Abstract:

By analyzing the causes of thermal bimetal residual stresses and its influence on the product,the method of high temperature heat treatment to eliminate the residual stress of the thermal bimetallic is studied.It is concluded that the residual stress and heat treatment cycles has certain negative correlation relationship,and the calculation formula for reference is established.The theoretical formula is further tested to verify its high effectiveness.

Key words: thermal bimetal, high temperature heat treatment, residual stress, negative correlation