5CrNiMo用于冷作模具的渗碳淬火特性研究  

Research on Carburization and Quenching Feature of 5CrNiMo Used for Cold Work Dies

作　　者：贾慈力[1] 沈耀仁[1] 钱士强[1] 李永平[1] 

机构地区：[1]上海工程技术大学航空运输学院,上海201620

出　　处：《热加工工艺》2014年第12期136-138,共3页Hot Working Technology

基　　金：上海市地方高校"十二五"内涵建设项目(B-8932-12-0131;B-8932-13-0127);上海高校一流学科(培育)项目(B-8938-12-010505);上海市科委科研计划项目(11DZ1110400);上海市经信委引进技术吸收与创新计划项目(2010CH-005)

摘　　要：研究了热作模具钢5CrNiMo在渗碳淬火处理工艺下的表面组织、冲击韧度、硬度和耐磨性等性能,并与进口冷轧精整辊轮试样作了对比分析。实验结果和生产实际表明,5CrNiMo通过高温气体渗碳、淬火、高温回火,可获得较好的使用性能,在保持高韧性的基础下,可获得比常规热处理工艺高的硬度和耐磨性,适合于制造要求韧性高、承载大、耐磨损的精整辊轮等冷作模具。Performances about surface structure, impact toughness, hardness and wear resistance of the 5CrNiMo hot work die steel after carburized and quenched were analyzed, which was compared with an imported cold-rolled finishing rollers pecimen. Both experiment results and actual production show that 5CrNiMo can obtain a better application performance after high temperature gas carburization, quenching and high temperature tempering. Compared with traditional heat treatment processes, this treatment process can provide a higher hardness and wear resistance with remaining a good toughness, which is suitable for manufacturing cold work dies with the requirements of high toughness, wear resistance and high working load such as finishing rollers.

关 键 词：5CrNiMo 渗碳淬火 韧性 冷轧精整辊轮 

分 类 号：TG156.81[金属学及工艺—热处理]