveled drawings.
f. gas cylinders and their
and disadvantages
• Lesson plan, low
colours
• Explain the main part of
and high pressure
g. economizers
generator
gas welding sets.
h. check valves
e.g. hydraulic back pressure
• Lesson plan,
applications and care:
2.2 Differentiate between the following types of valves, purifiers, carbide trays Chalkboard and 4
generators, stating their merits and demerits
etc.
calcium carbide
a. water-to-carbide generator
• State the difference between • Lesson plan,
5
b. carbide-to-carbide
low and high pressure
calcium carbide
6
generator
systems of gas welding
motor and generator
2.3 Identify the main parts of the generator
• Explain the composition of
• Lesson plan
e.g. hydraulic back pressure valve purifiers,
calcium carbide
Chalkboard and
carbide trays etc.
• Demonstrate how to
different types of
2.4 Distinguish between high and low pressure generate acetylene using
welding rods.
systems of welding
calcium carbide
• Lesson plan,
2.5 State the composition of calcium carbide
• Show and explain the types
chalkboard Welding
2.6 Generate acetylene using calcium carbide of welding rods to students guiding against danger of over-charge
stating their properties,
2.7 Identify types of welding rods stating their
composition and uses.
properties, compositions, and uses.
• With the aid of torches
2.8 Differentiate between welding and cutting
explain the difference between
torches
welding and cutting torches.
44
and Cutting torches.
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT
7 8 9 10
2.9 Identify the following flames and describe how they are derived in the oxy-acetylene welding processes: a. oxidizing flame b. carbonizing flame c. neutral flame 2.10 state the instances of the application/uses of the type of flames named in 2.9 above 2.11 Light the welding torch and adjust the flame to each of the types named in 2.9 above 2.12 Prepare plate surfaces and run beads: a. without filler rods b. with filler rods 2.13 Make neat labeled sketches indicating the conventional symbols for the welder joints. E.g.: a. butt joint b. fillet joint c. lap joint 2.14 Prepare plate surfaces for the following welding joints and tack weld: a. butt joint b. fillet joint c. lap joint 2.15 Weld metals together in downhand or flat position 2.16 State the functions of backing bars and strips 2.17 Apply backing bars and strips according to instructions on the side of a weld to control penetration.
• Explain the three types of flame in gas welding:- oxidizing, carbonizing and neutral • Describe uses of the types of flame named in 2.9 above • Demonstrate the lighting and setting up of the flames named in 2.9 above • Demonstrate plate surface preparation for running beds, with and without filler rods • Draw neat labeled sketches showing the conventional symbols for welded joints: i. butt ii. fillet iii. lap. etc • demonstrate running of beads with and without filler rods on plate surfaces • show students sketches of weld joints listed in 2.13 • give students detailed notes on the above and work to practice • Demonstrate tack welding and joints listed in 2.1 • Explain the preparation of plate surfaces for i. butt ii. fillet and iii. lap joints • Set up and tack weld the prepared pieces • Give detailed notes • Ask students to demonstrate how to weld metal together in down-hand or flat position • Explain the function of backing bars and strips • Demonstrate the use of backing bars and strips for controlling penetration.
45
• Lesson plan, chalkboard, Sketches/charts. - do - do • Lesson pla, plates and related equipment/tools • Lesson plan, Sketches/charts and Chalkboard • Lesson plan, materials and appropriate tools and equipment • Sample of weld jionts
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals WEEK
Specific Learning Outcome
Teachers Activities Resources
11 12
3.1 Identify the following types of non-ferrous and ferrous metals Non-ferrous a. copper b. aluminium c. brass d. bronze e. tin f. zinc g. lead h. iconel and monel Ferrous a. wrought iron b. mild steel c. stainless steel d. cast iron And state their composition 3.2 Describe the general characteristics of materials used in fabrication engineering including simple consideration of physical properties such as: a. strength b. ductility c. malleability d. hardness e. tenacity f. fusion g. distortion h. toughness and resistance to impact in relation to uses and common manufacturing processes, and weldability of materials. 3.3 State the common fabrication engineering uses of cast iron, mild steel, high yield steel, cast steel, austenite stainless steel, copper and common copper alloys, aluminium and common aluminium alloys, common forms or supply and the general limitations of cast forms. 3.4 State the properties and composition of fluxes used for welding non-ferrous metals
• Show students samples of metals listed in 3.1 • Explain the different types of non-ferrous and ferrous metals and their composition, as listed in 3.1 • Explain the characteristics listed in 3.2 • Ask students to explain the general characteristic of metal s used fabrication with particular reference to mechanical and physical properties in items 3.2 (a - h) • List and explain the properties and composition of fluxes used for welding non ferrous metals • Explain the properties and composition of fluxes used for ferrous and nonferrous metals
46
• Lesson plan, Chalkboard Samples Ferrous and Non-ferrous Metals listed in 3.1 • Lesson plan, Chalkboard and Charts • Fabricated samples of items listed in 3.3
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals WEEK
Specific Learning Outcome
Teachers Activities
Resources
3.5 Enumerate two functions of
• Explain two function of fluxes used in • Lesson plan,
fluxes in the welding of non-ferrous
the welding of ferrous and non-ferrous Charts, Appropriate
metals
metals using appropriate fluxes
Tools and
3.6 Prepare and weld non-ferrous
• Demonstrate the welding of ferrous
Equipment
metals using appropriate fluxes.
and non-ferrous metals using
• Lesson plan,
3.7 Identify cast-iron in terms of:
appropriate fluxes
Chalkboard and
a. types
• Show students the different types of Sample of Cast
b. its composition
cast iron
Irons
c. its properties
• Explain their composition and
• Lesson plan,
properties
Charts, Pieces of
3.8 Prepare cast-iron for welding by: • Demonstrate preparation of cast iron Cast iron, Related
Year 3 Term 2 1-2 3
a. chamfering or
for welding
Tools and
beveling of edges to
• Demonstrate the fusion welding of
Equipment
specification
cast iron components
b. pre-heating to
• Explain the composition of suitable
• Lesson plan,
specification
flux for bronze welding
Chalkboard
• Demonstrate preparation of bronze
• Lesson plan,
3.9 Fusion weld cast iron
components for welding, avoiding
chalkboard bronze
components
sharp edges
related tools and
3.10 Identify suitable flux for bronze
• Demonstrate the welding of bronze
equipment
welding and state its composition
to specification
• Lesson plan,
3.11 Prepare bronze to specifications • Ask the student to demonstrate
- do -
charts, Pieces of Bronze, Related
3.12 Weld bronze to specifications
above
3.13 State reasons for post-heating
• Explain the purpose for post-heating Tools and
bronze welds
bronze welds
Equipment.
3.14 Identify and state the type,
• Explain and state the types of
• Lesson plan
composition and properties of
composition and properties of
Chalkboard
common stainless steels used in
common stainless steels
metal work.
• Demonstrate the preparation of
• Lesson plan,
3.15 Prepare stainless steel
stainless steel components for
Chalkboard
components for welding
welding
Stainless Steel,
• Ask students to practice above
Tools and
- do -
Equipment
47
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 3.0: Know and weld together different types of non-ferrous and ferrous metals WEEK
Specific Learning Outcome
Teachers Activities
Resources
3.16 Weld stainless steel using appropriate • Demonstrate the welding of • Lesson plan, Charts welding rods and techniques and observing stainless steel using
4-6
Pieces of Stainless
safety practice.
appropriate welding rods and Steel, related Tools
3.17 Apply appropriate treatment to the
observing safety practices
welded joint e.g. washing in soapy water,
• Demonstrate the appropriate • Soapy cold water,
brushing off lux residue, etc. to avoid weld
treatment to the welded joint
Worm Water Wire
decay
to avoid weld decay
brushes
3.18 Explain the effect of welding together
• State the effects of welding
• Lesson plan,
two different metals
together two different metals
Chalkboard and
3.19 Identify dis-similar metals such as:
• Explain dissimilar metal
sketches/Charts
a. copper and brass
listed in 3.19 (a-c)
• Lesson plan
b. steel and cast-iron
• Describe the effect of
Chalkboard
c. aluminium and steel, etc
dilusion in welding
- do -
3.20 State the effect of dilusion in welding
• State the principles of the
- do -
3.21 Explain the principles of the following
following welding process in
• Lesson plan,
welding processes:
3.21 (a-d) giving examples
materials tools and
and Equipment
a. cladding
• Demonstrate the welding of equipment.
b. stelliting
dissimilar metals observing
c. hard surfacing
correct techniques and safety
d. brazing
practices
3.22 Prepare and weld dis-similar metals
• Give detailed notes on all of
using correct techniques and observing the the above correct safety practice.
• Students should be asked to carryout projects involving all of the above
48
• Sample of metals
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 4.0: Understand the process of building up worn metallic shafts or surfaces WEEK
Specific Learning Outcome
Teachers Activities
Resources
4.1 Identify the composition of given worn
• Explain the composition of
• Lesson plan,
metallic shafts or other worn metallic
given worn metallic shaft or
Chalkboard, Worn out
objects
objects
Metallic Part or Shaft
4.2 Discuss the properties of the metal used • Describe the properties of 7
- do -
for given worn metallic shafts or other
the metal used for given worn • Lesson plan and
objects
metallic shaft or other objects Appropriate materials,
4.3 Build up given worn metallic surfaces to • Demonstrate how to built up related tool and specifications using suitable filler rods and
worn metallic surfaces to
applying the correct technique/sequence of specification, using suitable operation
techniques and filler rods
49
equipment
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: GAS WELDING AND CUTTING
Course Code: CFW 12
Contact Hours: 18 per/week 6 Tutorials 12 practicals
Course Specification: THEORETICAL CONTENT General Objective 5.0: Know the various welding defects and rectify them WEEK
8 9 10 - 12
Specific Learning Outcome
Teachers Activities
Resources
5.1 Describe the following defects in gas welded joints: a. undercut b. lack of fusion (side, root, inter-run) c. porosity d. slag inclusion e. unequal leg length (uneven alignment) f. lack of reinforcement 5.2 State how the weld defects in (5.1) above can be avoided in oxy-acetylene welding 5.3 Beware of the following test to detect defect in welded joint a. Non-destructive test such as visual inspection, x-ray test, gamma ray test, ultrasonic tests 5.4 Apply the following tests to detect defects in welded joints: a. Destructive test such as bend test, macro and micro examination sulphur prints, mick and tee fillet test 5.5 Rectify welded joints defects enumerated in 5.1 above 5.6 Produce project involving the fabrication of: a. General safety precaution b. Ferrous and non-ferrous metal welding c. Various joints defect and their rectification
• List and identify various
• Lesson plan
welding defects to students
Chalkboard
• Explain the defects in gas
Sketches/charts
welded joint as listed in 5.1 (i- • Lesson plan, vi)
Chalkboard,
• Give detailed notes on all of
Sketches/Charts
the above
• Lesson plan
• Explain how the weld defects • Films in (5.1) above can be avoided • Video taper in oxy-acetylene welding
• Industrial
• Explain the use of test to
visit/execution etc.
detect defect in welded joint a • Lesson plan, Test non-destructive test
piece Related Tools
• Give detailed notes
and Equipment
• Explain and Demonstrate
• do -
how to use of test to detect
• Lesson plan
defects in welded joints:
• Tools, equipment
destructive and non-
and materials
destructive test • Ask students to demonstrate correction of welding defects enumerated in (5.1) above • Test and evaluate the students in production process
Week 13 Examination - Practical 60%, Theory 40%
50
Metal Arc Welding Programme:
National Technical Certificate in Fabrication AND Welding Engineering Craft Practice
Module:
CFW 13 Metal Arc Welding
Prerequisite
CFW 12
Duration
18 hours/Week 6 theory, 12 Practical
Goal:
This module is designed to equip the trainee with the knowledge, attitude and skills to carry out Metal arc welding job involving various ferrous and non ferrous metals in positions
General Objectives: 1. Understand And Apply Safety Precautions Related To Metal Arc Welding 2. Understand the construction, features and working principles of arc welding machines and accessories 3. Make different types of welded joints in all positions 4. Know the properties of various types of ferrous and non-ferrous metals and weld them together 5. Build up worn metallic shafts; air surfaces using metal arc welding 6. Cut Metals to various specifications using metal Arc Cutting process 7. Know various welding defects and rectify them Practical Competence On completion of this module, the student will be able to: 1. Apply general safety precaution related to arc welding 2. Use the Arc welding machine in fabricating simple engineering projects involving different types of joints and position involving different welding techniques 3. cut metals to various specification using metal arc cutting processes 4. identify and rectify various welding defects
51
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 1.0: Understand And Apply Safety Precautions Related To Metal Arc Welding Week
Specific Learning Outcome
Teachers Activities
1.1 List and explain the hazards related to • Explain the hazard related to metal arc welding, e.g.
Resources • Lesson plan
metal arc welding as listed in 1.1 • Chalkboard and
Year 3
a. arc eye
• Discuss how these listed
Term 2
b. burning
hazards can be avoided
1
c. radiation
• Give detailed notes
Charts
d. electric shock e. toxic fumes, etc
2
- do -
1.2 Select, use and care for protective
• List and Describe the use and
wears required while carrying out metal
care for protective wears while
arc welding operations, e.g.
metal arc welding as listed in 1.2 • chalkboard, charts
a. head and hand shield
• Show these items to students
b. hand gloves
and give detailed notes
• items listed in 2.1
c. apron d. spats e. boots and leggings, etc.
3
1.3 Apply appropriate safety precautions
• Discus Safety precautions while • Lesson plan Arc
while carrying out:
carrying out a - c
a. arc welding in confined
• Ask students to demonstrate the
spaces
appropriate safety precaution
b. arc welding empty
while carrying out arc welding as
vessels or drums that had
listed in 1.3
contained inflammable or toxic materials c. arc welding near inflammable materials
52
Welding Equipment
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 2.0: Understand the construction, features and working principles of arc welding machines and accessories Week
Specific Learning Outcome
Teachers Activities
2.1 Differentiate between A.C and D.C arc Show students the different
4 5
Resources 6. Chalkboard Lesson
welding machine
features in the construction of the plan Arc Welding
2.2 Know the working principles of a.c.
arc welding machine
Equipment
and d.c. welding machines
Explain the differences between
7. Lesson plan
2.3 List and state the functions of the
a.c. and d.c. arc welding
Chalkboard Chart
welding accessories, e.g.
machines
• Chalkboard Arc
1. welding load
State the working principles of
Welding Accessories
2. earth load
a.c. and d.c. welding machines
etc.
3. electrode holder
• Explain the function of welding
• Chalkboard Lesson
4. chipping hammer
accessories as listed in 2.3
plan ac/dc welding
5. wire brush, etc.
• Show students these items
machine etc.
2.4 Know the advantages and
• List and explain the advantages
- do -
disadvantages of a.c. and d.c. welding
and disadvantages of a.c. and
- do -
systems
d.c. welding machines
2.5 set and use the a.c. and d.c. welding
• Demonstrate the use of a.c. d.c.
machines for specified voltage/amperage welding machines for specified operation, observing safety precaution
voltage and amperage observing
2.6 Explain the following processes of
safety precautions
electrode manufacture:
• Describe the processes of
a. solid extrusion process
electrode manufacturing as listed
b. extruded with re-
in 2.6
enforcing coating c. dipped process
53
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 2.0: Understand the construction, features and working principles of arc welding machines and accessories Week
Specific Learning Outcome
Teachers Activities
Resources
2.7 Describe with sketches the material
• Explain with sketches, material
• Lesson plan,
composition of different types of
composition of different types of
Chalkboard
electrodes
electrode
Sketches/Charts
2.8 State the conventional electrode
• Explain the conventional
classification system
electrode classification system
• Lesson plan,
2.9 Select electrode materials according
• Explain the selection of
Appropriate Electrode
to parent system
electrode materials according to
etc.
2.10 State the basic methods of electrode parent metals 6
care, e.g. a. dry storage
- do -
• Electrode drying
• Explain the basic method of
oven, lesson plan etc.
electrode care with reference to
• Lesson plan,
b. oven storage
i. dry storage
Appropriate Arc
c. safe handling
ii. oven storage
Welding Equipment
iii. safe handling
and tools
2.11 Strike metal arc and maintain the arc
• Demonstrate how to strike and maintain the arc • Ask students to practice striking metal arc and maintaining the arc
7
2.12 Carry out with proficiency the
• Demonstrate with proficiency
• Lesson Plan,
following arc welding
the following arc welding
Welding Machine
techniques/operations:
techniques/operations:
Tools and
a. weaving
i. weaving
b. laying of multi-runs, etc.
ii. laying of multi-
Note: Safety regulations and requirements
runs etc
must be observed.
observing safety regulations as required
54
Accessories
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Make different types of welded joints in all positions Week
Specific Learning Outcome
9
Resources
3.1 Describe with sketches the application • Explain with sketches the
• Chalkboard,
of the following joints in metal fabrication: application of the following joints
Sketches/Charts
a. square butt
8
Teachers Activities
in metal fabrication:
lesson Plan
b. single vee
i. square butt
• Lesson plan
c. double vee
ii. single vee
Chalkboard
d. single U Fillet
iii. double vee
• Lesson plan and
e. open corner, etc.
iv. single U
Chalkboard
3.2 Know the factors that govern the
v. fillet and
• Lesson plan,
selection of joints to be used for a project
vi. open corner
Process of metals,
e.g.
etc
Appropriate Tools and
a. type of metal
• Describe the factors that govern Equipment
b. thickness of metal
the selection of joint to be used
c. shape of plate
for a project with reference to 3.2 Appropriate tools and
d. position of joint
(a-d)
3.3 Interpret the various arc welding
• Show and explain the various
symbols and conventions used in
arc welding symbols use in
engineering working drawings
engineering working drawing
3.4 Prepare edges for welding the
• Demonstrate preparation of
following joints:
edges for welding joints in 3.4 (e-
a. square butt
f)
b. single vee
• Give students projects that
c. double vee
require the joints listed in 3.4 (a-f)
d. single U
• Demonstrate welding of joint in
e. double U
3.4 above in flat position
f. open corner
observing necessary safety
3.5 Weld the prepared joints in (3.4)
precautions
above in flat positions observing
• Ask students to practice the
necessary safety precautions.
above
55
• Lesson plan Related Materials
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents 3.6 Prepare metal surfaces for: a. multi-run welds
11 - 12
surfaces for
Materials Welding machine
b. weaving welds
i. multi-run welds
Flat bars and other
3.7 Make multi-run welds
ii. weaving welds
related materials
3.8 Make weaving welds
• Demonstrate the making of
3.9 Weld joints in the following positions:
multi-run welds
a. vertical position
• Demonstrate making weaving
b. horizontal position
welds
c. overhead position
• Explain the welding of joint in
3.10 Weld pipes and flanges in various 10
Demonstrate preparation of metal
the following position:
fixed positions
i. vertical
3.11 Weld pipes and flanges in rotated
ii. horizontal and
position
iii. overhead
3.12 Weld pipes using the store pipe
• Discuss the welding pipes and
method
flanges in various fixed position • Demonstrate the welding of pipes and flanges in rotated positions • Demonstrate the welding of pipes using the store pipe methods • Give students projects involving the welding processes above
56
required for welding
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and weld them together Week
Specific Learning Outcome
Teachers Activities
4.1 Identify by inspection various types of • Explain by inspection various
Year 3 Term 3 1 2-3
Resources • Lesson plan,
ferrous metals. e.g. cast iron, steel, etc.
types of ferrous metals: cast iron, Chalkboard and
4.2 List four physical properties of cast
steel, stainless steel, etc
iron
• Discuss four physical properties Ferrous Metals
4.3 Know the behaviour of the following
of cast iron
• Lesson plan,
types of cast iron when welded:
• Describe the behaviour of the
Chalkboard
Various Type of
a. grey cast iron
following types of cast iron when • Samples of grey cast
b. white cast iron
welding as in 4.3 (a-c) above
iron, white cast iron,
c. malleable cast iron
• Explain the uses and
and malleable cast
4.4 State the use and carry out the
demonstrate the following
iron
following procedures:
procedures as in 4.4 (a-d).
• Lesson plan Welding
a. pre-heating
• Demonstrate the preparation of Equipment and
b. post-heating
cast iron pieces by chamfering
c. preing
and pre-heating and weld
d. fixed - -free - -end
satisfactorily as listed in 4.5 (a-d)
welding, etc. 4.5 Prepare cast iron pieces by chamfering and pre-heating, etc. and weld them satisfactorily, using the following techniques: a. fusion b. bronze c. studing d. buttering
57
Appropriate Tools.
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and weld them together Week
4
Specific Learning Outcome
Teachers Activities
Resources
4.6 Identify various types of non-ferrous
• State various types of non-
• Lesson plan
metals, e.g.
ferrous metals as in 4.6 (a-e)
Chalkboard Different
a. copper
• Show samples of the listed
Types of non-ferrous
b. aluminium
above to students
metal
4.7 Describe the composition and state
• Explain the composition and
• Lesson plan
the mechanical properties of the non-
state mechanical properties of
Chalkboard and
ferrous metals named in 4.6 above,
non-ferrous metals in 4.6 above
Charts.
mechanical properties to include:
as listed in 4.7
c. brass d. iconel e. monel
a. ductility 5
b. malleability c. hardness d. tenacity e. fusion f. fatigue g. effect of heat h. distortion
58
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and weld them together Week
6
Specific Learning Outcome
Teachers Activities
Resources
4.8 Select suitable electrodes and
• Explain the selection of suitable • Lesson plan
machines for welding various types of
electrode and mechanics for
Different sizes of
given non-ferrous metals
welding various type given non-
Electrode and
ferrous metals
Welding Machine
4.9 Outline appropriate heat treatment
• Discuss through demonstration, • Lesson plan
method for a finished welding of non-
the appropriate heat treatment
• Furnace
ferrous metal
method for finished weld of non
• Samples of non
ferrous metals
furnace
4.10 Weld the following non-ferrous
• Demonstrate the welding of non- • Lesson plan, welding
metals and apply the appropriate heat
ferrous metals and apply the
equipment and
treatment:
appropriate heat treatment
appropriate tools
a. copper
method as in 4.10 (a-e)
b. bronze c. aluminium d. brass e. iconelmonel
59
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: METAL ARC WELDING
Course Code: CFW 13
Contact Hours: 18 hrs per week - 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Know the properties of various types of ferrous and non-ferrous metals and weld them together Week
Specific Learning Outcome
Teachers Activities
Resources
General Objective 5.0: Build up worn metallic shafts; air surfaces using metal arc welding Week
Specific Learning Outcome
Teachers Activities
5.1 Identify the composition of given worn • Describe the composition of a metallic shafts or other worn metallic
given worn metal shafts or parts
parts. e.g. gear teeth that can be restored e.g. gear teeth that can be
7
Resources • Lesson plan Chalkboard, and Worn metal shaft and gear
by arc welding.
restored by arc welding
teeth
5.2 Discuss the properties of the given
• State the properties of given
• Lesson plan,
worn metallic parts to be restored by arc
worn metal parts to be restored
Welding Machine and
welding
by arc welding
Appropriate Tools and
5.3 Build-up given worn metallic parts to
• Demonstrate the building up of
Equipment
specification using appropriate techniques worn metal parts to specification, including controls against distortion
using appropriate techniques and control against distortion
General Objective 6.0: Cut Metals to various specifications using metal Arc Cutting process. Week
Specific Learning Outcome
Teachers Activities
Resources
6.1 Know the principles and application of • Explain the principles and
• Lesson plan
the following arc cutting methods in metal application of the following arc
Chalkboard
fabrication:
cutting methods in metal
Sketches/Charts
fabrication:
• Welding equipment
a. air arc method
8
b. carbon arc method
i. air arc method
c. oxy arc method
ii. carbon arc
and accessories
method and iii. oxy arc method 6.2 Identify arc cutting electrodes and
• Explain arc cutting electrode
• Lesson plan
state their compositions and uses
stating their composition and
chalkboard various
uses
arc cutting electrode
6.3 Cut metals with facility using the
• Demonstrate the cutting of
• Lesson plan Arc
different cutting methods named in 6.1
metals using the different cutting Cutting Electrode and
above.
method named in 6.1 above
60
Welding Equipment
General Objective 7.0: Know various welding defects and rectify them Week
9
Specific Learning Outcome
Teachers Activities
Resources
7.1 Describe major defects in arc welded
• Explain major defects in arc
• Lesson plan
joints including undercut; lack of fusion
welded joint as in 7.1
Chalkboard,
(side, root, inter-run); porosity; slag
• Show students samples of these Sketches/charts
inclusion (oxide entrenchment); unequal
defects
• Samples of defects
leg length (uneven alignment); and lack of • Give detailed notes reinforcement. 10
7.2 Know how the weld defects in 7.1
• Explain how weld defects in 7.1 • Lesson plan,
above can be avoided
above can be avoided.
Chalkboard
7.3 Apply the following tests to detect
• Demonstrate the application of
• Lesson plan,
defects in arc welded joints:
the following test to detect defects Chalkboard, Testing
a. non-destructive tests
in arc welded joints as shown in
such as visual inspection,
7.3 (a-b)
Apparatus
x-ray test, gamma, ray test, ultrasonic test, magnetic track detector penetrant;
11
b. destructive tests such as bend test, macro and micro examinations sulphur print, izod and fatigue 7.4 Rectify welded joint defects named 7.1 • Explain how to correct defects in above
welded joints named in 7.1 above
7.5 Produce project involving the
• Test, evaluate the students in
• Lesson plan
application of:
the production process
• Material, tool and equipment
a. General safety precaution b. Using both AC and DE 12
- Do -
machines c. Ferrous and nonferrous metals d. Different type of joints in all positions and defect etc Week 13 Examination - Practical 60%, Theory 40%
61
Structural Steel Work PROGRAMME:
National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE:
CFW 14- Structural Steel Work
DURATION:
18 Hours/week 6 Tutorial; 12 Practical
GOAL:
The Module is designed to provide the trainee with knowledge and skill to enable him produce simple finished structural steel work projects with safety
General Objectives: On completion of this module, the trainee should be able to: 1. Understand the safety rules as applicable to structural steel work 2. Use and Care for Tools and Equipment used in Structural Steel Work 3. Know the structural properties of materials used in structural steel work and make simple calculations related to their strength. 4. Produce simple structural steel projects on the shop floor 5. Understand the process of manufacture of iron and steel 6. Assemble simple structural steel components 7. Know the effect of corrosion on structural steel materials and apply protective coating against corrosion. Practical Competence On completion of this module, the student will be able to: 1. Comply with general safety related to structural steel work 2. Use tools and equipment correctly 3. Identify properties of structural steel working materials 4. Produce structural steel projects 5. Assemble structural steel components 6. Apply protective coating against corrosion
62
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 1.0 Understand the safety rules as applicable to structural steel work Week
Specific Learning Outcome
Teachers Activities
Resources
1.1 Select, use and care for the
• Explain the use and care for
• Lesson plan
following protective wears used in
protective wears used in
Chalkboard
structural steel work
• Posters
Year 3 structural steel work: Term 2
a. gloves
• Show students items listed in 11 • Related Protective
1
b. aprons
• Demonstrate how to take care
c. boots
of these items
d. goggles, etc
• Give detailed notes
Wears
1.2 Know safety rules for the following
• Explain the safety for operations • Lesson plan
operations in structural steel work:
in structural steel work and give
Chalkboard
detailed notes
• Posters
a. rules for storage of full and empty gas
• Necessary Tools and
cylinders
Equipment
b. rules for lifting of 2
structure c. rules for transporting of structures, etc. 1.3 Apply the safety rules in carrying out • Demonstrate the application of operations named in 1.2 above.
safety rules in carrying out operations mentioned in 1.2 above
63
- do -
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 2.0: Use and Care for Tools and Equipment used in Structural Steel Work Week
Specific Learning Outcome
Teachers Activities
2.1 Select and use common hand tools List common hand tools used in
Lesson plan,
structural steel work
Chalkboard Appropriate
a. hammers (assorted)
Explain their uses
Tools and Equipment
sheers
Show students these tools
b. spanners (assorted)
Give detailed notes
dog
Ask student to sketch these tools
used in structural steel work: e.g.
3
Resources
c. drills (assorted) dice d. punches dollies, etc e. chisels f. screw drivers g. pliers h. strips 2.2 Identify and use with facility the
• List and explain the use of
following power tools used in structural power tools used in structural steel work: e.g.
steel work
a. riveting hammer
• Show the student these tools
(assorted)
• Demonstrate using these tools
b. holder on
• Give detailed notes
c. impact wrenches d. grinder e. torque spanners f. straight edge etc.
64
• Lesson plan Appropriate Tools and Equipment
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 2.0: Use and Care for Tools and Equipment used in Structural Steel Work Week
Specific Learning Outcome
Teachers Activities
Resources
2.3 Identify, use and care for the
• List the equipment in 2.3
• Lesson plan
following structural steel working
• Explain the use of each
Chalkboard, charts
equipment: e.g.
• Explain the care of each
Appropriate Tools and
a. cranes (assorted)
equipment
Equipment
b. straightening
• Show the students each of
machine
these equipment physically where
c. circular sewing
available. If not show them the
machine
picture
d. loafty platform
• Ask student to produce diagram
4
e. cropper
of each equipment
5
f. shearing machine
• Give detailed notes
g. punching machines h. drilling machine i. guillotine j. bending machine k. rolling machine l. brake pens m. tape, twine and chalk n. trammel 2.4 Maintain tools, machines and
• Demonstrate how to maintain
equipment used in structural steel work tools, machine and equipment used in structural steel work
e.g. by: 6
• Lesson plan Appropriate Tools, Equipment and
a. cleaning
Materials
b. oiling
• Oil and grease cans.
c. greasing
• Grinding machine
d. regrinding, etc
65
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Know the structural properties of materials used in structural steel work and make simple calculations related to their strength. Week
Specific Learning Outcome
Teachers Activities
3.1 Describe with sketches the following • Sketch and explain forms of
• Lesson plan,
structural steel materials
Chalkboard,
a. plates (various
• Give detailed notes on each of
Posters/Charts.
thicknesses)
the equipments
• Samples of equipment
b. universal channel
• Asked students to sketch these where available
c. universal beams
equipment
forms of structural steel materials e.g.
d. rolled steel joist e. T-bar f. Angle bar g. Check plates (assorted) 7
Resources
h. Bridge beams, etc. 3.1 Describe with sketches the following forms of structural steel materials: i. e.g. plates (various thicknesses) j. universal channel k. universal beams l. rolled steel joist m. T-bar n. Angle bar o. Check plates (assorted) p. Bridge beams, etc.
66
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Know the structural properties of materials used in structural steel work and make simple calculations related to their strength. Week
8
Specific Learning Outcome
Teachers Activities
Resources
3.2 Intepret conventional symbols and
• Ask students to sketch and
• Lesson plan
abbreviations used for representing
explain conventional symbols and Chalkboard Charts.
structural steel sections
abbreviations used in
• Lesson plan
3.3 Apply standard specifications, e.g.
representing structural steel
Chalkboard, Charts
Nigerian standard (where available) -
section
• Lesson plan
American or British standards to
• Explain and apply standard
Chalkboard
structural steel work design.
specifications used in structural
• Lesson plan
3.4 State the use and limitations of the
steel work design
Chalkboard
structural steel materials named in 3.1
• Explain the use and limitations
above
of the structural steel materials in
3.5 Apply Hooke's Law in the design of 3.1 given simple structural elements.
• Explain and apply Hooke's Law in the design of simple structural elements
3.6 Distinguish between the following
• Explain and state the
• Lesson plan
stresses in structural steel-work:
differences of stresses in
Chalkboard Charts
a. tensile stress
structural steel work
b. compressive stress c. shear stress
9
3.7 Know simple calculations involving
• Explain simple calculations
• Lesson plan
practical applications of tensile,
involving practical application of
Chalkboard
compressive and shear stresses, e.g. in stresses in riveted joint, welded riveted and welded joints
joints etc. • Give student some problems to solve
3.8 Read structural steel work drawing
• Draw and interpret structural
• Lesson plan
and sketch simple structural steel work steel work drawing and sketches Chalkboard Sample details.
of simple structural steel work details
67
drawings and sketches
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Produce simple structural steel projects on the shop floor Week
Specific Learning Outcome
Teachers Activities
Resources
4.1 Calculate allowances for forming
• Explain calculations of
• Lesson plan
thick metal or angle bar rings using the allowances for forming thick metal Chalkboard sketches 10
11
12
following methods:
or angle bar rings using meanline
a. meanline method
and neutral line method
b. neutral line method
• Solve some problems
4.2 Produce simple projects in structural • Give students projects to
• Lesson plan
steel work e.g. stanchion bar plate rafter demonstrate the production of
Appropriate tools
hunches, etc.
simple projects in structural steel equipment and work
materials
4.3 Develop templates with regular
• Demonstrate how to develop
• Lesson plan Drawing
surfaces
templates with regular surfaces
instruments
4.4 cut out templates from the following • Demonstrate how to cut Year 3
materials:
Term 3 1
• Lesson plan
templates from various materials Appropriate Materials
a. wood
• Ask student to cut out template
b. cardboard
on wood, cardboard etc
Tools and Equipment
c. any other suitable materials 4.5 Reproduce simple jobs on structural • Give student Project to
2
• Lesson plan
steel materials using templates cut in
demonstrate how to reproduce
Appropriate Materials
4.4 above
simple jobs on structural steel
Tools and Equipment
materials using templates in 4.4 above 4.6 sketch and produce simple working • Demonstrate how to sketch and • Lesson plan 3
jigs, e.g. jig for mass production of
produce simple working jigs.
Appropriate Tools and
stanchions, rafters, etc., on the shop
• Ask students to do the same
Equipment.
floor
68
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 5.0: Understand the process of manufacture of iron and steel Week
Specific Learning Outcome
Teachers Activities
Resources
5.1 Sketch a blast furnace and describe • Sketch and label a blast furnace • Lesson plan its working principles
and explain the working principles Chalkboard • Note: Student should visit
Posters/Chart Industrial
industry/factory to see a typical
Visit
blast furnace. • Students are asked to sketch and label blast furnace 5.2 Give the name of fuel and state the • Ask students to state the type of Lesson plan 4
composition of charge used in blast
fuel and the composition of
furnace
charge used in blast furnace
5.3 Explain the working principles of
• Ask students to state the
Bessemer process with the aid of a
working principles of a Bessemer
sketch
process with the aid of a sketch.
chalkboard, charts - do -
• Students are asked to sketch Bessemer converter 5.4 Outline the characteristics of pig
• List the characteristics of pig
iron, cast iron and low carbon steel
iron, cast iron and low carbon steel
69
- Charts
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 6.0: Assemble simple structural steel components Week
Specific Learning Outcome
Teachers Activities
Resources
6.1 Know the uses of fixtures and bolts • Explain the uses of fixtures and • Lesson plan in the assembly of structural
bolts in the assembly of structural Chalkboard, bolts and
components
components
fixtures
• Give detailed notes • Lesson plan
6.2 Assemble simple structural 5
components such as rafter bracing,
• Demonstrate how to assemble
simple canopy simple roof trusses, etc. simple structural components, Note: Assembly should
using bolts, rivets and welding
involve basic jointing
operation
operations, e.g. bolting,
• Show samples of some of these
riveting and welding
assemblies
Appropriate Tools and Equipment
General Objective 7.0: Know the effect of corrosion on structural steel materials and apply protective coating against corrosion. Week
6
7
Specific Learning Outcome
Teachers Activities
Resources
7.1 Name some common causes of
Ask students to list some
Lesson plan Chalkboard
corrosion on steel e.g.
common causes of corrosion on
Sample of corroded
a. atmospheric
steel
steel
b. chemical such as
Show student samples of
electrolytic action.etc
corroded steel.
7.2 Describe the effect of corrosion on
• Ask students to explain the
structural steel, e.g.
effects of corrosion on structural
a. weakening of
- do -
steel
structure b. defacing of steel 8
7.3 Know the purposes for applying
• Explain the purposes for
undercoat to structural steel
applying undercoat to structural
components
steel components
70
- do -
PROGRAMME: NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 14
Contact Hours: 18 hrs per week 6 tutorials; 12 practicals
Course Specification: Theoretical/Practical contents General Objective 7.0: Know the effect of corrosion on structural steel materials and apply protective coating against corrosion. Week
9
Specific Learning Outcome
Teachers Activities
7.4 Prepare the surfaces of structural
• Demonstrate how to prepare the • Lesson plan
steel components for finishing with the
surface of structural steel
Appropriate Tools and
following methods:
components for finishing
Equipment
b. brushing
• Ask the student to perform the
c. de-greasing
operation above
Resources
d. de-scaling 7.5 State the composition of common 10
• List and explain the composition • Lesson plan
undercoat used for structural steel work of common undercoat used for structural steel work.
Chalkboard, Charts, and samples of under coat
11
7.6 Apply suitable undercoat to
• Demonstrate the application of
• Lesson plan
structural steel components. E.g. red
suitable undercoat to structural
Appropriate Tools and
oxide, metalization
steel components and observe
Equipment
Note: Observe safety precautions in the safety precautions. use of the undercoats. 12
7.7 Produce project involving the
• Test, evaluate the student in the • Lesson plan
application of safety rules in structural
process of the production
steel work
• Material, tool and equipment
Week 13 Examination - Practical 60%, Theory 40%
71
Advanced National Technical Certificate Welding PROGRAMME:
Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE:
CFW 21-Welding
DURATION:
15 Hours/week 4 Tutorial; 11 Practical
GOAL:
The Module is designed to equip the trainee with advanced skills and knowledge required to carry out gas shielded arc and ancillary welding process with proficiency
General Objectives: 1. Understand and Apply the general safety precautions related to gas shielded arc and ancillary welding processes 2. Understand the constructional features and the working principles of TIG and MIG welding machines and accessories 3. Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts 4. Apply appropriate workshop processes and techniques to mark out and form projects for welding 5. Make different types of welded joints in all positions 6. Understand and apply the fuel-gas cutting process in cutting metals to given specification. Practical Competence On completion of this module, the student will be able to: 7. Comply with general safety related to gas shielded arc and ancillary welding process 8. Apply basic principles and techniques of TIG and MIG welding in fabricating simple machine component parts 9. Use workshop process techniques and tools to mark out and form projects in welding 10. perform welding operations in all position involving different types of joints
72
11. Cut metals to given specification using the fuel gas cutting process PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 1.0: Understand and Apply the general safety precautions related to gas shielded arc and ancillary welding processes Week Specific Learning Outcome
Teachers Activities
Resources
1.1 Know the importance of a safe working • Explain the importance of a • Welding tools, lesson environment with particular reference to
safe working environment
plan chalkboard goggle
personal safety, and the student's
with respect to safety to self
and appropriate
responsibility to others.
and others as per 1.1 (a-d)
equipment
a. State the reasons for the use of face protection and the wearing of protective clothing. b. Describe the dangers inherent in the following: grinding, oxy-acetylene 1
welding, metal arc welding, shearing, bending, folding, compressed air, lifting tackle. c. State the correct methods for handling, storing and using compressed gas cylinders. d. State the dangers of electric shock and describe user precautions.
73
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 1.0: Understand and Apply the general safety precautions related to gas shielded arc and ancillary welding processes Week Specific Learning Outcome
Teachers Activities
Resources
1.2 List and explain the hazards related to • Describe the hazard related • Lesson plan gas shielded arc welding. e.g. a. arc eye
to gas shielded arc welding
• Chalkboard. And chart
as listed in 1.2 (a-e)
b. burning c. radiation d. electric shock e. toxic fumes, etc. 1.3 Select, use and care for the protective • Explain the use and care for • Lesson plan and wears used in gas shielded arc welding
the protective wears used in
operations: e.g.
gas shielded arc welding
a. head and pan shields
operations as in 1.3 (a-e)
b. hand gloves
• Show students items listed
c. apron
in 1.3 (a-e)
d. spats
• Ask student to sketch the
e. boots, etc.
items
protective wears
1.4 Apply with facility, appropriate safety
• Demonstrate with facilities
• Lesson plan and
precautions required in carrying out TIG
appropriate safety
protective wears
and MIG welding operations:
precautions required in
• Welding Equipment
a. in confined spaces
carrying out TIG and MIG
b. on empty vessels or
welding operation as listed in
drums that had contained
1.4 (a-c)
inflammable or toxic materials near inflammable materials, e.g. petrol tanker, etc
74
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 2.0: Understand the constructional features and the working principles of TIG and MIG welding machines and accessories Week Specific Learning Outcome
Teachers Activities
2.1 Explain the constructional features and a. State the constructional
Resources e. Lesson plan,
functions of the following equipment and
features and functions of
chalkboard, sketches and
accessories:
equipment and accessories
charts and some
a. DC and AC machines
listed in 2.1 (a-k)
accessories
b. High frequency unit
b. Show students items listed
c. Gas economizer
in 2.1 (A-K)
d. Regulator
c. Ask students to sketch the
e. Air and water cooled
items
torches
d. Give student short notes on
f. Pedal switch
each
g. Gas nozzles h. Suppressor unit i. Flow meter j. Contactor k. Nylon hoses, etc 2.2 State the advantages and
f. Explain the advantages and l. Lesson plan, chalkboard
disadvantages of AC and DC welding
disadvantages of AC and DC m. Lesson plan,
systems
welding system
2.3 Identify the electrodes and filler wires
g. Describe the electrode and accessories
for TIG process and state their composition filler wires for TIG process 2.4 Identify the following gas cylinders by
and state their composition
their colour codes:
and show students samples
a. argon
of electrode and filler wire
b. helium
h. Ask students to explain and
c. carbon dioxide
show gas cylinders by their
d. hydrogen
colour code as listed in 2.4 (a-
e. nitrogen
e)
2.5 State the main advantage of the TIG
i. Call on students to identify
process over other welding processes.
them j. Give detailed notes k. Ask students to explain the main advantage of TIG process over other welding processes
75
chalkboard and TIG n. Lesson plan and chalkboard
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
Resources
3.1 Explain the following major process
• Ask students to describe the • Lesson plan, Chalkboard
variables and characteristics.
major process variables and
3
• Sketches/Charts
a. Electrical
characteristics as listed in 3.1 accessories and materials
b. Direct current, pulsed
(a-d)
current alternating current
• Demonstrate TIG welding to
rectification and
students, emphasizing types
modulation volt,/ampere
of current rectification and
characteristics arc
modulation
initiation.
• Show students the different
c. Electrodes
types of electrodes and the
d. Types, shapes, current
profiles
carrying capacities and
• Explain the importance of
applications.
shielding glasses
e. Shielding Gases
• Give detailed notes on all of
f. Pure and mixed,
the above
functions and applications g. d) Filler materials and their composition 3.2 Appreciate the applications of TIG
• Explain the application of
• Lesson plan,
welding process and select suitable
TIG welding process and
• Chalkboard
operating characteristics for the welding of state operating characteristics • Charts the following: low carbon steels, high yield for the welding listed in 3-2 steels, stainless alloys, nimonic alloys,
and give detailed notes
titanium alloy, cooper alloys and aluminum alloys.
76
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
Resources
3.3 Compare backing materials, purging
• Explain backing materials
• Lesson plan and
and under-bead shielding as a means of
purging and under-bead
chalkboard
producing acceptable welds.
shielding as mean of producing acceptable welds.
4
3.4 Explain the effects of joint preparation
• State the effect of joint
on the production of acceptable and
preparation on the production
economical welds by the TIG welding
of acceptable and economical
processes
welds by TIG welding
- do -
processes and give notes. 3.5 Explain the importance of adhering to
• State the importance of
specifications, codes and standards for
adhering to specification
TIG welding processes.
codes and standards for TIG welding processes and give notes
77
- do -
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome 3.6 List and state the functions of TIG
Teachers Activities
Resources
• Explain the functions of TIG • Lesson plan, Chalkboard
welding accessories, e.g. electrode holder, welding accessories as listed and earth lead, welding lead, etc.
in 3.6
• TIG welding accessories
3.7 Describe with sketches the materials
• With the aid of sketch or
• do -
composition of different types of electrodes diagram, ask student to used for TIG welding.
sketch each of the items
• Lesson plan • TIG welding machine
3.8 Set and use the TIG welding machines • Ask students to explain with equipment and materials.
5
• Lesson plan Chalkboard
to weld the following metals - aluminum,
sketches the materials
copper and stainless steel at specified
composition of different types and Charts
voltage observing safety precautions
of electrodes use for TIG
3.9 Explain the difference between TIG
welding.
and MIG processes.
• Ask students to demonstrate the setting up and use of TIG welding machines for welding metals as listed in 3.8 observing all safety precautions • Call on students to perform above. • Ask students to state the differences between TIG and MIG processes
78
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
Resources
3.10 Explain the factors that govern the
• State the factors that govern • Lesson plan Chalkboard
design of joints requiring MIG and TIG
the design of joints requiring
• TIG welding equipment
processes e.g.
MIG and TIG processes as
and accessories and
a) type of metal
listed in 3.10 (a0c) and
materials.
b) thickness of metal
demonstrate the welding of
c) shape of material
metal joints using TIG and
d) position of joint; and
MIG processes in positions
welding various metal
listed in 3.10
joints using TIG and MIG
• Ask the students to practice
processes in the following
the process
positions:
• Give detailed notes
a) flat positions b) confined space c) other positions 3.11 Sketch and explain the meaning of
• Sketch and state the
• Lesson plan Chalkboard
the various arc welding
meaning of the various arc
and
symbols/conventions, e.g. symbol of a
welding symbols/conventions • Sketch/chart
single V butt weld with sealing run, symbol as out line in 3.11 of weld on both sides etc.
79
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
3.12 Weld metals using at least six of the
• Demonstrate the welding of
following ancilliary welding processes:
metals using at least six of
a. resistance
the ancillary welding
b. spot
processes listed in 3.12 (a-l)
c. seam
• Prepare and give detailed
d. projection
notes
e. submerged arc
• Explain the factors
f. flash butt
governing the choice of any of
g. fire cracker
the ancillary processes
h. stud
named in 3.12 above
Resources
i. atomic hydrogen, etc. j. Thermit k. Helectrode l. plasma arc
6
3.13 Outline the factors governing the
• Demonstrate the use of TIG • Lesson plan
choice of any of the ancilliary processes
and MIG welding techniques
named in 3.12 above
on the listed items in 3.14 (a - equipment, tools and
3.14 Produce using TIG and MIG welding
f)
techniques the following items:
• Give detailed notes
Ancilliary/welding materials - do -
a. pressure vessels
• Demonstrate the welding of • Lesson plan, TIG and
b. pipe flanges
fixed cluster in a gearbox
MIG welding equipment, accessories and materials
c. boiler drums
- do -
d. box section chassis e. tool post guides on a lathe machine f. fixed clusters, etc. 3.15 Weld the fixed cluster in a gearbox.
80
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
3.16 Explain the principles of MIG welding • State the principles of MIG and state the techniques of consumable
welding and explain the
and non-consumable electrodes and wires techniques of consumable and their composition.
and non-consumable
Resources • Lesson plan Chalkboard Appropriate electrodes and wires - do -
3.17 Explain the details of equipment used electrode and wires and their • Lesson plan, Chalkboard and describe the setting of their controls
composition.
3.18 state the effects of wrong setting, type • Give detailed notes of defects, causes and elimination
• State the details of equipment used and explain the setting of their controls • Explain the effect of wrong setting, type of defects, causes and elimination.
81
Sketches/Chart
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome
Teachers Activities
3.19 Explain the following major process
• State the major process
variable and characteristics:
variables and characteristics,
a. Modes of metal transfer
listed in 3.19 (a-c)
b. Electrical - power supply characteristics characteri stics relative to modes of metal transfer - current density, speed, feed, voltage and inductanc e. c. Shielding gases - pure and mixed, functions and Applications.
82
Resources - do -
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the basic principles and techniques of TIG and MIG welding and be able to apply them in fabricating simple machine component parts Week Specific Learning Outcome 3.20 Apply the MIG welding process and
Teachers Activities
Resources
• Demonstrate the MIG
• Lesson plan
select suitable operating characteristics for welding process and show welding:
suitable operating
a. M.S (Mild Steel) in
characteristics for welding of
different welding position
items listed in 3.20 and give
b. S.S (Stainless Steel)
detailed notes
• MIG equipment & Accessories/Materials
c. Aluminium d. Pipes and pipe joints e. Titanium alloys f. Copper alloys, etc. 3.21 Explain the principles of spot welding • Ask students to state the
7
• Lesson plan • Chalkboard
and describe the size and shape of
principle of spot welding and
electrode in relation to metal thickness
explain the size and shape of • Spot welding machine
3.22 State the purpose of spot welding in
electrode in relation to
machine shop or industry
thickness
3.23 State the effects of current, time and
• Explain the purpose of spot
force in spot welding process
welding in machine shop or
3.24 Evaluate the effect of heat balance
industry
and heat shrinkage in welding
• Explain the effect of current
3.25 Describe the methods of external
time and force in spot welding
cooling on welds
process
3.26 Discriminate between the types of
• Explain the effect of heat
welds e.g. plasma arc or sub-merge arc
balance and heat shrinkage in
and spot welding
spot welding • Explain the method of external cooling on welds • Explain the difference between the types of welds produced by plasma arc, submerged arc and spot welding • Give detailed notes on all of the above
83
- do -
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 4.0: Apply appropriate workshop processes and techniques to mark out and form projects for welding Week Specific Learning Outcome
Teachers Activities
Resources
4.1 Mark out the following projects in
• Demonstrate the marking
• Lesson plan Spot
welding - applying appropriate tools,
out of project in welding as
Welding, Appropriate
techniques and safety practice:
listed in 4.1 (a-d) applying
Equipment, Tools,
a. Rectangular container
appropriate tools, techniques Materials and Protective
b. Cylindrical shaped
and safety practices
objects
• Give students projects
c. Solid corner joints
involving items listed in 4.1
Wear
d. Butt joint 4.2 Prepare bronze components for
• Ask students to demonstrate • Lesson plan, Welding
welding avoiding sharp edges and weld to preparation and welding of specification.
bronze component for
Equipment Tools and Materials
avoiding sharp edges and welding to specifications and give notes 4.3 Prepare stainless steel components for • Demonstrate preparation
• - do -
welding using welding rods and techniques and welding of stainless steel and observing safety precautions.
components using welding rods and techniques and observing safety precautions.
4.4 Identify and state the type, composition • List types of stainless steel
• Lesson plan,
and properties of common stainless steels • Explain their composition
Chalkboard, Sketches
used in metal work
• Discus their properties and
Chart and Different pieces
uses
of stainless steel.
84
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 5.0: Make different types of welded joints in all positions Week Specific Learning Outcome
Teachers Activities
5.1 Describe with sketches the application • Explain with sketches the
• Lesson plan
application of the following
• Chalkboard and
a. Square butt
joint in metal fabrication as
• Charts
b. Single vee
listed in 5.1 (a-e)
c. Double vee
• Ask students to sketch the
d. Single U
joints
e. Open corner, etc.
• Give detailed notes on each.
of the following joints in metal fabrication:
9
Resources
5.2 Prepare edges for welding the joints in • Demonstrate how to prepare • Lesson plan, Necessary 5.1 observing safety rules.
edge for welding the joints in Tools, Equipment and 5.1 observing safety rules
Materials
• Ask the student to prepare edges for welding joints in 5.1 5.3 Weld pipes and flanges in various
• Demonstrate how to weld
positions e.g:
pipes and flanges in various
a) fixed position
- do -
position - both fix and rotated
b) rotated position
10
5.4 Prepare metal surfaces and make
• Demonstrate how to prepare - do -
multi-run and weaving welds
metal processes and make multi run and weaving
5.5 Weld joints in vertical, horizontal and
• Demonstrate how to weld
overhead positions
joint in vertical, horizontal and overhead positions. • Ask the student to carry out the above operations and give detailed notes
85
- do -
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: WELDING
Course Code: CFW 21
Contact Hours: 15 per week 4 Tutorials; 11 Practicals
Course Specification: Theoretical/Practical contents General Objective 6.0: Understand and apply the fuel-gas cutting process in cutting metals to given specification. Week Specific Learning Outcome
Teachers Activities
6.1 State the principles and applications of • Explain the principles and fuel-gas cutting process, e.g.:
Resources Lesson plan, Chalkboard
applications of fuel-gas
a. Manual
cutting as listed in item 6.1 (a-
b. Machine
b) • Give the students, projects
11
involving the two processes 6.2 Describe various fuel-gas used in oxy- • Ask students to state fuel cutting e.g:
- do -
various fuel-gases used in
a. acetylene
oxy-fuel cutting gas listed in
b. propane
6.2 (a-d)
c. butane d. coal-gas, etc 6.3 State the advantages and
• Explain the advantages and - do -
disadvantages of using the above-named
disadvantages of using above
fuel-gas for oxy-fuel cutting operations
named fuel gases for oxy-fuel cutting operation.
6.4 Prepare templates for the mass
• Demonstrate how to prepare • Lesson plan, Equipment
production of given objects of regular or
templates for mass
irregular shapes by profile cutting
production of given object by
Tools and Materials
profile cutting 12
6.5 Cut smooth, curved, circular and
• Demonstrate and explain
• Lesson plan Appropriate
straight objects using the hand cutting
how to cut smooth, curved
Equipment Tools and
torch including oxy-lance and flame
circular and straight objects
Materials
gauging
using hand flame gauging.
6.6 Produce project involving Arc and
Assist student to design and
Ancillary welding process
produce projects involving Arc equipment. and ancillary welding. Test and evaluate the student Give detailed notes on all of the above
Week 13 Examination - Practical 60%, Theory 40%
86
Arc and ancillary welding
Structural Mechanics and Specification PROGRAMME:
Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE:
CFW 22-Structural Mechanics and Specification
DURATION:
15 Hours/week 4 Tutorial; 11 Practical
GOAL:
The Module is designed to provide the trainee with the knowledge of simple structural Mechanics and standard specifications required to appreciate steel designs and working drawings
General Objectives: 1. Apply simple structural mechanics and standard specifications to structural steel work design. 2. Interpret and produce structural steel working drawings Practical Competence On completion of this module, the student will be able to: 12. Apply with facilities, standard specification for structural steel construction 13. perform simple calculation on structural steel construction 14. interpret and produce simple structural steel working drawings 15. produce projects applying simple structural mechanics and standard specification to structural steel work
87
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL MECHANICS AND
Course Code: CFW 22
SPECIFICATION
Contact Hours: 15 per week - 4 tutorials; 11 practicals
Course Specification Theoretical/Practical contents General Objective 1.0: Apply simple structural mechanics and standard specifications to structural steel work design. Week Specific Learning Outcome
1-2
Teachers Activities
Resources
1.1 Apply with facility standard
• Demonstrate the application of
• Lesson plan
specifications for structural steel
standard specifications for structural
• Chalkboard
construction using America or British
steel construction. And give detailed
• Charts.
Standards and their Nigerian counter-
notes
parts. 1.2 Calculate weight of given structural
• Explain and calculate the weight of a • Lesson plan
steel components using appropriate table given structural steel components of specifications.
• Chalkboard.
using appropriate specifications • Give the students problems to solve
1.3 Draw diagrams to show the
• Sketch diagrams to show the
applications of the following in structural application of structural steel work steel work: a. tensile forces and
forces and stresses and ask the
• Lesson plan • Chalkboard • Charts
students to do same.
stresses b. compressive forces 3
and stresses c. shear forces and stresses 1.4 Calculate the reaction at the supports • Explain and calculate the reaction at of cantilever and simply supported
the support of cantilever and simple
beams having points and uniform loading supported beam having points and e.g. simple shed frame with flat roof.
uniform loading.
88
• Lesson plan • Chalkboard, etc.
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL MECHANICS AND
Course Code: CFW 22
SPECIFICATION
Contact Hours: 15 per week - 4 tutorials; 11 practicals
Course Specification Theoretical/Practical contents General Objective 1.0: Apply simple structural mechanics and standard specifications to structural steel work design. Week Specific Learning Outcome
Teachers Activities
Resources
1.5 Calculate bending moments and
• Explain the calculation of bending
• Lesson plan
moment of resistance of simply
moments and moment of resistance of • Chalkboard
supported beam with point and uniform
simply supported with point and
loading.
uniform loading.
• Charts.
• Give the students problems to solve 4
1.6 Determine sizes of materials or
• Explain how to determine sizes of
• Lesson plan
sections required for columns, rafters,
materials required for columns, rafters, • Chalkboard
etc.
etc.
• Charts
1.7 Sketch bending moment diagram for • Sketch and explain bending moment • Lesson plan cantilever with uniform load and calculate diagram for cantilever with uniform load • Chalkboard the bending moment.
and calculation on the bending
• Charts
moment. 1.8 Apply 1.4 in determining reaction at
• Demonstrate how to apply 1.4 in
• Lesson plan
support of actual frames. e.g.
determining reaction at support of
• Appropriate tools
actual frames.
and equipment.
b. canopy c. riveted angle stiffered for crane beams 1.9 Apply stress diagrams to determine 5
• Explain how to apply stress diagrams • Lesson plan
load on member of structural frames. e.g. to determine load on member of
• Chalkboard
trusses.
• Charts
structural frames.
• Appropriate tools and equipment 1.10 Calculate bending stress due to web • Explain the calculation of bending
• Lesson plana
or flange connections. E.g. floor beams
stress due to web or flange
• Chalkboard
multistory frame building.
connections
89
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL MECHANICS AND
Course Code: CFW 22
SPECIFICATION
Contact Hours: 15 per week - 4 tutorials; 11 practicals
Course Specification Theoretical/Practical contents General Objective 1.0: Apply simple structural mechanics and standard specifications to structural steel work design. Week Specific Learning Outcome
Teachers Activities
1.11 Explain the purpose of the following • Enumerate the purpose of the
• Lesson plan
following in structural steel assembly:
• Chalkboard
b. rag bolt
• rag bolt
• Posters
c. gusset plate
• gusset plate
• Samples
d. base plate
• base plate
in structural steel assembly: 6
Resources
1.12 Calculate the deflections on a
• Solve some problems involving
• Lesson plan
column or other members using standard calculations on deflections on a column • Chalkboard specifications/formulae.
or other members using standard
• Charts.
specifications/formulae. • Give the students problems to solve General Objective 2.0: Interpret and produce structural steel working drawings Week Specific Learning Outcome
Teachers Activities
Resources
2.1 Read and interpret working drawings • Explain how to read and interpret
• Lesson plan
of structural steel work
working drawings of structural steel
• Chalkboard
work
• Relevant work drawings.
2.2 Design and produce simple structural • Demonstrate how to design and
• Lesson plan
drawings observing conventional
produce simple structural drawings
• Chalkboard
standards, symbols and notations.
observing conventional standards,
• Relevant work
symbols and notations.
drawings
2.3 Produce project applying simple
• Ask student to produce project
structural mechanics and standard
applying simple structural mechanics
specification to structural steel work
and standard specification to structural steel work. • Test and evaluate the students
Week 13 Examination - Practical 60%, Theory 40%
90
-do-
Structural Steel Work PROGRAMME:
Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE:
CFW 23-Structural Steel Work
DURATION:
15 Hours/week 4 Tutorial; 11 Practical
GOAL:
The Module is designed to provide the trainee with further knowledge and skills to carry out simple design, fabrication and erection of structural steel work
General Objectives: 1. Develop and Produce Templates for Structural Steel Work 2. Fabricate and Assemble various structural steel components for and products such as roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc. 3. Inspect finished structural steel work for defects and rectify the defects as necessary Practical Competence On completion of this module, the student will be able to: 1. Develop and produce template for structural steel work 2. Fabricate and assemble various structural steel component 3. carry out inspection on structural steel project 4. Rectify defects in structural steel project 5. provide and develop temperature for structural steel work
91
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 23
Contact Hours: 15 per week - 4 Tutorials, 11 practicals
Course Specification Theoretical/Practical contents General Objective 1.0 Develop and Produce Templates for Structural Steel Work Week Specific Learning Outcome
Teachers Activities
1.1 Calculate areas of irregular surfaces • Solve problems involving using the following rules: a. mid-ordinates rule
calculation on areas of irregular
Resources • Lesson plan • Chalkboard
surfaces using various methods
b. Simpson's rule • Demonstrate how to develop
• Lesson plan
a. regular surfaces
templates having:
• Chalkboard.
b. irregular surfaces
• regular surfaces
• Drawing instruments
1.2 Develop given templates having:
• irregular surfaces • show students how to how to
from the following materials:
cut out developed templates from • Template materials
a. wood 4
• Lesson plan
1.3 Cut out the developed templates
various materials.
Relevant tools and equipment.
b. card-board c. other suitable materials 1.4 Reproduce the cut templates in 1.3
• Demonstrate how to reproduce • Lesson plan
above from structural steel materials
cut templates in 1.3 from
using the following workshop processes: structural steel materials using a. cutting - using oxy-
various workshop processes.
fuel gas, profile cutting
• Ask students to perform the
and power saw
above functions
b. punching - using punching machine c. chamfering - using oxy-fuel gases
92
• Materials, Relevant Tools and Equipment.
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 23
Contact Hours: 15 per week - 4 Tutorials, 11 practicals
Course Specification Theoretical/Practical contents General Objective 2.0: Fabricate and Assemble various structural steel components for and products such as roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc. Week Specific Learning Outcome
Teachers Activities
Resources
2.1 Explain the functions of jigs and
• State the functions of jigs and
• Lesson plan
fixtures in structural steel works
fixtures in structural steel works. • Chalkboard, Sample of • Give notes
jigs and fixtures
2.2 Make simple jigs, fixtures and
• Demonstrate how to make
• Lesson plan
manipulators for assembling structural
simple jigs, fixtures and
• Appropriate tools and
steel members.
manipulators for assembling
Equipment.
structural steel members.
5-7
2.3 Assemble structural components
• Demonstrate how to assemble • Lesson plan Appropriate
using the following jointing methods:
structural components using
Tools and Equipment and
a. welding (arc and gas)
various jointing methods
Structural Components
b. riveting
• Students asked to perform the
c. bolting
above function
2.4 Explain the purpose of metal
• State the purpose of metal
• Lesson plan
finishing e.g.
finishing
• Chalkboard
a) protection from the weather and corrosion b) decoration 2.5 Describe the composition of various • Explain the composition of
• Lesson plan
materials used for finishing structural
various materials used for
• Chalkboard
steel work
finishing structural steel work
• Samples of materials for finishing
2.6 Prepare the surfaces of structural
• Demonstrate how to prepare
steel components for finishing using the the surfaces of structural steel
• Lesson plan • Samples of Structural
components for finishing using
Components, Appropriate
a. brushing - using wire
various techniques
tools and equipment
brush
• Ask student to perform above
b. de-greasing, using
operations
following techniques:
suitable degreasing agent c. de-scaling
93
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: STRUCTURAL STEEL WORK
Course Code: CFW 23
Contact Hours: 15 per week - 4 Tutorials, 11 practicals
Course Specification Theoretical/Practical contents General Objective 2.0: Fabricate and Assemble various structural steel components for and products such as roof trusses, stanchions, girders, slop-plating, bridges, tanks, etc. Week Specific Learning Outcome
8
Teachers Activities
Resources
2.7 Apply suitable undercoat to
• Demonstrate how to apply
• Lesson plan
structural steel components e.g. red
undercoat to structural steel
• Appropriate Tools and
oxide by brushing or spray methods.
components
Equipment
2.8 Store and maintain structural steel
• Explain methods of storing and • Lesson plan
materials and equipment
maintaining structural steel
• Chalkboard
components
• Visit Relevant Stores.
General Objective 3.0: Inspect finished structural steel work for defects and rectify the defects as necessary Week Specific Learning Outcome
Teachers Activities
3.1 Identify common defects in structural • State common defects in
• Lesson plan
structural steel assembly as
• Chalkboard
a. distortion
listed in 3.1
• Any Relevant Materials
b. undercutting
• Show student sample of defects • Lesson plan
c. lack of reinforcement
• Give detailed notes
• Sample of defects
d. lack of penetration of
• Ask students to demonstrate
• Sample of finished weld
weld, etc. and state their
how to carry out visual inspection Components, Relevant
causes.
to detect defects on finished
steel assembly e.g.
9-12
Resources
3.2 Carry out visual inspection to detect structural steel assembly
Tools and Equipment. • Lesson plan
defects on finished structural steel
• Ask students to demonstrate
• Samples of
assembly
how to rectify defects in
Components with weld
3.3 Rectify defects in assembled
assembled structural steel
defects,
structural steel components
components
• Relevant Tools and
3.4 Produce and develop templates for
• Give detailed notes
Equipment.
structural steel work
• Test and evaluate the students
3.5 Fabricate and assemble various structural steel component Week 13 Examination - Practical 60%, Theory 40%
94
Sheet metal work PROGRAMME:
Advanced National Technical Certificate In Fabrication And Welding Engineering Craft
MODULE:
CFW 24-Sheet Metal Work
DURATION:
15 Hours/week 4 Tutorial; 11 Practical
GOAL:
The Module is designed to upgrade the professional competence of operators who has good knowledge of the use and application of sheet metal working equipment, materials, processes, techniques and safety precautions
General Objectives: 1. Understand the Principles of Pantograph System and pattern forming attachment 2. Understand the construction of patterns and masters of irregular trinket box shapes using pattern forming machine/attachment. 3. Understand the mechanical cutting of basic geometrical shapes 4. Understand the processes of planning and layout of engineering workshops/industry. Practical Competence On completion of this module, the student will be able to: 1. Apply machines for the production of sheet metals work 2. Design, Construct and decorate articles 3. Construct patterns of irregular shapes using pattern forming attachment 4. Participate in the planning and laying out engineering workshop/industry
95
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 24
Contact Hours: 15 per week-4 theory: Practical 11
Course Specification: Theoretical/Practical contents General Objective 1.0: Understand the Principles of Pantograph System and pattern forming attachment Week Specific Learning Outcome
1-3
Teachers Activities
Resources
1.1 State the principles, functions and
• Explain the principles, functions • Lesson plan
the constructional details of pattern
and the constructional details of
• Chalkboard
forming machines and attachments
pattern forming machines
• Posters/charts.
1.2 Explain the types and
• Explain the types and
• Lesson plan
characteristics of the machines in 1.1
characteristics of the machines in • Chalkboard
above
1.1
• Posters
1.3 Apply the machines for the
• Demonstrate how to apply the
• Lesson plan
production of sheet metal work
machines for the production of
• Relevant tools and
sheet metal work. Give note on
equipment
all of above General Objective 2.0: Understand the construction of patterns and masters of irregular trinket box shapes using pattern forming machine/attachment. Week Specific Learning Outcome 4-6
Teachers Activities
Resources
2.1 Explain the methods of box and
• Sate the methods of box and
• Lesson plan
tray construction, using beadings and
tray construction, using beadings • Chalkboard
joints.
and joints. Give detailed note.
• Drawing instruments
2.2 Explain the making of articles such • Demonstrate how to produce
• Lesson plan
as oblique tee with branch, lobster back articles such as oblique tee with
• Chalkboard
bend, and similar utensils which involve branch, lobster back bend, and
• Drawing instruments
the development of a pattern.
similar utensils which involve the appropriate tools and development of a pattern.
equipment
2.3 Design, construct and decorate
• Demonstrate how to design,
• Relevant materials for
articles combing ornament with utility.
construct and decorate articles
demonstration
combining ornament with utility.
96
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 24
Contact Hours: 15 per week-4 theory: Practical 11
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the mechanical cutting of basic geometrical shapes Week Specific Learning Outcome
Teachers Activities
Resources
a. 3.1 Review of sheet metal materials • Explain and review non-ferrous • Lesson plan and their preparation for industrial use sheet metal material and their
• Chalkboard
of the following metals: Tin, Lead, Zinc, preparation for industrial use.
• Materials
Copper, and Aluminium
Give detailed note
3.2 State the composition of more
• Explain the composition of
• Lesson plan
important brasses and bronzes, inconel more important alloy metals and • Chalkboard and monel; their properties and chief 7-8
alloy elements; their properties
• Samples of materials
uses, the composition and properties of and uses. wrought aluminium alloys, magnesium and titanium alloys in common use. 3.3 Describe the process of
• Explain the process of
• Lesson plan
manufacture of mild steel sheets of
manufacture of coated sheet
• Chalkboard
various tempers, the manufacture of
metals, listed in 3.3. Give
• Samples of materials
coated sheets such as tinned sheets,
detailed notes.
templates and galvanized iron.
97
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 24
Contact Hours: 15 per week-4 theory: Practical 11
Course Specification: Theoretical/Practical contents General Objective 3.0: Understand the mechanical cutting of basic geometrical shapes Week Specific Learning Outcome
Teachers Activities
Resources
3.4 Develop and produce at least two
• Demonstrate how to develop
• Lesson plan
sheet metal projects involving the use
and produce sheet metal projects • Drawing instruments,
of more advanced machines and the
involving the use of more
appropriate materials,
application of advanced pattern
advanced machines.
tools and equipment.
development covered in fabrication
• Give student project on the
drawing.
above to produce some of the
Note: Some of the sheet metal project
items listed in 3.4
should include: a. trinket box of all types b. lobster back bend c. oblique tee with branch d. small bait can
9
e. petrol or oil measure f. oval container with lid or with loose lid g. oiled bottle h. conical jug i. scoop j. funnel k. ornamental bowls and vases. Etc. 3.5 Explain the methods of producing
• State the methods of producing • Lesson plan
more difficult work in hollowing, raising more difficult beating sheet metal • Chalkboard. and planishing, hand flattening and
work.
setting.
• Discuss and demonstrate processes involved
98
PROGRAMME: ADVANCED NATIONAL TECHNICAL CERTIFICATE IN FABRICATION AND WELDING ENGINEERING CRAFT PRACTICE COURSE: SHEET METAL WORK
Course Code: CFW 24
Contact Hours: 15 per week-4 theory: Practical 11
Course Specification: Theoretical/Practical contents General Objective 4.0: Understand the processes of planning and layout of engineering workshops/industry. Week Specific Learning Outcome
10-12
Teachers Activities
Resources
4.1 Demonstrate the methods of
• State the methods of planning
• Lesson plan
planning and the layout of shops in
and layout of shops in
• Chalkboard, Charts visit
engineering workshops/factory
engineering workshops/factory
factory
regulations.
regulations. Give detailed note
• Lesson plan
4.2 Know the types of
• Explain different types
• Visit
workshops/industry, e.g. mechanical,
workshops/industry. Give
workshops/industries
electrical, welding, carpentry, etc.
detailed notes.
• Lesson plan
4.3 State the types and function of
• Explain the types and function
• Visit
sections in the workshops.
of sections in the workshop.
workshops/industries
4.4 Describe and lay out plan for single, • Explain lay out plan for single,
• Lesson plan
batch and quantity production of
batch and quantity production of • Chars
engineering components.
engineering components.
• Visit factory/industry.
4.5 Arrange workshops according to
• Explain how to arrange
• Lesson plan
the lay out plans
workshops according to the lay
• Charts.
4.6 Produce project involving pattern
out plans
• Lesson plan
forming machines
• Test and evaluate the students • Material, tool and • Take student on excursion to industries
Week 13 Examination - Practical 60%, Theory 40%
99
equipment
List of tools and equipment for welding and fabrication engineering S/NO
MINIMUM
QUANTITY
ADDITIONAL
QUANTITY
AVAILABLE
QUANTITY REQUIRED
REQUIRED 1.
Power guillotine of capacity
2
10swg x 36 in length 2.
Treadle guillotine of capacity
2
20swg x 36 length 3.
Swing beam folder 10swg x 3'-6'
2
capacity 4.
Bending roller capacity 40"x2"
2
dia 5.
Bending roller capacity 18"x11/4
2
dia 6.
Bench mounted cone roller
5
7.
Hand-operated copper capacity
5
3/32 in mild steel 8.
Power bench grinding machine
2
9.
Double-ended buffer and polisher
2
10.
Universal beading and swaging
2
machine 11.
Power-operated drilling machine
2
maximum capacity 3/8" 12.
Wheeling machine
2
13.
Fly Press
1
14.
Hand nibbling Machine
2
15.
Left and right hand snips
16.
Straight snips
5
17.
A "kit" of tools consisting of
5
5 each
hammer, mallet, steel rule, scriber and wing compass, etc. 18.
Bench shears
2
19.
Power saw cutting machine
2
10mm
100
S/NO
MINIMUM
QUANTITY
ADDITIONAL
QUANTITY
AVAILABLE
QUANTITY REQUIRED
REQUIRED 20.
Disc cutting machine
2
21.
Profile cutting machine with gas
2
cutting nozzles 22.
Piller drilling machine
2
23.
Louver shearing machine
2
(manual) 24.
Overhead crane
1
25.
Straightening machine
2
26.
Cropping machine
2
27.
Straight edge
10
28.
Trammels dividers (set)
10
29.
Hammers
10
30.
Chisels
10
31.
Punches
10
32.
Try-squares
10
33.
Steel rules
10
34.
Smith open forge
2
35.
Vee blocks
10
36.
Electrode holders
10
37.
Electrode drying oven
2
38.
Heavy duty grinding machine
2
39.
Bench-type grinding machine
2
40.
CO2 cylinders
5
41.
Transformers With rectifiers (with
10
all Instruments) 42.
Aprons (assorted
20
43.
Hand gloves
20
44.
Hand shields and head caps
10
45.
Wire brushes
10
46.
Electrical beaters
2
47.
Pliers – assorted
10
48
Gas welding goggles
5
101
S/NO
MINIMUM
QUANTITY
ADDITIONAL
QUANTITY
AVAILABLE
QUANTITY REQUIRED
REQUIRED 49
Double cylinder trolley
2
50
Oxygen regulators
5
51
Acetylene regulators
5
52
Hoses and clips and all attachments set
53
Blowpipes (low and high
5
pressure 54.
Tongs
5
55.
Combined set of cutting welding
5
outfit 56.
Power operated profile cutter
2
with turntable 57.
D.C generators with all
5
connections 58.
A.C transformer (Argon) with all
5
the connections 59.
Argon cylinders
5
60.
Regulators with flow meters
5
61.
Hacksaw and blades
24
62.
Water to carbide generators
4
63.
Carbide to water generators
4
64.
Overhead projector
1
65.
Computer set
1
66.
ANVIL
2
67.
Swage block
2
68.
Chipping hammers
20
69.
Plain goggles
20
70.
First aid box
2
71.
Sledge Hammer
2
72.
G. Clamps - assorted
26
73.
Self grip pliers - assorted
6
74.
Magnetic clamp
3
75
Flatters
6
76
Molegrip
6
102
Guideline for textbooks development NATIONAL/ADVANCE TECHNICAL CERTIFICATE IN REFRIGERATION AND AIR CONDITIONING WORK The following guidelines are suggestions from the Engineering Committees to the writers of the textbooks for the new curricula. They are intended to supplement the detailed syllabuses which have been produced, and which define the content and level of the courses. Authors should bear in mind that the curriculum has been designed to give the students a broad understanding of applications in industry and commerce, and this is reflected in the curriculum objectives. • One book should be produced for each syllabus • Page size should be A4 • The front size should be 12 points for normal text and 14 point where emphasis is needed. • Line spacing should be set to 1.5 lines • Headings and subheadings should be emboldened • Photographs, diagrams and charts should used extensively throughout the book, and these items must be up-to-date • In all cases the material must be related to industry and commerce, using real life examples wherever possible so that the book is not just a theory book. It must help the students to see the subject in the context of the 'real word' • The philosophy of the courses is one of an integrated approach to theory and practice, and as such the books should reflect this by not making an artificial divide between theory and practice. • Examples should drawn from Nigeria wherever possible, so that the information is set in a country text. • Each chapter should end with student self-assessment questions (SAG) so that students can check their own master of the subject. • Accurate instructions should be given for any practical work having first conducted the practical to check that the instructions do indeed work.
103
• The books must have a proper index or table of contents, a list of references and an introduction based on the overall course philosophy an aims of the syllabus. • Symbols and units must be listed and a unified approach used throughout the book. • In case of queries regarding the contents o the books and the depth of information, the author must contact the relevant curriculum committee via the National Board for Technical Education. The final draft version of the books should be submitted to Nigerian members of the curriculum working groups for their comments regarding the content in relation to the desired syllabus.
104
Recommended books for fabrication and welding engineering craft practice S/NO BOOKS
AUTHORS
1.
BASIC WELDING AND FABRICATION
W. KENYON
2.
BASIC ENGINEERING CRAFT STUDENTS: FABRICATION AND
BOURBOUSSON &
WELDING 05
ASHWORTH
THE TECHNOLOGY OF SHEET METAL WORK FOR STUDENTS
A. DICKSON
3.
AND CRAFTSMEN 4.
THE GEOMETRY OF SHEET METAL WORK FOR STUDENTS AND A. DICKSON CRAFTSMEN
5.
THE CALCULATION OF SHEET METAL WORK FOR STUDENTS
A. DICKSON
AND CRAFTSMEN 6. 7.
METAL: DESIGN AND CONSTRUCTION
A.C. DAVIS - Tenth Edition
(a) THE SCIENCE AND PRACTICE OF WELDING Vol. I Cambridge A. C. DAVIS V. Press, 1992 (b) Volume II above
8.
WELDING SCIENCE AND METALLURGY
J. CARDENER
9.
WELDING TECHNOLOGY
KOENISBERGE
10.
FABRICATION AND WELDING TECHNOLOGY
A. SMITH
11.
BASIC WELDING - Macmillian Publisher Ltd London, 1986
P. SOMSKY
12.
WELDING CRAFT PRACTICE - Part 1 Volume I Oxy-acetylene Gas
N. PARKIN & C.R. FLOOD
Welding and Related Studies 13.
WELDING CRAFT PRACTICE - Part 1. Volume 2: Electrical Arc Welding and Related Studies
105
N. PARKIN & C.R. FLOOD
List of Participants UNESCO-NIGERIA PROJECT IN SUPPORT OF REVITALIUSATION OF TECHNICAL AND VOCATIONAL EDUCATION(TVE) IN NIGERIA PROJECT TEAM MEMBERS S/No. NAME
DESIGNATION
1
Engr. Dr. Nuru A. Yakubu
National Project Coordinator & Executive Secretary, NBTE
2
Dr. M.S. Abubakar
Technical Coordinator
3
Engr. S.C. Odumah
Curriculum Development Coordinator
4
Mr. B.N. Niriyus
Staff Development Coordinator
5
Engr. Dr. S.N. Mumah
Information & Communication Technology Coordinator
6
Isa Alhaji Sulaimanu
Project Accountant
7
Engr. A.D.K. Muhammad
Project Officer
S/No Name
Address
1.
Ondo State Board for Tech. & Voc. Education or P.O. Box 975, Akure.
Omotorsho Isaac Bamidele
2.
Y.A. Alimi
Government Technical College P.M.B.5377, Ado-Ekiti
3.
G.G. Idris
Government Technical College K/Namoda Zamfara State
4.
J.I. Ortserga
Dept. of Voc. & Tech. Faculty of Education Benue State University, Makurdi
5.
F.M. Alega
Fest Development Department, National Business & Technical Exams Board (NABTEB) P.M.B. 1747, Benin City, Edo State.
6.
Olubode Daniel
National Board for Technical Education Kaduna
Majiyagbe
106