纳米添加剂铁路轴承润滑脂摩擦试验数据分析  

Analysis of Friction Experiment Data of Nano-additive Railway-bearing Lubricating Grease

作　　者：夏新涛[1] 张林[1] 陈士超[1] 孟凡念[1] 吕陶梅[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2009年第5期9-12,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(50375011);河南科技大学博士科研启动基金项目(09001318)

摘　　要：目前铁路轴承的损坏主要是由于润滑脂的失效引起轴承各部件间的急剧摩擦,这直接导致抱轴的发生,严重影响铁路的安全运输。在4号锂基润滑脂中加入不同纳米材料,配制成不同比例的样品,通过摩擦试验记录试验数据,运用乏信息理论估计每组试验数据的真值,发现不同材料和不同比例的纳米材料作为添加剂对钢球的减摩效果是不同的,纳米氧化锆材料加入到润滑脂中的减摩效果是很明显的,纳米铜材料反而会增大摩擦,不适合作为润滑脂的减摩添加剂。Currently the main cause for damage of railroad bearings is that failure of lubricating grease leads to rubbing sharply among the parts of the bearing,which directly causes axle suspension and seriously affects transport safty.In this paper different nano materials are added to 4# lithium lubricating grease,and different proportion samples are prepared for friction exprinment.By using poor information theories the true value of each group datum are estimated,which shows that friction-reducing effect is different with various nano-additive and proportion.Friction reducing effect is obvious when nano-ZrO2 is used as additive.By contrary,nano-Cu as additive only increases friction and isn′t suitable for friction reducing additive of lubricating grease.

关 键 词：铁路轴承 摩擦 润滑脂 估计真值 数据融合 

分 类 号：TH133.33[机械工程—机械制造及自动化]