| TANG Mingyi,WANG Yiran,ZHANG Yize,MA Ming.Surface Modification Technology of Motor Brush Based on Highly Oriented Pyrolytic Graphite (HOPG)[J],53(21):6-13 |
| Surface Modification Technology of Motor Brush Based on Highly Oriented Pyrolytic Graphite (HOPG) |
| Received:November 05, 2024 Revised:November 08, 2024 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2024.21.002 |
| KeyWord:friction and wear brush micromotor arc erosion surface modification motor brush highly oriented pyrolytic graphite (HOPG) |
| Author | Institution |
| TANG Mingyi |
Tsinghua University, Beijing , China |
| WANG Yiran |
Tsinghua University, Beijing , China |
| ZHANG Yize |
Tsinghua University, Beijing , China |
| MA Ming |
Tsinghua University, Beijing , China |
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| Abstract: |
| In modern industry, frictional consumption accounts for approximately one-third of primary energy. By developing superlubricity surface engineering technology, it is possible to reduce frictional energy loss, and provide strong supports for China to achieve its dual carbon goals. Among them, brush micromotors are widely used in household appliances, robots, and automation equipment due to their simple structure, easy control, and good load characteristics. Currently, the wear between the brush and the commutator has become a bottleneck for the performance and lifespan of brush micromotors. The phenomenon of arc erosion significantly exacerbates the wear during motor operation, leading to a decrease in performance and a reduction in service life of motors. This study, targeting the friction and wear issues between the brush and the commutator in brush micromotors, a motor performance testing system has been established. By exploring the actual working conditions of the motor, the work aims to improve the wear between the brush and commutator during actual operation. This paper proposed a surface modification technology based on highly oriented pyrolytic graphite (HOPG). By optimizing the contact material between the brush and commutator, a scanning electron microscopy was used to characterize the failed brush to investigate whether the application of HOPG could improve the wear resistance of the brush. Experimental results show that the application of highly oriented pyrolytic graphite effectively suppresses arc erosion, improves the contact state, and increases the working lifespan of the motor. This paper provides a new solution for enhancing the performance and lifespan of brush micromotors, with significant practical application value and potential for promotion. |
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