干磨和湿磨对42CrMo钢磨削强化的影响  

Impact of dry grinding and wet grinding on surface layer strengthening of 42CrMo steel

作　　者：刘克铭[1] 刘波[1] 马壮[1] 时海芳[1] 孙方红[1] 

机构地区：[1]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《兵器材料科学与工程》2012年第1期65-67,共3页Ordnance Material Science and Engineering

摘　　要：磨削淬火技术具有工程应用价值。在精密卧式磨床M7132A上,采用干磨和湿磨对42CrMo钢进行磨削淬火试验。研究表明,完全强化层的组织是以条片状马氏体为主的整合组织,强化层显微硬度在700HV以上,与基体相比提高了3倍。在相同磨削工艺下,湿磨的磨削淬火强化层厚度最大。Grind-hardening test under different cooling conditions （dry grinding, wet grinding） for 42CrMo steel was carried out on precision horizontal grinding machine M7132A. The studies show that the microstructure of fully strengthened layer is hybrid martensite, which is dominated by lath martensite. Microhardness of strengthened layer is above 700HV and increases three time than that of matrix. Under the same grinding technology, the thickness of grind-hardening strengthened layer under wet grinding 1S maximum.

关 键 词：磨削淬火 冷却条件 马氏体组织 表面强化 显微硬度 

分 类 号：TG156.33[金属学及工艺—热处理] TG580.64[金属学及工艺—金属学]