车削42CrMo钢刀具磨损试验研究  

Experimental study on tool wear during turning 42CrMo steel

作　　者：曾祥录[1] 梁军华[1] 韩俊峰[1] ZENG Xiang-lu;LIANG Jun-hua;HAN Jun-feng(Sichuan Engineering Technical College,Deyang 618000,China)

机构地区：[1]四川工程职业技术学院,四川德阳618000

出　　处：《粉末冶金工业》2020年第5期65-68,共4页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51775452);四川省教育厅2018年度科研项目(18ZA0309);德阳市2018年科技计划项目(2018SZY113)。

摘　　要：本试验在一定切削条件下对42CrMo钢进行干切削,研究刀具累计加工1035 s过程中前后刀面的磨损形貌。试验结果表明:累计加工时间T从0增加到1035 s的过程中,刀具前刀面参与切削的区域亮度增加,磨损区域增大;当加工时间T为1035 s时,刀具前刀面磨损明显,出现颜色较深面磨损区域、亮度较高的部分刀具涂层材料磨损区域、磨粒磨损明显的磨损区域。加工时间T从0增加到435 s的过程中,刀具后刀面出现明显的磨损带,涂层材料磨损带逐渐增大。加工时间T从435 s增加到1035 s的过程中,磨损带缓慢增大,出现基体磨损现象,随着磨损时间延长,基体磨损逐渐增大。当加工时间T从48 s增加到1035 s,已加工表面粗糙度Ra由3.46μm逐渐增大到3.91μm。In this experiment,42 CrMo steel was cutted under certain cutting conditions,and the wear morphology of the tool rake and tool flank surfaces during 1035 s machining was studied.The results show that the brightness of the cutting area and the wear area of the tool rake face increase when the cumulative processing time T increases from 0 to 1035 s.When the processing time T is at 1035 s,the tool rake face wear is obvious,and there are dark wear area,high brightness part of tool coating material wear area and obvious abrasive wear area.When the processing time T increases from 0 to 435 s,obvious wear band appears on the tool flank face,and the wear band of coating material increases gradually.When the processing time T increases from 435 s to 1035 s,the wear band increases slowly and the tool substrate material wear occurs.With the increase of wear time,the tool substrate material wear increases gradually.When the processing time T increases from 48 s to 1035 s,the surface roughness Ra increases from 3.46μm to 3.91μm.

关 键 词：车削 42CrMo 磨损过程 刀具磨损形貌 表面粗糙度 

分 类 号：TG71[金属学及工艺—刀具与模具] TG51