轴承钢中碳化物的形态分布及颗粒大小严重地影响滚动轴承的性能及使用寿命。文献[1]报导,两组轴承试样,一组碳化物平均直径为1.4μm(最大直径为2.7μm)而另一组平均为0.56μm(最大尺寸到1.5μm),热处理后得到相同的硬度,较细的碳化物一组试样采用了较低的加热温度,两组试样在相同的回火工艺下回火。这样,两组试样在大约相同的基体及含碳量的情况下,细碳化物轴承平均使用寿命为粗碳化物的2.5倍。据日本与瑞典轴承的淬火组织比较发现,瑞 Bearing steel carbide morphology and particle size distribution of a serious impact on rolling bearing performance and service life. The literature [1] reported that for the two bearing samples, one set of carbides had an average diameter of 1.4 μm (maximum diameter of 2.7 μm) and the other set an average of 0.56 μm (maximum dimension to 1.5 μm), giving the same hardness after heat treatment , A group of finer carbide samples using a lower heating temperature, two sets of samples in the same tempering tempering process. In this way, the average service life of the fine carbide bearing is 2.5 times that of the coarse carbide in both sets of samples with about the same matrix and carbon content. According to Japan and Sweden bearing hardened organization found that Switzerland