轮轨材料匹配摩擦学试验研究  

Study on Friction and Wear Matching Tests between Different Wheel-rail Materials

作　　者：张向龙[1] 钟雯[1] 蒋文娟[1] 刘启跃[1] 

机构地区：[1]西南交通大学摩擦学研究所,四川成都610031

出　　处：《润滑与密封》2011年第5期20-23,共4页Lubrication Engineering

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB714702);国家863计划项目(2009AA04Z424);国家科技支撑计划项目(2009BAG12A01-B05-1);国家自然科学基金项目(50875221);西南交通大学创新团队培育计划项目(2007IRT01);西南交通大学博士研究生创新基金项目

摘　　要：根据赫兹接触理论,使用MMS-2A微机控制摩擦磨损试验机对3种含碳量不同的车轮材料分别与U71Mn热轧钢轨进行匹配试验,研究其磨损与接触疲劳性能并进行微观形貌分析。结果表明:车轮钢材料的耐磨性与硬度成正比;随着轮轨材料硬度比增大,磨损机制由黏粘着和疲劳磨损转变为磨粒磨损。According to Hertz contact theory,matching tests between three kinds of wheel materials and U71Mn were performed using a MMS-2A friction and wear testing machine.The wear and contact fatigue properties were studied and the micro-morphology was analyzed.The results show that the abrasion resistance of wheel steel is proportional to the hardness of the materials.As hardness ratio between wheel and rail increases,the abrasion mechanism transforms from adhesion and fatigue wear to abrasive wear.

关 键 词：车轮 滚动接触 磨损 疲劳 

分 类 号：TH117.1[机械工程—机械设计及理论]