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METAL WORK

SS 2 THIRD TERM


WEEK

TOPIC AND CONTENT

ACTIVITIES

1

Heat treatment,

  • Definition of heat treatment,

  1. Heat treatment process

  2. Annealing

(iii) Normalizing

(iv) Hardening

Case Hardening


  1. Tempering etc.




Teachers

should state the important of heat –treatment of metals



Students

should explain heat –treatment in terms of changing the grain structure of the metal in order to refine its grain.

Heating temperature and the mode of heating and quenching should be very important depend on the type of heat-treatment.


2

  • Materials and equipment for heat-treatment,

  • Materials:- Coal, brine, water, air, oil etc

  • Equipment:- Furnace, pyrometers, oven, quenching talks. etc

List material and equipment used for heat-treatment of metals.

  • Explains the function and equipment used for heat-treatments

  • State the coaling and heating equipment and how they are used.



3

  • Forging,

  • Definition of forging

  • Importance of forging

  • Method of forging

  1. Hand forging

  2. Drop forging

  3. Machine forging

Define forging as the process of heating and hammering metals to require shape.

State types of forging and important of forging metals work shape.




4

  • Hand equipment,

  • A Equipments

  1. Forge

  2. The anvil

  3. The Vice

  4. Swage

B Tools

  1. Hammers

  2. Tongs

  3. Cold set and Hardies

  4. Hot set and hardies



Heat a piece of wild steel plate in the forging or Black smith furnace.

-Use tong to hold the hot metals to the vice or anvil and ask student to hammer the piece of metal to shape.



5

  • Hand forging operations,

Up setting

Drawing down

Setting down

Bending


Punching and drifting etc.



Explain the process of various forging operations.

List at least 4 types of forging operation and explain two

Demonstrates various forging operations organize a visits local black smith work shop. For sites seeing.


6

Stick cutoff machine

(i)power hack saws

(ii)Horizontal band saws

-Definition of stick cutoh machine

-Four kinds of stick cutoh machines

(i)power Hack saws

(ii)Horizontal band saws cold saws Abrasive cutoh saws.


Describe the process of sawing, name tools and equipment used for power sawing guide students to perform power sawing operation successfully.

List tools and machines for power sawing



7

The lathe and the lathe operations,

Basic cutting operations

-size of lathes and their functions .

(i)Turret lathe

(ii)capstan lathe.


Describe the machine, identity the various part of the lathe and state their function .

Describe the at lest four operations carried out in the lathe

-state at last 7 safety precautions e.g. turning and falling .


8

Lath cutting tools and tool holders.

Cutting tools and tools holders cutting speed for the lath.



Describe right hand and left round cutting tools. Explain functions of these cutting tools e.g. slotting tools.

Explains cutting speed and solve the problem on the cutting speed.



9

The shaping machine /part of shading machine

-Quick – return machine

-cutting speed

-work holding

-tools and tolls holding


State that the direction of rotation of the milling cutter is anti-clock wise

State various operation performed on the milling machine such milling, climb milling, ends milling and milling.




10

Milling machine

-Definition

-Basic milling operation

-classification of the milling machine and their main ports.

Milling cutter,

Direction of rotation and feed work holding.



Define the universal dividing head as being used for cutting various gears

Explain the in term index and use the formula for the gear calculation.



11

The universal dividing heads (milling machine)

Universal head indexing






12

Revision

Revision

13

Examination

Examination

BASIC ELECTRICITY

SS 2 FIRST TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

ELECTRICITY GENERATION

-Concept of electricity generation

-Types of generating station

-Principles of operation

. Hydro-power station

-Advantages and disadvantages of hydro-power generation.



Illustrate, using diagrams, the operation of hydro-power station.

2

ELECTRICITY GENERATION

-Principles of operation of;

.Gas power station

.Steam power station

.Thermal power station

-Advantages and disadvantages of the types of power station.




Illustrate with diagram, the operation of the various types of power station.

3

TRANSMISSION OF ELECTRICITY

-Concept of transmission of electricity

-Method of transmission of electricity

-Differences between the short and medium transmission lines.



Illustrate with pictures, showing parts of the national grid.

4

TRANSMISSION OF ELECTRICITY

-Components of transmission system

--Function of components of transmission system.

-General layout for transmission of electric power.



Display some components of transmission system (conductors, insulator, protective devices) etc

5

DISTRIBUTION OF ELECTRICITY

-Basic concept of electricity distribution

-Layout and main components of electricity distribution

-Function of sub-station, transformers, distributors, and feeders.



Sketch the layout of main components of electricity distribution.

6

DISTRIBUTION OF ELECTRICITY

Field trip



Take students to see PHCN’s distribution network.

7

DC GENERATORS

Induced EMF

Definition of DC generator

Principles of operation and main parts of DC generator



Demonstrate with the right hand, fleming’s right hand rule.

8

DC GENERATOR 1

Calculation of generated voltage and output voltage.



Calculate generated voltages, and output voltage.

9

DC GENERATORS 2

Types of DC generators.



Sketch diagram of different types of DC generators.

10

DC GENERATORS 3

-Methods of connection of DC generators

-Differences between series, shunt and compound DC -generators.

-Uses of DC generators.



Sketch the connecting diagram for series, shunt, and compound DC generators.

11

Practical

Practical

12

Revision

Revision

13

Examination

Examination

BASIC ELECTRICITY

SS 2 SECOND TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

AC GENERATORS

-Principles of AC generator

-Description of the constructional features of AC generator.


Draw and label the diagram of an AC generator and explain each part.

2

AC GENERATOR

-Characteristics of AC generator.

-Application of AC generator.


Draw label and explain the wave generated by AC generators, showing the characteristics.

3

AC MOTORS

-Definition of AC motors.

-Principles of operating AC motors.

-Description of main features of AC motor.



Draw and label the main features of an AC motor.

4

AC MOTOR

-Types of AC motors

-Differences between single and three phase motors.


State with examples, the types of AC motors.

5

AC MOTORS

Domestic and industrial application of AC motors.



Display some electrical appliances that use AC motors, e.g electric fan, drilling machine etc

6

MEASURING INSTRUMENTS

-Identification of electrical measuring instruments.

Operational range of measuring instruments.


Use electrical measuring instruments to measure electrical quantities.

7

MEASURING INSTRUMENTS

-Conversion of moving coil instrument into ammeter.

-Conversion of moving coil instrument into voltmeter.


Demonstrate the conversion of moving coil instrument into ammeter/voltmeter.

8

MEASURING INSTRUMENTS

Measurement of various electrical quantities using the measuring instruments.



Carry out practical on measurements of voltage, current, and resistance using measuring instruments.

9

INSTRUMENTATION ERRORS

-Identification of sources of errors in electrical measuring instruments.

-Reduction of electrical instruments errors.


Demonstrate how instrument errors can be reduced during measurements.

10

INSTRUMENTATION ERRORS

Measurement of electrical quantities with electrical instruments with minimal errors.



Taking of readings with electrical instruments with minimal errors.

11

Practical

Practical

12

Revision

Revision

13

Examination

Examination

BASIC ELECTRICITY

SS 2 THIRD TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

WIRING REGULATIONS 1

-I.E.E regulation.

-Application of I.E.E regulation.


Use the current I.E.E regulation for explanation.

2

HAND TOOLS AND TESTING IMPLEMENTS

-Identification of hand tools.

-Identification of testing instruments.

-Application of tools and testing instruments.



Use hand tools and testing instruments.

3

TYPES OF ELECTRICAL WIRING

Types of wiring; surface, conduit, trunking, ducting etc




Carry out practical surface wiring.

4

LIGHTING POINTS AND SWITCHES

-Identification of lighting points

-Identification of control switches.


Display types of lighting points and switches.

5

WIRING REGULATION 2

-Preparation of cable ends.

-Method of termination of cables.


Demonstrate by joining two ends of cables with connector block.

6

CONDUIT MATERIALS

-Types of conduit materials.

-Classification of conduit materials.

-Application of conduit materials.



Display various types of conduit materials.

7

CONDUIT FITTINGS

-Types of conduit fittings.

-Classification of conduit fittings.

-Application conduit fittings.



Display various types of conduit fittings.

8

INSTALLATION OF CONDUIT SYSTEM

Conduit practical work; making out, preparing the conduit, termination, fixing, and drawing cables into conduit.



Take a field trip to a building site and observe, demonstrate the practical process of conduit installation.

9

TRUNKING AND DUCTING

-Types of trunking and ducting

-Types of trunking and ducting fittings.

-Area of application of trunking and ducting.



Describe where trunking and ducting are used, with the aid of a diagram.

10

POWER SOCKET OUTLETS

-Layout diagram of radial circuit, ring circuit, final sub circuit, and spur.

-Areas of application.


Catty out practical on a wiring board

11

MAINTENANCE AND REPAIRS

-Types of maintenance; preventive and corrective.

-General preventive maintenance of electrical appliances.

-Trouble-shooting; faults and remedy.



Demonstrate the repair of a faulty appliance, dismantle and reassemble an appliance.

12

Revision

Revision

13

Examination

Examination
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