用X射线衍射方法测定了形变强化圆锥滚子沿层深的残余应力分布、X射线半高宽和表面残余奥氏体量。结果表明,圆锥滚子强化表层存在残余压应力,残余压应力峰出现在距表面约200 μm处,峰值随强化时间延长而增大,强化16 h达最大,此后则减小;强化过程中滚子表面及次表面X射线半高宽减小,约在50 μm处有一极小值。

It has been performed to measure depth distributions of residual stresses and half width values of strengthened tapered rollers and retained austenite at the surface with X ray diffraction technique. The experiment results indicate that there are residual compressive stresses in strengthened surface layer of tapered rollers and residual compressive stress peak can be found at a depth of around 200 μm from surface,which increases with strengthening time and up to maximum when strengthening time is 16 h,decrease when strengthening time over 16 h. And half width values of the rollers at surface and subsurface decrease during strain strengthening,and there is a minimum at depth of 50 μm or so.