HEAT TREATMENT - Quiz

1) Which is a kind of surface hardening process?

Cementide Ferrite Nitriding Tempering

2) How much time is allowed normally in soaking zone for a 10mm thick metal piece while hardening?

5 minutes 10 minutes 15 minutes 20 minutes

3) What is colour of a metal piece when heated to 250 Degree C while doing the tempering process?

Blue Brown Purple Pale

4) What is the purpose of tempering a steel?

To reduce the brittleness To remove the ductility To increase the hardness To increase the brittleness