42CrMo圆钢拉拔开裂原因分析  

Cause Analysis of Drawing Cracking of Round Steel 42CrMo

作　　者：董凤奎 杨明梅 龙慧芝 黄德伟 DONG Feng-kui;YANG Ming-mei;LONG Hui-zhi;HUANG De-wei(Baowu JFE Special Steel Co.,Ltd.,Shaoguan,Guangdong,512123,P.R.China;Baowu Grounp Guangdong Shaoguan Iron and Steel Co.,Ltd.,Shaoguan,Guangdong,512123,P.R.China)

机构地区：[1]宝武杰富意特殊钢有限公司,广东韶关512123 [2]宝钢集团广东韶关钢铁有限公司,广东韶关512123

出　　处：《南方金属》2025年第2期87-89,共3页Southern Metals

摘　　要：针对42CrMo圆钢拉拔开裂的问题,通过使用直读光谱仪(OES)、光学显微镜(OM)、扫描电子显微镜(SEM)等观察分析手段,对缺陷试样进行了化学成分检测、金相检测、扫描电镜分析等。结果表明:拉拔过程中润滑不良,导致钢材表面产生横向裂纹,破坏了基体的连续性,严重降低了钢材的拉拔抗力,是42CrMo圆钢拉拔开裂的主要原因。In order to solve the problem of drawing cracking of round steel 42CrMo,the chemical composition,metallography and SEM of the defective specimens were detected by optical emission spectrometer(OES),optical microscope(OM)and scanning electron microscope(SEM).The results show that the poor lubrication during the drawing process leads to transverse cracks on the surface of the steel,which destroy the continuity of the matrix and seriously reduce the drawing resistance of the steel,which is the main reason for the cracking of the round steel.

关 键 词：42CRMO钢 拉拔开裂 加工硬化 横向裂纹 

分 类 号：TG142.1[一般工业技术—材料科学与工程]