专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明授权

US6053991A Production of cold working tool steel 失效
标题翻译：生产冷作工具钢
公开(公告)号：US6053991A
公开(公告)日：2000-04-25
申请号：US86487
申请日：1998-05-29
申请人： Daien Yokoi , Nobuhiro Tsujii
发明人： Daien Yokoi , Nobuhiro Tsujii
IPC分类号： C21D6/00 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/26 , C21D6/02
CPC分类号： C22C38/24 , C21D6/002 , C22C38/18 , C22C38/22 , C22C38/26
摘要： Disclosed are a cold working tool steel suitable for plastic cold working tools used under severe service conditions, such as forming dies, forming rolls, and form rolling dies, and a process for producing the same. The cold working tool steel has wear resistance and tensile compression fatigue strength and at the same time can provide improved die life. The cold working tool steel is characterized by comprising by weight 0.65 to 1.3% of carbon, not more than 2.0% of silicon, 0.1 to 2.0% of manganese, 5.0 to 11.0% of chromium, 0.7 to 5.0%, in terms of molybdenum equivalent (molybdenum+tungsten/2), of at least one member selected from molybdenum and tungsten, 0.1 to 2.5%, in terms of vanadium equivalent (vanadium+niobium/2), of at least one member selected from vanadium and niobium, and optionally 0.010 to 0.10% of sulfur with the balance consisting of iron and unavoidable impurities, an M.sub.7 C.sub.3 carbide having a grain diameter of 5 to 15 .mu.m being present in a percentage area of 1 to 9%. The process is characterized by comprising the steps of: providing a steel product having the above chemical composition; and tempering the steel product at a temperature of 150 to 500.degree. C., preferably 150 to below 450.degree. C.
摘要翻译：公开了一种适用于在严酷使用条件下使用的塑料冷加工工具的冷加工工具钢，例如成形模，成型辊和成型轧模，及其制造方法。冷加工工具钢具有耐磨性和拉伸压缩疲劳强度，同时可以提供更好的模具寿命。冷加工工具钢的特征在于，以钼当量计，重量为0.65〜1.3％的碳，不超过2.0％的硅，0.1〜2.0％的锰，5.0〜11.0％的铬，5.0〜11.0％（钼+钨/ 2），至少一种选自钼和钨的成分，选自钒和铌中的至少一种的钒当量（钒+铌/ 2）为0.1至2.5％，以及任选的 0.010〜0.10％的硫，余量由铁和不可避免的杂质构成，粒径为5〜15μm的M7C3碳化物以1〜9％的比例存在。该方法的特征在于包括以下步骤：提供具有上述化学组成的钢产品; 并在150〜500℃，优选150〜450℃的温度下回火钢产品。

IPRDB

热门服务

关于我们

友情链接

联系方式