The use of quenching and tempering heat treatment does not require

Use pre-heat treatment for precision and complex molds. For example, PMS (1Ni3Mn2CuA1. If the hardness requirements are not too high, pre-heat-treated pre-hardened steel can be used to pre-heat the mold steel (such as 3Cr2Mo, 3CrMnNiMo steel) to reach the hardness when used (lower The hardness is 2535HRC, and the higher hardness is 4050HRC), and then the mold is processed and formed without heat treatment, so as to ensure the accuracy of the precision and complex mold. Age-hardening steel can be used for precision and complex molds. After the mold is processed and formed, the aging heat treatment is performed at about 500°C to obtain a higher hardness of 40~45HRC. We all know that the mold will deform after quenching.

The use of quenching and tempering heat treatment does not require high matrix hardness, and the precision and complex molds that require high surface hardness can be quenched and tempered after rough machining, and low temperature Plastic mould factory nitriding after finishing (500~550?C) , Because the mold nitriding temperature is low, there is no matrix structure phase change, and the furnace is cooled to room temperature, the cooling stress is also less, and the mold deformation is small.Mo) steel is a new type of age-hardening die steel. 1. No matter what method is adopted, the deformation is unavoidable. The hardness after solution quenching at 870?C is about 30HRC, which is convenient for machinery. The engineers of Shenzhen Mould Company share how to adopt the heat treatment process to reduce the heat treatment deformation of the mold? For precision and complex molds that must strictly control the amount of deformation The following methods can be used to control. Using age-hardening die steel.. 3. The mold deformation is small and only needs to be polished. It is an ideal steel for precision and complex molds