residual stress in surface

In order to strengthen anti fatigue of cold worked hole, it is necessary to control the magnitude and distribution of the surface residual stress and strain.

为了使冷挤压孔真正起到抗疲劳增寿效果，有效控制孔表面残余应力大小及其分布是至关重要的。

The production mechanism of the surface residual stress producing in grinding process is the combined effect on extrusion stress and the cutting stress and the thermal load.

在磨削加工过程中产生表面残余应力，其产生机理是磨粒刃作用引起的挤压应力和切削应力及热应力的综合作用效应。

The effects of cutting speed and feed on residual stress of workpiece machined should be studied to improve surface quality in machining.

在切削加工中，为了提高已加工工件的表面质量，需要研究切削速度和进给量对已加工工件残余应力的影响规律。