In process annealing, the hypo eutectoid steel is
A. Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
B. Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
C. Heated from 30°C to 50°C 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: Option D
Solution(By Examveda Team)
In process annealing, the hypo eutectoid steel isHeated below or closes to the lower critical temperature and then cooled slowlyThis Question Belongs to Mechanical Engineering >> Engineering Materials
d correct
Hypo eutectoide steel heated above the upper critical temperature after that cooled slowly in furnce
D is correct
C is correct
C OPTION IS THE CORRECT ANSWER, For annealing material cooled with in the furnace itself with swith off the heat supply
No. This ans correct for hypereuteiod steel.
Not for hypeuteiod steel.
So ans is C
Right answer is B
Hypoectectoid steel heated - above upper critical temp and cooled slowly
Hypereutectic steel heated. - above lower critical temp and cooled slowly
the hyper eutectoid steels are heated like wise where as the hypo is heated above the ac3 temp.