喷丸显著提高齿轮抗弯疲劳强度的事实,已经得到证实,并在工业部门中应用。但是,喷丸对接触疲劳寿命的影响是否有利,仍有争议。大家知道,喷丸能强化表层,给表层带来很大的残余压应力,同时也引起表面形貌的某些改变。研究这些变化对渗碳钢接触疲劳性能的影响是很有必要的。 The fact that shot peening significantly improves the flexural fatigue strength of gears has been demonstrated and used in the industrial sector. However, the impact of shot peening on the contact fatigue life is still favorable and controversial. We all know, shot peening can strengthen the surface, to the surface to bring a lot of residual compressive stress, but also caused some of the surface topography changes. It is necessary to study the effects of these changes on the contact fatigue properties of carburized steels.