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.
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
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
cutting process
electrical steel
fatigue properties
laser cutting
wire cutting
fatigue life
