The outside diameter surface of a roller of tapered roller bearing peels off in the shape of a straight line.The causes of bearing failure are determined by means of chemical composition analysis,metallographic structure examination and Rockwell hardness inspection.The results show that there are raw material cracks in the outside diameter of that roller.When the bearing is running,the cracks grow under the function of cyclic stresses,finally the roller is peeling.
关键词
直线剥离/脱碳层/原材料裂纹/化学成分/金相组织
Key words
straight-line peeling/decarburized layer/raw material crack/chemical composition/metallographic structure
维普
万方数据