HEAT TREATMENT - Practice Mode

1) Which is a kind of surface hardening process?
Correct Answer: Nitriding
2) How much time is allowed normally in soaking zone for a 10mm thick metal piece while hardening?
Correct Answer: 5 minutes
3) What is colour of a metal piece when heated to 250 Degree C while doing the tempering process?
Correct Answer: Brown
4) What is the purpose of tempering a steel?
Correct Answer: To reduce the brittleness