Network optimisation information.
Hardening temperature and heat treatment deformation.
For the sake of production convenience, mold steel is required to relax the quenching temperature range as much as possible, especially in the use of flame heating for local quenching, due to its quenching temperature is difficult to accurately measure and control, so the mold steel is required to have a large range of quenching temperature.
42crmov steel ingot heat treatment, especially in the quenching, the mold requirements mold steel heat treatment deformation is small, especially for the complex shape of precision mold, quenching is difficult to trim, the degree of heat treatment deformation requirements are high, should be selected micro-deformation mold steel manufacturing, in order to ensure mold quality.
The sensitivity of oxidation decarburisation.
When the mold heating, if oxidation, decarburization phenomenon, will make asp mold steel hardness, wear resistance, use performance and life decline, therefore, the mold steel oxidation, decarburization sensitivity requirements are high. For high molybdenum content mould steel, due to the strong sensitivity of oxidation and decarburisation, special heat treatment is required, such as vacuum heat treatment, controlled atmosphere heat treatment, salt bath heat treatment, etc.
