트라이볼로지 관점에서 철도차량의 경량 제동 디스크와 라이닝의 특성 평가
Characteristics Evaluation of Light Brake disc and Linning for Railway Vehicle In Terms of Tribology
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초록
The brake disc materials for railway vehicle have been mainly used cast-iron. The brake disc and pad should be light, resist to a thermal crack and absorb enough friction energy. In order to satisfy this requirement, aluminum alloy brake disc for railway vehicle has been newly developed. The aluminum itself has not been considered the friction material for railway vehicle. However, in the case of aluminum composite with dispersed ceramic particles, friction characteristics, resistance to wear and heat are much improved. In the present study, aluminum composite brake disc of 20% ceramic particle and three kinds of organic pads have been tested in dynamometer. The results show that Al MMC brake disc and pad have good friction coefficient and wear rate, and thermal cracks in brake disc have not been initiated. Also, the Al MMC brake disc can be applied to railway vehicle of 150 km/h.
Abstract
The brake disc materials for railway vehicle have been mainly used cast-iron. The brake disc and pad should be light, resist to a thermal crack and absorb enough friction energy. In order to satisfy this requirement, aluminum alloy brake disc for railway vehicle has been newly developed. The aluminum itself has not been considered the friction material for railway vehicle. However, in the case of aluminum composite with dispersed ceramic particles, friction characteristics, resistance to wear and heat are much improved. In the present study, aluminum composite brake disc of 20% ceramic particle and three kinds of organic pads have been tested in dynamometer. The results show that Al MMC brake disc and pad have good friction coefficient and wear rate, and thermal cracks in brake disc have not been initiated. Also, the Al MMC brake disc can be applied to railway vehicle of 150 km/h.
참고문헌 (6)
- O.Hideyuki, "Development of Aluminum Alloy Brake Disc", Kawasaki Heavy Industries. Technical Review, 34, pp.110~116 (2002)
- T.Tsujimura, "Development of Aluminum Alloy Composite Brake Disk for of Rolling Stocks", Quarterly Report of RTRI, 36(3), pp.149~154 (1995)
- I.Wolf, "DB Studies Higher Levels of Braking Power", International Railway Journal, 8, pp.120~125 (1996)
- A Study on the Development of a Fe-based Brake Linning with Sponge Structure For Rolling Stock, "S.J.Kwon", KRRI, ~ (1999)
- "KRS BR 0007-10(R), Non-asbestos disc brake linning, Korea Railroad Standard", ~ (2006)
- Y. Desplanques, "A Tribometer for the Study of Materials Under Railway Braking Conditions", Tribology Research, pp.381~391 (2001)