Question

High carbon Steel ka lower critical tapman kitna hota hai

Answer 1

Answer:

According to me,the lower critical temperature of high carbon steel

lower critical temp below which pearlite starts to form.(723°C)

Explanation:

The lower critical temp below which pearlite starts to form.(723°C)

Heating is carried out (20°C) above the upper critical temperature of steel in case of hypo-eutectoid steel and same degree above the lower critical point of steel in case of hyper- eutectoid steel.

The most commonly used operations of heat treatment for iron and steel are: 1. Annealing

2. Normalising

3. Hardening

4. Tempering

5. Carburising (Case-Hardening)

6. Cyaniding

7. Nitriding

8. Induction Hardening

9. Flame-Hardening.

The former consists of ferrite and pearlite while the latter consists of pearlite and cementite.