The heat-treatment process of any kind of steel is very critical and important.One cannot get the desired results, until and unless heat treatment is done properly.
Hardening temperature,tempering temperature,cooling period,soaking time,etc. are a number of factors which if not maintained properly, the desired hardness and physical properties cannot be attained.
In spring steel strips, the required hardness of the finished components varies from 40HRC to 55HRC. This can be attained in the same material , by changing the cycle of heat treatment.
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