Define heat treatment. Give any two purposes of heat treatment.

Define heat treatment. Give any two purposes of heat treatment.
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1 Answer

Answer :

Heat treatment:- The process of heating steel to a certain high temperature and then cooling it at a controlled rate in order to develop certain physical properties without changing its chemical composition is known as heat treatment of steel. 

Purpose of heat treatment:-

1) To change the structure of steel.

2) To increase surface hardness.

3) To increase resistance to heat & corrosion.

4) To alter the magnetic properties of steel.

5) To vary strength and hardness.

6) To make steel easily workable.

7) To remove trapped gases.

8) To improve machinability and mechanical properties.


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