We can provide free samples . Please contact Email for any inquiries

Mold deformation after quenching, take deformation are unavoidable, but the control to strictly control the sophisticated mold deformation can be taken of the following methods.

1 transfer of heat treatment
Less demanding on the matrix hardness, surface hardness requirements of high precision and complex molds, transfer of heat treatment after taking mold roughing, finishing after low temperature nitriding process (500 to 550 degrees), due to low nitriding temperature of mold matrix organization, there is no phase transition, the other furnace cooling to room temperature and baked cooling stress is less mold deformation is small.

2 using the pre-heat treatment
Precision and complex molds, such as its hardness is not too high, can be pre-heat treatment of the pre-hard steel, die steel (such as 3Cr2Mo, 3CrMnNiMo steel) to pre-heat treatment, to use the hardness is reached (lower hardness of 25 ~ 35HRC higher hardness of 40 ~ 50HRC), then mold molding is no longer the heat treatment, in order to ensure the accuracy of sophisticated mold.

3 age-hardening mold steel
After age-hardening steel precision and complex molds can be used, such as PMS (1Ni3Mn2CuA1.Mo) steel is a new limitation die steel hardness after 870? C solid solution hardening of about 30HRC, ease of machining, mold processing, molding the heat treatment of about 500? C, you can get a higher hardness of 40 ~ 45HRC, mold deformation is small, only need to be polished, is ideal for sophisticated mold steel.