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一、前言我国模具钢材的消耗量很大,其中模具寿命低是主要的原因之一,而模具材料的性能则是影响模具寿命的主要因素。据统计,使模具失效的主要是开裂、折断和崩刃。而这些失效又与模具材料的强韧性有密切关系。我所结合机械工业部基础件第96项的要求,与大冶钢厂、本溪一钢厂等单位共同研制成功一种新型高强韧模具钢 LD,它具有强度高,韧性好,耐磨损的特点,而且具有良好的综合机械性能和加工工艺性能。经过几年来的生产应用,在冷镦、冷挤、冷冲、冷压和冷弯等几十种冷压模具上都获得了显著的使用效果。本文介绍在冷压模具方面的一部分应用实例。
First, the preface China’s consumption of mold steel is very large, of which the low mold life is one of the main reasons, while the mold material properties are the main factors affecting the life of the mold. According to statistics, the main failure of the mold is cracking, breaking and chipping. And these failures are closely related with the toughness of the mold material. I combined the Ministry of Machinery Industry, the basic requirements of item 96, and Daye Steel, Benxi a steel mill and other units jointly developed a new type of high strength and toughness die steel LD, which has high strength, toughness, wear-resistant Features, but also has a good overall mechanical properties and processing technology performance. After several years of production and application, in the cold heading, cold extrusion, cold red, cold and cold-formed dozens of cold-pressed molds have obtained significant results. This article describes some of the application examples in the cold press mold.