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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >A FUNDAMENTAL STUDY ON DERAILMENT OF WHEEL FLANGE UNDER ROLLING-SLIDING AND PURE SLIDING CONDITIONS
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A FUNDAMENTAL STUDY ON DERAILMENT OF WHEEL FLANGE UNDER ROLLING-SLIDING AND PURE SLIDING CONDITIONS

机译：滚动滑动和纯滑动条件下轮毂法兰磨损的基础研究

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摘要

A newly developed full scale wheel-rail contact testing machine is used to obtain detailed data on flange climb behavior with covering various loads and displacements at the wheel flange and rail contact under both rolling-sliding and pure sliding conditions. The effects of different surface roughness of the wheel flange on coefficient of friction at the contact point in wheel flange climb mechanism were investigated. A correlation between different state of the interface (i.e. surface of dry, wet, rust, oily and different lubricated condition by solid lubricant) and wheel flange surface roughness with rail were drawn. The coefficient of friction was significantly influenced in pure sliding conditions than that of rolling-sliding conditions by the degree of the asperities on the wheel flange surface. Moreover, solid lubricant showed better performance to reduce coefficient of friction. However, the rust on the rail surfaces was one of the important factors to destabilize the friction behavior.
机译：使用新开发的全尺寸轮轨接触试验机来获取有关轮缘爬升行为的详细数据，其中涵盖了在滚动滑动和纯滑动条件下轮缘和轨接触处的各种载荷和位移。研究了轮缘爬升机构中轮缘的不同表面粗糙度对接触点摩擦系数的影响。得出界面的不同状态（即干燥，湿润，生锈，油性的表面以及使用固体润滑剂的不同润滑条件）与带轮的轮缘表面粗糙度之间的关系。摩擦系数在纯滑动条件下比在滚动滑动条件下受轮缘表面凹凸程度的影响大。而且，固体润滑剂表现出更好的性能以降低摩擦系数。但是，铁轨表面的锈蚀是破坏摩擦性能的重要因素之一。

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