Effects of Average Offline Distance on Characteristics of Pantograph-Catenary Arc and Friction and Wear Performance with Electric Current of Carbon Strip
摘 要
采用环-块式载流摩擦磨损试验机研究了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。结果表明: 法向载荷越小, 滑动速度越大, 平均离线距离越大; 无电流时,碳滑板的磨损率随离线距离的增大而减小; 通电后, 碳滑板的磨损率和电弧能量均随平均离线距离的增大呈先增大后减小的趋势; 通电后的碳滑板的磨损率远大于无电流时的; 平均离线距离很小时, 碳滑板的磨损机制主要为氧化磨损、粘着磨损及少量的磨粒磨损; 平均离线距离较大时, 碳滑板的磨损机制主要为电弧烧蚀和氧化磨损, 同时伴有少量的粘着磨损和磨粒磨损。
Abstract
A block-on-ring friction tester was used to study the effects of average offline distance on characteristics of pantograph-catenary arc and friction and wear performance of carbon strip. The results indicate that the average offline distance increased with the decrease of normal load and with the increase of sliding speed. The wear rate of carbon strip decreased with the increase of average offline distance when no electric current was delivered. When electric current was delivered, the wear rate of carbon strip and arc energy increased and then decreased with the increase of average offline distance. The wear rate of carbon strip with electric current was much higher than that of carbon strip without electric current. When the average offline distance was very small, main wear mechanisms of carbon strip were oxidative wear, adhesive wear and a small amount of abrasive wear; When the average offline distance was larger, main wear mechanisms of carbon strip were arc erosion and oxidative wear, meanwhile, a small amount of adhesive wear and abrasive wear could be observed.
中图分类号 TH117.1 DOI 10.11973/jxgccl201603018
所属栏目 材料性能及其应用
基金项目 国家自然科学基金资助项目(U1234202); 四川省科技支撑计划项目(2011FZ0052)
收稿日期 2015/1/20
修改稿日期 2015/11/25
网络出版日期
作者单位点击查看
备注陈伟(1988—), 男, 河北承德人, 硕士研究生。
引用该论文: CHEN Wei,CHEN Guang-xiong,HU Yan,LI Hong,ZHOU Pei-yong. Effects of Average Offline Distance on Characteristics of Pantograph-Catenary Arc and Friction and Wear Performance with Electric Current of Carbon Strip[J]. Materials for mechancial engineering, 2016, 40(3): 74~77
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[J]. 机械工程材料, 2016, 40(3): 74~77
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【3】丁涛, 王鑫, 陈光雄, 等.不同弹簧刚度下不锈钢/浸金属碳摩擦副的受流质量与磨损性能的关系[J].机械工程材料, 2011, 35(1): 33-36.
【4】李咏梅, 何莉萍, 陈光雄, 等.表面粗糙度对碳/铜载流摩擦副摩擦磨损性能的影响[J].机械工程材料, 2012, 36(3): 69-71.
【5】李鹏, 杜三明, 孙乐民, 等.载电条件下铬青铜/纯铜摩擦副摩擦磨损性能研究[ J].摩擦学学报, 2003, 23(3):250-252.
【6】王英,刘志刚,范富强.弓网电弧模型及其电气特性的研究进展[J].铁道学报, 2013, 35(9): 35-43.
【7】LIN X Z, ZHU M H, MO J L. Tribological and electric-arc behaviors of carbon/copper pair during sliding friction process with electric current applied [J]. Trans Nonferrous Met Soc China, 2011,21: 292-299.
【8】胡道春, 孙乐平, 上官宝.电弧能量对浸金属碳滑板材料载流摩擦磨损性能的影响[J].摩擦学学报, 2009, 29(1): 36-42.
【9】SHUNICHI K, KATO K. Effect of arc discharge on the wear rate and wear mode transitionof a copper-impregnated metallized carbon contact strip sliding against a copper disk [J]. Tribology International, 1999, 32: 367-378.
【10】PAULMIER D, MANSORI M, ZAIDI H. Study of magnetized or electrical sliding contact of a steel XC48/graphite couple [J]. Wear, 1997, 203/204:148-154.
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