A device in which the sliding interface between a friction material and a brake disc can be observed directly, was developed to investigate the phenomenon of brake squeal with reference to the ...composition and method of manufacturing the disc brake pad. The results of investigation show that, in a disc brake pad which is liable to squeal, scales of thermally-decomposed material are produced easily on the frictional surface at a low temperature and with a small compression force. It was also ascertained that, when the quantity of inorganic substances in a brake pad is increased, the brake pad becomes liable to squeal; and that, when the void content of the brake pad is increased, the rate of generation of thermally-decomposed material on its frictional surface drops and the brake pad is very unlikely to squeal. These results prove that the degree of brake squeal is governed by the rate of deposition of thermally-decomposed materials on the frictional surface.
환원분철을 이용한 자동차 브레이크용 패드 개발 김병삼; Kim Byoung-sam; 정영달 ...
한국환경기술학회지,
12/2000, Volume:
1, Issue:
3
Journal Article
본 연구에서는 제철소 고로에서 발생하는 부산물을 재활용하기 위하여 부산물을 가공하여 환원분철한 후 자동차 브레이크 패드의 원료로 이용하고자 하였다. 환원분철을 자동차 브레이크원료의 일부로 사용한 후 브레이크 다이나모미터, 스케일 테스터, 만능시험기, 소음계 등의 장비를 이용하여 자동차 브레이크 패드의 성능을 평가하였다. 또한, 본 연구에서는 환원분철을 ...자동차 브레이크 패드 원료의 일부로 사용하여 제조된 패드와 종래의 패드와의 성능을 비교하였다. 본 연구의 결과는 제철 고로에서 발생하는 부산물에 대한 재활용성 여부를 판단하는데 있어 기초자료로 활용될 것으로 판단된다.
Friction material is a very important element of disk brakes, because it is directly related to brake performance in such areas as effectiveness, friction stability with various brake conditions, pad life and different kinds of noise and vibration. Although friction material manufactures have worked to develop many different friction materials, very few studies have been published about the development of friction materials. Therefore knowledge of friction material development is not widespread. The scope of this paper is the basic considerations, studies and experiments which focus on brake pad development using sponge iron of blast furnace waste.
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