Normalizing is a slow cooling process so after casting job is left in air to cool it.
While annealing is very slow cooling process in which job is left in furnace switching it off to relieve residual stresses coming from cold work.
27) The heat treatment process used for casting is
Answer is:
Normalizing
Explanation:
Related Material science MCQ with Answers
Answer is:
Tempering
Explanation:
Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys
Answer is:
3.5 to 4.5 % copper, 1.2 to 1.7 % mangenese, 1.8 to 2.3 % nickel, 06% each of silicon, magnesium and iron and rest aluminum.
Explanation:
Y-alloy contains 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium