近年来,随着少无切屑加工工艺的推广,压力加工生产日趋于自动化、被加工材料的高强度化和工件的大型化,因此要求提供大量经济耐用的模具,国外材料与热、表处理工作者为此进行了不懈的努力。在模具材料方面,发展性能优异的新型模具钢;积极采用马氏体时效钢;注意发展低钨低铬模具钢,以便在保证使用性能的前提下节约贵重合金元素;并扩大使 In recent years, with the promotion of less non-chip processing technology, the pressure processing production is becoming increasingly automated, the processing of materials and large-scale strengthening of the workpiece, requiring a large number of economic and durable molds, foreign materials and heat, To this end made unremitting efforts. In the mold materials, the development of new mold steel performance; active use of martensitic aging steel; pay attention to the development of low-tungsten low-chromium die steel, in order to ensure the use of performance under the premise of saving precious alloying elements;