This paper analyses the burn problem produced from highspeed crush grinding of the bearing outer ring raceway. And a solution is presented, then good results are achieved by practical application.

本文对高速切入磨削轴承外圈沟道所产生的烧伤现象进行分析和探讨，并提出了具体的解决方法，在实践中取得了良好的效果。

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In order to analyses the influence and solve the problem, this paper introduces three different ways: semi-autogenous grinding, washing ore and the crush equipment upgrade.

介绍了矿石泥化对破磨工艺的影响，以及矿石泥化问题的三种解决方案：（半）自磨工艺、洗矿工艺和破碎设备升级改造。

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