Heat Treatment MCQ - Machinist(Set-1) with Answers

Heat Treatment MCQ - Machinist(Set-1) with Answers

26) During heat treatment when carbon is dissolved to form solid solution, it is known as

Answer is:

Austenite

27) Which one of the following is the solid carburizing material ?

Answer is:

Charcoal

28) While hardening, after heating the steel to the required temperature, it is held at that temperature as soaking time for normally

Answer is:

5 minutes for 10 mm thickness

29) Which one of the following quenching media is used for hardening H.S.S. tool ?

Answer is:

Oil

30) What is the hardening temperature for H.S.S. tool ?

Answer is:

1250 Degree Centigrade

3
4
5
6
7
8
9