Effect of Normal Load on Friction and Wear Properties of Stainless-Steel/Copper-Metal Impregnation Carbon under Electric Current
摘 要
在自行设计的销-盘式摩擦磨损试验机上进行了不同法向载荷下不锈钢/浸金属碳载流摩擦磨损试验,分析了法向载荷对其摩擦磨损性能的影响,并用SEM观察了其磨损形貌.结果表明:摩擦因数随着法向载荷的增大而减小,160 N后基本趋向稳定;10 A电流时,浸金属碳销试样的磨损率很低,且增加趋势不明显,30~50 A电流时,磨损率显著提高,且浸金属碳销试样磨损率随着法向载荷的增大而减小,最后趋于平缓;此外,放电强度随着法向载荷的增大而减弱;在低法向载荷下,磨损类型以电弧烧蚀和氧化磨损为主,在高法向载荷下,磨损类型以磨粒磨损和粘着磨损为主,且都伴随有材料的转移.
Abstract
The current-carrying friction and wear test for stainless steel/metal impregnation carbon was carried out under different normal loads on a self-designed pin-and-disc friction and wear tester.The effect of normal load on its friction and wear properties was analyzed,and the morphology of the worn surface was observed by SEM.The results indicate that the friction coefficient decreased with the increase of normal load,then kept stable until 160 N.When the current was 10 A,wear rate of the pin sample was very low and its increasing trend of change was not obvious.When the current was 30-50 A,the wear rate increased remarkably and then decreased with increasing of normal load,and kept stable at last.Furthermore,the discharge strength decreased with increasing of the normal load.Arc erosion and oxidative wear were dominant wear type with low normal load,abrasive wear and adhesive wear were dominant with high normal load.And both were accompanied with material transfer.
中图分类号 U264.3 TH117.1
所属栏目 试验研究
基金项目 国家“973”计划资助项目(2007CB714703);国家科技支撑计划资助项目(2009BAG12A01-D06-1);国家自然科学基金资助项目(50821063)
收稿日期 2009/7/11
修改稿日期 2010/4/6
网络出版日期
作者单位点击查看
备注丁涛(1982-),男,湖北应城人,博士研究生.
引用该论文: DING Tao,CHEN Guang-xiong,ZHU Min-hao. Effect of Normal Load on Friction and Wear Properties of Stainless-Steel/Copper-Metal Impregnation Carbon under Electric Current[J]. Materials for mechancial engineering, 2010, 34(9): 5~8
丁涛,陈光雄,朱旻昊. 法向载荷对不锈钢/浸金属碳载流摩擦磨损性能的影响[J]. 机械工程材料, 2010, 34(9): 5~8
被引情况:
【1】陈伟,陈光雄,胡艳,李红,周培勇, "平均离线距离对弓网电弧特性及碳滑板载流摩擦磨损性能的影响",机械工程材料 40, 74-77(2016)
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参考文献
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【2】李占君,孙乐民,张永振.载流摩擦磨损研究现状及前景[J].铁道运输与经济,2005(1):82-84.
【3】刘芳,王黎,高晓蓉,等.受电弓与接触网间的接触压力检测研究[J].电力机车与城轨车辆,2006,29(6):19-22.
【4】孟祥奎,伊津芝.铁路提速后保证良好弓网关系的探[J].电气化铁道,2002(3):28-30.
【5】吴学杰,张卫华,梅桂明,等.接触网-受电弓振动主动控制问题的研究[J].振动工程学报,2002,15(1):36-40.
【6】BOUCHOUCHA A,CHEKROUND S,PAULMIER D.Influence of the electrical sliding speed on friction and wear processes in an electrical contact copper-stainless steel[J].Applied Surface Science,2004,223:330-342.
【7】HE D H,MANORY.A novel electrical contact material with improved self-lubrication for railway current collectors[J].Wear,2001,249:626-636.
【8】李娜,张弘,于正平.受电弓滑板-接触导线摩擦磨损机理与特性分析[J].中国铁道科学,1996,17(4):63-68.
【9】KUBO S,KATO K.Effect of arc discharge on wear rate of Cu-impregnated carbon strip in unlubricated sliding against Cu trolley under electric current[J].Wear,1998,216:172-178.
【10】贾步超,李灵敏,陈光雄.载流条件下的1Cr18Ni9Ti/浸金属碳摩擦磨损性能研究[J].润滑与密封,2007,32(12):62-65.
【11】AZEVEDO C R F,SINATORA A.Failure analysis of a railway copper contact strip[J].Engineering Failure Analysis,2004,11:829-841.
【12】BOUCHAOUCHA A,KADIRI E K,ROBERT F,et al.Metals transfer and oxidation of copper-steel surfaces in electrical sliding contact[J].Surface and Coatings Technology,1995,76/77:521-527.
【13】BOUCHOUCHA A,ZAIDI H,KADIRI E K,et al.Influence of electric fields on the tribological behaviour of electrodynamical copper/steel contacts[J].Wear,1997,203/204:434-441.
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