Study Notes Quiz
With reference to the heat treatment of steel:
(a) explain which steels this process is best suited to;(2)
(b) explain EACH of the following processes, making reference to mechanical properties and internal structure:
(i) hardening;(4)
(ii) tempering.(4)
(a) Explain how the properties of steel are modified by its carbon content.(2)
(b) Explain EACH of the following terms:
(i) annealing;(3)
(ii) normalising;(3)
(iii) hardening.(2)
With reference to the case hardening of bearing journals:
(a) explain why this process may be carried out;(2)
(b) describe EACH of the following processes:
(i) induction hardening;(3)
(ii) nitriding;(3)
(c) explain why the processes described in part (b) are best suited to this application.(2)
With reference to case hardening steel components:
(a) describe the changes that occur with this process;(3)
(b) explain why it may be required;(2)
(c) describe EACH of the following processes:
(i) a simple shipboard process;(3)
(ii) solid pack carburising.(2)
With reference to aluminium:
(a) explain what is meant by work hardening;(2)
(b) describe the internal changes when it becomes work hardened;(2)
(c) state the effect work hardening has on its properties;(2)
(d) describe how it could be annealed on board a vessel.(4)
Describe the heat treatment process EACH of the following components would undergo, stating the reasons for EACH of the processes:
(a) crankshaft;(4)
(b) valve spring;(3)
(c) used copper washer.(3)