In a hardening process, the hypo-eutectoid steel is

Question

TuteeHUB · Accepted Answer

Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled slowly in the furnace

TuteeHUB · Answer

Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled in still air

TuteeHUB · Answer

Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled suddenly in a suitable cooling medium

TuteeHUB · Answer

Heated below or closes to the lower critical temperature and then cooled slowly

1.	In a hardening process, the hypo-eutectoid steel is
A.	Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled in still air
B.	Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled suddenly in a suitable cooling medium
C.	Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled slowly in the furnace
D.	Heated below or closes to the lower critical temperature and then cooled slowly
Answer» C. Heated from 30¬¨‚àûC to 50¬¨‚àûC above the upper critical temperature and then cooled slowly in the furnace

Discussion