CAJ | 학술논문

不同载流情况下,引起滑动接触面温升的主要因素有摩擦热、焦耳热、电弧热.接触面的温升使接触材料表面发生物理化学变化,从而改变了接触面成分,同时反过来影响接触面的滑动电接触性能.论文通过对铜基粉末冶金滑板、浸铜碳滑板两种滑板材料与铜锡导线的对磨实验,分析了两种滑板材料在受流摩擦时的磨损行为.研究表明:随着电流的增大,两种滑板材料的接触电阻、温度以及磨耗率都在增大,浸铜碳滑板材料的接触电阻变化率较小,但接触表面的温度偏高,该滑板磨耗率变化较小,受流磨损性能较好.
불동재류정황하,인기활동접촉면온승적주요인소유마찰열、초이열、전호열.접촉면적온승사접촉재료표면발생물이화학변화,종이개변료접촉면성분,동시반과래영향접촉면적활동전접촉성능.논문통과대동기분말야금활판、침동탄활판량충활판재료여동석도선적대마실험,분석료량충활판재료재수류마찰시적마손행위.연구표명:수착전류적증대,량충활판재료적접촉전조、온도이급마모솔도재증대,침동탄활판재료적접촉전조변화솔교소,단접촉표면적온도편고,해활판마모솔변화교소,수류마손성능교호.
At different currents, temperature rising of sliding contact surface is caused by the combination of frictional heating, Joule heating and arc heating. At the same time, the sliding contact surface's temperature rising changes the contact materials' composition, and conversely affects the sliding contact characteristics. In this article, the Cu-based sintered alloy strip and Cu impregnation carbon strip are two experimental materials, and rub against the Cu-tin wire to analyze the wear characteristics with currents. By the comparative analysis, this article reaches conclusions that the contact resistance, the temperature and the wear rate of two slide plates rise with current. The contact resistance change rate of the Cu impregnation carbon strip are lower, but the contact temperature is higher; because of the existence of lubricant and arc-resistivity of carbon, the Cu impregnation carbon strip possesses lower wear rate and good wear characteristics with current.