Q157
Induction hardening is the process of
A.
Hardening surface of work-piece to obtain hard and wear resistant surface
AnswerB.
Heating and cooling rapidly
C.
Increasing hardness throughout
D.
Inducing hardness by continuous process
Answer: Option A
Solution
Answer: Option A
Solution:
Induction hardening is a process used for the surface hardening of steel and other alloy components. The parts to be heat treated are placed inside a water cooled copper coil and then heated above their transformation temperature by applying an alternating current to the coil.