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What is heat treatment and why is it done?
Heat treatment can be defined as a combination of processes or operations in which the heating and cooling of a metal or alloy is done in order to obtain desirable characteristics without changing the compositions.
Some of the motives or purpose of heat treatment are as follows :
In order to improve the hardness of metals.
For the softening of the metal.
In order to improve the machinability of the metal.
To change the grain size.
To provide better resistance to heat, corrosion, wear etc.
Heat treatment is generally performed in the following ways :
Normalizing
Annealing
Spheroidising
Hardening
Tempering
Surface or case hardening
Some of the motives or purpose of heat treatment are as follows :
In order to improve the hardness of metals.
For the softening of the metal.
In order to improve the machinability of the metal.
To change the grain size.
To provide better resistance to heat, corrosion, wear etc.
Heat treatment is generally performed in the following ways :
Normalizing
Annealing
Spheroidising
Hardening
Tempering
Surface or case hardening