耐蚀塑料模具钢预硬化工艺及组织研究  

Study on the Pre-Hardening Process and Microstructures of Corrosion Resistant Plastics Die Steel

作　　者：王勇胜 金维松 孙盛宇 付博 刘景欣 Wang Yongsheng;Jin Weisong;Sun Shengyu;Fu Bo;Liu Jingxin(RD center of Dongbei special steel Group,Dalian,Liaoning 116105,CHN;Chief engineer's office of Dongbei special steel Group,Dalian,Liaoning 116105,CHN)

机构地区：[1]东北特殊钢集团股份有限公司技术中心,辽宁大连116105 [2]东特股份总工办,辽宁大连116105

出　　处：《模具制造》2021年第8期79-82,共4页Die & Mould Manufacture

摘　　要：分析了塑胶模具钢的行业现状及4Cr13型耐蚀塑料模具钢的特性,对不同热处理工艺的4Cr13模具钢的显微组织、硬度及成分进行了对比分析。结果显示,模铸的4Cr13钢经在线预硬、一次回火后,显微组织呈条带状分布,其原因为钢中成分偏析导致,经二次回火后可减轻。另外,对不同冶炼状态下的4Cr13模具钢组织进行了对比分析,结果显示,电渣钢经二次回火后,组织细致均匀,可用于具有高要求的塑料模具制造。The present situation of mold industry and the corrosion resistant plastic mold steel 4Cr13 are analyzed,the microstructures,hardnesses and chemical compositions of different heat treatment methods are compared.Result shows that,after online pre-hardening process and once tempered,the microstructures of ingot cast 4Cr13 steel are distribute on band-pattern,caused by chemical composition segregation,which could be reduced by twice temper treatment.What's more,the microstructures of mold steel 4Cr13 of different smelt method are compared too.Result shows that,after ESR treatment,the microstructures are fine and uniform,the steel can be used on the manufacture of high quality plastic die.

关 键 词：预硬化 显微组织 耐蚀塑料模具钢 4Cr13 

分 类 号：TG162[金属学及工艺—热处理] TG142[金属学及工艺—金属学]