| Wear Status Monitoring of Oil Seal by Cobalt Element Concentration in Oil |
| Received:October 17, 2019 Revised:October 24, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.07.0541 |
| Key Words: oil seal；wear；failure；oil；cobalt element concentration；radial force |
| Author Name | Affiliation | E-mail | | YANG Jianfei* | CRRC Zhuzhou Electric Locomotive Institute Co.，Ltd | zhaominmin@gmeri.com | | LI Xiuzhen | CRRC Zhuzhou Electric Locomotive Institute Co.，Ltd | | | ZHAO Minmin | Guangzhou Mechanical Engineering Research Institute Co.，Ltd | | | WU Jun | Guangzhou Mechanical Engineering Research Institute Co.，Ltd | | | HUANG Le | Guangzhou Mechanical Engineering Research Institute Co.，Ltd | |
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| Abstract: |
| Cobalt element was added to the oil seal compound，and the oil seal bench test was carried out. The radial force of the oil seal before and after the test was measured and compared. The concentration of cobalt element in the oil under different wear conditions was obtained，and the relationship curve between
the concentration of cobalt element in the oil and the wear weight of the oil seal was established. The results showed that the radial force of the oil seal decreased with time，and it decreased greatly after the bench test due to the wear of the seal lip. The wear weight of the oil seal was almost linear with the concentration of
cobalt element in the oil，and the wear speed of the oil seal was faster at the beginning of the test，and then decreased gradually. |
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