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In order to prolong the service life of electric locomotive frictional pair, which consists of copper-tin alloy contact wire and immersed copper carbon pantograph slide, a high performance sliding electrical contact testing machine was developed. It not only can adjust contact pressure, contact current and sliding speed continuously in a certain scope, but also has the function of real time monitoring...
In recent years, there has been increasing demand to miniaturize wiring harness connectors in automobiles due to the increasing volume of electronic equipment and the reduction of the installation space allocated for the electronic equipment in automobiles for the comfort of the passengers. With this demand, contact failure caused by the fretting corrosion seems to become a serious problem in the...
Low-speed sliding test of Cu-Ni-Sn based composite material contacts containing WS2 Recently, the development of sliding contacts having low resistivity is low as well as have mechanical strength is required. In this study, sliding tests was carried out on 3 kinds of new composite material containing lamellar solid lubricant (QWS2 etc.) in the Cu-Sn-Ni alloy. The results showed that excellent sliding...
Liquid metals have been used as sliding electric contacts since the time of Michael Faraday, who used Mercury in his early experimental work on electromotive force. In contrast to solid sliding electric contacts, liquid metals provide uniform coverage to a slip ring and therefore have very low electrical contact losses and are essentially wear free. However, the linear velocity dependent frictional...
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