Explanation

The process of using the residual heat of the white body of the quenched workpiece to reheat the quenched martensite structure is called self tempering. When the Ms point of steel product is very high, the martensite obtained by transformation at a higher temperature will occur in the subsequent cooling process; self tempering will also occur after heat transfer from other parts after rapid cooling of hardened parts of local hardening or case hardening workpiece to obtain martensite structure. Utilizing can simplify processes and save energy.

Classification