Question 3
(a) List four cooling media used in heat treatment of steel.
(b) Sketch a set-up for an upsetting operation.
(c) List three steps involved in swaging.
(d) State two differences between cold and hot setts.
Observation
Most of the candidates who attempted this question could not provide the required responses to parts (b) and (c) of the question.
The required responses to these parts are:
Steps Involved in Swaging
- Heat the metal.
- Place the metal between the top and bottom swages.
- Strike the top swage while rotating the work.