| Citation: | NIU Rongjun，HAN Zhengjie，WANG Yufei，et al.Wear life analysis of angular contact ball bearing in high temperature environment［J］.Journal of Aerospace Power，2022，37（8）：1780‑1792. doi: 10.13224/j.cnki.jasp.20210466
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In view of the change of bearing material properties and lubrication state under high temperature environment,the bearing wear was aggravated and the accuracy was lost prematurely.Firstly,the friction and wear tests of bearing materials under high temperature environment were carried out to obtain the wear coefficient of the materials.On this basis,the wear model of high temperature angular contact ball bearing was established by considering the effects of temperature,lubrication and bearing material properties on bearing wear performance.Through numerical solution,the effects of load parameters and structural parameters on the wear performance of the bearing were discussed,and the wear life of the bearing was evaluated.The results showed that: for the bearing material non magnetic alloy GH05,the wear coefficient was 2.5×10-7 mm2/N at 300 ℃.With the increase of load,speed and temperature,the wear rate of inner and outer rings of bearing increased constantly.The wear rate of the inner ring was greater than that of the outer ring.The wear characteristics of the inner ring determine the wear life of the bearing; load and speed are the main factors of determining the bearing wear life.In addition,the main structural parameters of the bearing had an important impact on the wear life.The bearing wear life can be improved through structural optimization.
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