在磨削轴承外径的过程中,由于多种原因,经常出现外径过磨而造成废品。为挽救这些废品,大多采取电镀硬铬或深冷处理来解决,但是这些工艺较复杂,成本也高。能否用人工时效方法促使残留奥氏体转变成马氏体,借助比容的差别补偿轴承外圈尺寸的过磨使之达到工艺的要求呢?实践证明是行之有效的。 In the process of grinding the outer diameter of the bearing, due to a variety of reasons, it often causes the outer diameter to be over-worn to cause the scrap. To save these waste, most of the hard chromium plating or cryogenic treatment to solve, but these processes are more complex and costly. Can artificial aging method to promote the retained austenite into martensite, with the help of the difference between the specific volume compensation bearing outer ring over the mill to meet the requirements of the process? Practice has proved to be effective.