一、高速钢冷作模具的热处理工艺 为了保证高速钢刀具的红硬性,必须经过高温淬火,560℃三次回火,产生二次硬化效应。 为了提高强度,改善韧性,减少模具折断,提高高速钢冷作模具寿命,近来,工厂均成功地采用低温淬火工艺,如对冷冲压模具W6Mo5Cr4V2高速钢采用低温淬火 First, the high-speed steel cold-working die heat treatment process In order to ensure high-speed steel cutting tool red hardness, must be quenched at high temperature, 560 ℃ three times tempering, resulting in secondary hardening effect. In order to improve strength, improve toughness, reduce die breakage and improve the service life of high-speed cold-working die, the factory has recently successfully used low-temperature quenching process, such as cold stamping die W6Mo5Cr4V2 high-speed steel using low temperature quenching