60CrMoV钢轧辊热处理后断裂分析  

Fracture analysis of 60CrMoV steel roller after heat treatment

作　　者：王书田[1] 刘霞 

机构地区：[1]包头职业技术学院,内蒙古包头014030 [2]内蒙古北方重工业集团有限公司中心实验室,内蒙古包头014030

出　　处：《金属热处理》2009年第12期104-106,共3页Heat Treatment of Metals

摘　　要：通过对60CrMoV钢轧辊热处理回火后断裂原因分析得出,轧辊断裂是在热处理残余应力作用下发生脆性断裂,钢中化学成分偏析和非金属夹杂物的聚集分布造成裂纹扩展;轧辊在原工艺基础上增加450℃补充回火4h后没有再出现开裂。Through the fracture analysis of 60CrMoV steel heat-treated roller,it is found that the residual stress after heat treatment causes the roller brittle fractare,and the chemical composition segregation and the aggregation of non-metal inclusions in the steel cause the crack propogation.It is possible by supplement tempering at 450 ℃ for 4 h to avoid cracking during heat-treatment.

关 键 词：60CrMoV轧辊钢 偏析 非金属夹杂物 残余应力 断裂 

分 类 号：TG162.6[金属学及工艺—热处理] TG111.91[金属学及工艺—金属学]