21) Which one of the following groups of quenching media is in order of their severity of the cooling rate, i.e. from slow to rapid cooling ?
Answer is:
forced air, oil, brine solution
Related Heat Treatment MCQ - Turner (Set-1) with Answers
Answer is:
Normalizing
Answer is:
Matensite
Answer is:
Annealing
Explanation:
The annealing process is carried out by heating the steel above the critical range, soaking it for sufficient time to allow the necessary changes to occur, and cooling at a predetermined rate, usually very slowly, within the furnace.
Answer is:
To improve machinability
Explanation:
Purpose of Annealing process is to
- To soften the steel.
- To improve the machinability.
- To increase the ductility.
- To relieve the internal stresses.
- To refine the grain size and to prepare the steel for subsequent heat treatment process.