磨削用量对42CrMo钢淬硬层残余应力的影响  

Effect of grinding parameters on residual stress of hardened layer of 42Cr Mo steel

作　　者：张静 裴宏杰[1] 王贵成[1] Zhang Jing;Pei Hongjie;Wang Guicheng(School of Mechanical Engineering,Jiangsu University,Zhenjiang Jiangsu 212000,China)

机构地区：[1]江苏大学机械工程学院

出　　处：《金属热处理》2018年第9期238-241,共4页Heat Treatment of Metals

基　　金：国家自然科学基金(51075192)

摘　　要：磨削淬硬是集成表面淬火与磨削加工的制造技术,衡量其表面质量的主要特征参数是残余应力。对42Cr Mo钢进行了平面磨削加工试验,分别研究了磨削速度vs、磨削深度ap、进给速度vw对残余应力σx的作用,初步总结了vs、ap、vw对残余应力的影响规律,揭示了淬硬层残余应力与显微硬度分布之间的关系。试验研究发现,当vs、ap的值增加,vw减少的时候,磨削淬硬层表面残余应力σx的值会随之减少,但最大残余应力和其作用的深度却随之增加。本研究为主动控制磨削淬硬加工质量提供了理论与试验依据。Grind-hardening is an integrated manufacturing technology of surface quenching and grinding process. The residual stress is one of the main characteristic parameters of grinding-hardened surface quality. On the basis of the surface grinding-hardening test,effects of the grinding speed vs,the grinding depth apand the feed speed vwon residual stress σxin grinding-hardened layer of 42 Cr Mo steel were systematically studied. Basic regularities of above-mentioned grinding parameters on residual stress and the relationship between residual stress and microhardness distribution of the hardened layer are generally revealed. The results show that compress residual stresses of the surface decrease with the grinding speed and grinding depth increasing or feed speed decreasing,whereas the maximal compress residual stresses and the action depth of stress rise accordingly. This study provides the theoretical and experimental foundation for actively controlling grinding-hardened surface quality.

关 键 词：磨削淬硬 显微硬度 残余应力 磨削用量 

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]