Question

Q4. The carburising heat treatment process is
used for
(A) Softening the metal
(B) Hardening the outer surface of steel
component while the core remains soft
(C) Refining the grain structure
(D) Relieving the internal stress​

Answer 1

Answer:

Carburizing, also referred to as Case Hardening, is a heat treatment process that produces a surface which is resistant to wear, while maintaining toughness and strength of the core. This treatment is applied to low carbon steel parts after machining, as well as high alloy steel bearings, gears, and other components.