Cr12型模具钢在生产上大量使用于制造各种冲压零件成形模、冲裁模等,经过下料→锻造→退火→机加工→淬、回火→精加工或再电火花加工等工序加工而成,其技术要求除了几何尺寸和硬度外,不允许存在裂纹等缺陷。但由于加工中诸多因素的影响,模具仍时常发生裂纹、早期磨损和冲后断裂等问题。通过对所存在的问题的原因、特征、原材料、锻造、热处理及金相等方面的综合分析,采取了一系 Cr12-type die steel in the production of a large number used in the manufacture of various stamping parts forming die, blanking die, after the blanking → forging → annealing → machining → quenching, tempering → finishing or re-EDM and other processes and processing Into, its technical requirements in addition to the geometric dimensions and hardness, the existence of cracks and other defects are not allowed. However, due to the processing of many factors, the mold is still often cracks, early wear and tear and other issues after the break. Through a comprehensive analysis of the causes of the problems, characteristics, raw materials, forging, heat treatment and gold, adopted a series