加工方式对无取向电工钢疲劳性能的影响  

Influence of the Cutting Process on the Fatigue Properties of Non-oriented Electrical Steels

作　　者：杜丽影 薛欢[1] 李荣锋[1] 刘冬[1] 余立[1] 彭志英[1] 

机构地区：[1]武钢研究院,湖北武汉430080

出　　处：《武汉工程职业技术学院学报》2015年第4期29-31,共3页Journal of Wuhan Engineering Institute

摘　　要：以30WGP1600无取向电工钢为研究对象,通过扫描电镜、X射线衍射仪等设备,探讨了线切割和激光切割加工方式对电工钢疲劳寿命的影响及其原因,结果表明:激光切割加工方式大幅提高了材料的疲劳寿命。其主要原因由于激光切割试样边部产生薄的硬化层,并对试样表面引入较大的残余压应力,且上下表面应力比的绝对值较小。The influence of laser cutting and using Wire Electric Discharge Machining on fatigue life of30WGP1600non-oriented electrical steels was studied by means of SEM and X-ray diffractometer,and the difference of fatigue life caused by difderent cutting processes has also been discussed.The result showed the fatigue life of 30WGP1600 electrical steels with laser cutting greatly enhanced due to cut edge hardened layer and a rather large surface residual compression stress and smaller surface stress ratio caused by laser cutting.

关 键 词：加工方式 电工钢 疲劳性能 激光切割 线切割 疲劳寿命 

分 类 号：TM275[一般工业技术—材料科学与工程]