应用铁谱分析研究滚动轴承疲劳失效

本研究应用铁谱分析技术对滚动轴承疲劳失效的全过程进行监测,探索了成劳失效过程的磨损规律,铁谱分析表明,在滚动轴承磨合期产生大量大尺寸的条状、块状、球状及切削状磨损颗垃,主要来源于软钢制造的保持器;轴承接近疲劳时,磨损颗粒大量增加,I_G和I_A值突然连续上升,说明疲劳已开始。有的轴承疲劳前出现大量的小球状颗粒,可视为疲劳剥落的先兆。

Investigation Process of Fatigue Failure of Rolling Bearing by Ferrographical Analysis

This paper deals with wearing for process of fatigue failure of rolling bearing by using ferrographical analysis through endurance tests. It is shown that a lot of longer slip particles, debris, spheric wear particles and cutting wear particles mainly come from the soft steel cages, in runing-up period. During the analysis, it is found with the approaching of the fatigue period, wear particles increase a great deal and with the sudden continuous rise in I_o and I_A, the fatigue period begins. It is alos discovered that there appear a great deal of spheric wear particles, which might be considered as a presage of fatigue spalling of the rolling bearing