磨削淬火对60Si2Mn钢性能的影响  

Effect of Grinding Hardening stay on 60Si2Mn Steel

作　　者：吴良芹[1] 

机构地区：[1]沙洲职业工学院机电工程系,江苏张家港215600

出　　处：《机械制造与自动化》2015年第2期76-77,85,共3页Machine Building & Automation

基　　金：江苏省高等职业院校高级访问工程师计划资助项目(2013)

摘　　要：采用刚玉砂轮在普通平面磨床上对60Si2Mn钢进行了磨削硬化,研究其硬化层组织及变化规律。结果表明:表面磨削强化工艺可获得760HV以上的高硬度淬硬层,最大淬硬层深达2.0 mm;磨削淬火加热速度极快,细化了奥氏体晶粒,淬火马氏体组织非常细小,得到板条马氏体和片状马氏体的混合组织。The grind-hardening of steel 60Si2Mn is carried out on a conventional surface grinder by use of alumina grinding wheel and the microstructures of hardened layer are investigated. The results show that the micro-hardness of the grind-hardening layer is more than 760HV, and the thickness of grinding hardened martensite layer is up to 2.0 mm. Due to the fast speed of grinding harden- ing refines the austenite grain size and quenched martensitic microstructure are refined,and conformity microstructure of lathmarten- site and plate martensite is obtained.

关 键 词：磨削 表面硬化 马氏体 维氏硬度 

分 类 号：TG580.6[金属学及工艺—金属切削加工及机床]