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模具,尤其是冲裁和挤压模具,在使用中频繁地受工作材料的摩擦磨损,失去尺寸精度和表面光泽而失效。对这类以磨损失效为主要特征的模具,国内外广泛采用高碳高铬系合金工具钢,有时也选用高速钢制作。然而随着生产率的提高和使用条件日益苛刻,这类钢的耐磨性仍不能满足使用要求。针对这种情况,我们和大冶钢厂合作开发出一种新型耐磨冷作模具钢9Gr6W3Mo2V2(简称 GM 钢)。GM 钢的成分设计综合考虑了硬度、强度和韧性对磨损特性的影响,使试验钢的硬化能力接近高速钢而韧性保持或超过高碳高铬工具钢的水平
Molds, especially blanking and extrusion dies, are frequently subject to frictional wear of the working material during use, losing dimensional accuracy and surface gloss and failing. To such failure-based wear and tear as the main features of the mold, widely used at home and abroad high-carbon high-chromium alloy tool steel, and sometimes also used high-speed steel production. However, with the increasing productivity and the increasingly harsh conditions of use, the wear resistance of such steel still can not meet the requirements. In response to this situation, we and Daye Steel to develop a new type of wear-resistant cold work die steel 9Gr6W3Mo2V2 (referred to as GM steel). The compositional design of GM steel takes into account the influence of hardness, strength and toughness on the wear characteristics so that the hardenability of the test steel is close to that of high-speed steel and its toughness is maintained at or above the level of high-carbon high-chromium tool steel