(1), reasonable selection. For precision molds should choose a good material micro-deformation of the mold steel (such as air quenching steel), severe segregation of carbide carbide mold steel should be carried out on the fair and can not be large and can not be cast steel mold solid solution double fine heat treatment .


    (2), the mold structure design should be fair, the thickness should not be too poor, shape to symmetry, deformation of the larger mold to grasp the deformation law, set aside allowance for large, sophisticated complex mold can be combined structure.


    (3), sophisticated complex mold to be pre-heat treatment, eliminating the mechanical processing of residual stress generated.


    (4), reasonable choice of heating temperature, control the heating rate, for precision molds can be taken to slow heating, preheating and other methods of equilibrium heating to reduce the mold heat treatment deformation.


    (5), to ensure that the hardness of the mold conditions, try to use pre-cooling, graded cooling quenching or quenching process.


    (6), the precision of complex molds, the premise of the permit, try to use vacuum hardening and quenching after the cryogenic treatment.


    (7), for some sophisticated mold can be used pre-heat treatment, aging heat treatment, quenching and tempering treatment of nitrogen to control the accuracy of the mold.


    (8), in the repair mold trachoma, pores, wear and other defects, the choice of cold welding and other heat-affected small repair equipment to avoid the repair process of deformation.