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Engineering Materials - Engineering

Q1:

In spheroidising process, the steel is

A heated below the lower critical temperature and then cooled slowly

B heated upto the lower critical temperature and then cooled in still air

C heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

D none of the above

ANS:C - heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

Explanation: No answer description is available.