The purpose of tempering 30CrMo steel

Quenching can improve the plasticity and toughness of 30CrMo steel and reduce its brittleness, but it often inevitably reduces the strength and hardness of 30CrMo steel. One of the purposes of tempering is to reduce or eliminate the residual stress caused by quenching, which is especially important for stabilizing the dimensions of 30CrMo steel products.

Generally speaking, it is dangerous and not allowed to put quenched 30CrMo steel parts into use without tempering. Some large steel parts or complex parts with high carbon content explode suddenly while waiting for tempering after quenching, which illustrates the importance of tempering and tempering in time.

It can be carried out in a wide temperature range, and the properties of 30CrMo steel can also be changed in a wide range. Tempering is an effective means to adjust the properties of 30CrMo steel parts to meet the requirements of use.