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首页> 外文会议>International Conference on Stress Evaluation Using Neutrons and Synchrotron Radiation; 20070924-26; Vienna(AT) >Experimental Investigation of Residual Stresses after Heat Treatment and Grinding Processes in the Production of Ball Bearing Rings
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Experimental Investigation of Residual Stresses after Heat Treatment and Grinding Processes in the Production of Ball Bearing Rings

机译：球轴承套生产中热处理和磨削过程后残余应力的实验研究

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Experimental investigation of residual stresses after heat treatment and grinding processes in the production of ball bearing rings has been carried out. The residual stresses were measured by X-ray diffraction method utilizing chromium radiation, which has an average penetration depth of 5 μm incident on 100Cr6 (AIS1-E52100) ball bearing steel. The process parameters of heat treatment and grinding processes were varied so as to represent the extreme values that can be applied in the respective processes. Hardness and percent retained austenite limit the heat treatment process parameters; while roundness, surface roughness and form the grinding process. Tensile surface residual stresses on the raceway of ball bearing rings changes to compression after grinding in both circumferential and axial directions. In grinding relatively higher compressive stresses were measured in axial direction compared to the circumferential direction. This experimental investigation also showed that the influence of heat treatment process parameters on the magnitude and distribution of residual stresses survived even after grinding process; i.e. heat treatment and grinding processes cannot be evaluated independently in process design for favourable residual stresses.
机译：在球轴承套圈的生产中，进行了热处理和磨削后的残余应力的实验研究。残余应力通过利用铬辐射的X射线衍射法测量，其平均入射深度为5μm，入射到100Cr6（AIS1-E52100）球轴承钢上。改变了热处理和研磨工艺的工艺参数，以代表可以在各个工艺中应用的极值。硬度和残余奥氏体百分数限制了热处理工艺参数；同时圆度，表面粗糙度并形成磨削过程。球轴承套圈的滚道上的拉伸表面残余应力在沿周向和轴向方向磨削后都变为压缩状态。在磨削中，在轴向方向上测量的压缩应力相对于圆周方向更高。该实验研究还表明，即使经过磨削工艺，热处理工艺参数对残余应力的大小和分布的影响仍然存在。即热处理和磨削工艺不能在工艺设计中独立评估以获得有利的残余应力。

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