农用柴油机曲轴材料-42CrMo钢的磨削淬火试验研究  

Grinding-quenching Experimental Research on 42CrMo Steel Material of Agricultural Diesel Engine Crankshaft

作　　者：刘克铭[1] 马壮[1] 杨伟红[1] 刘波[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：《黑龙江农业科学》2011年第12期149-151,共3页Heilongjiang Agricultural Sciences

摘　　要：为了提高农用柴油机曲轴的强度,对曲轴材料42CrMo钢进行了磨削淬火试验,并进行了42CrMo钢的显微硬度试验及扫描电镜试验。结果表明:在磨削深度为0.1～0.6mm,调质态42CrMo钢试件表层均得到了显微硬度值高于510HV的淬硬层,最高硬度值为850HV。淬硬层表层由细小的板条状马氏体组成,浅表层由较粗大板条状马氏体组成,里层由较细小的板条状马氏体组成。说明对42CrMo钢的磨削淬火是可行的。In order to improve the strength of agricultural diesel engine crankshaft,experiments of grinding-quenching,microhardness and scanning electron microscope of crankshaft material 42CrMo steel were carried out.The results showed that when the grinding depth was in the range of 0.1~0.6 mm,the surface layers of 42CrMo steel specimens in the quenched and tempered state all appeared hardening layers whose microhardness value was higher than 510 HV,and the highest microhardness value was 850 HV.The surface layer of hardening layer was made up of fine lath martensite.The superficial layer of hardening layer was made up of coarser lath martensite.The internal layer of hardening layer was made up of the smaller lath martensite.The experimental results indicated that the grinding-quenching of 42CrMo steel was feasible.

关 键 词：曲轴 磨削淬火 显微硬度 马氏体 

分 类 号：TK425[动力工程及工程热物理—动力机械及工程]