轴承外圈失效分析

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摘要:采用场发射扫描电镜观察、洛氏硬度检测、能谱分析及化学成分分析等方法,对轴承外圈进行断口分析,判断断口的断裂形式。结果表明:轴承外圈的洛氏硬度高于标准值,化学成分符合要求,断口具有脆性断裂特征,因此推断轴承外圈在外部应力的作用下发生脆性断裂。
关键词:断口分析;洛氏硬度;脆性断裂
Failure analysis of bearing outer ring
SHAN Chunyan1,2,ZENG Qingyu3,HU Zhi1,2,LIU Qi1,2,MAO Xiaojun4
1.Guizhou Material Industrial Technology Institute, Guiyang 550014, Guizhou, China
2.The National Composite Modified Polymer Material Engineering Technology Research Centere,
Guiyang 550014, Guizhou, China
3.China Zhenhua (Group) Xinyun Electronic Components Co. Ltd., Guiyang 550018, Guizhou, China
4.Guizhou Fengyang Hydraulic Co. Ltd., Guiyang 550000, Guizhou, China
Abstract: In this paper, field emission scanning electron microscope (SEM), Rockwell hardness test, energy spectrum analysis (EDS), chemical composition test and other detection methods are used to analyze the fracture of the bearing outer ring, and judge the fracture form. The results show that the Rockwell hardness of the bearing outer ring is higher than the standard value, the chemical composition meets the requirements, and the fracture has the characteristics of brittle fracture, so it is inferred that the bearing outer ring has brittle fracture under the action of external stress.
Keywords: fracture analysis;rockwell hardness;brittle fracture
1 序言
轴承作为机械设备中的关键部件,其运行状态关乎整个机械设备的正常运转[1-3]。(剩余2937字)