水油介质下研磨子对轮轨增黏与损伤影响  

Effect of Abrasive Block on Improving Adhesion and Damage of Wheel/rail under the Water and Oil Conditions

作　　者：王文健[1] 郭火明[1] 刘启跃[1] 朱旻昊[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《机械工程学报》2015年第5期71-75,共5页Journal of Mechanical Engineering

基　　金：国家重点基础研究发展计划(973计划;2011CB711103);国家自然科学基金(50905148);教育部创新团队科学基金(IRT1178)资助项目

摘　　要：利用滚动磨损试验机开展轮轨黏着试验,研究水油介质下研磨子对轮轨增黏与损伤行为的影响。结果表明:水油介质下研磨子具有明显轮轨增黏作用,其增黏效果随施加压力的增加而增大,相同压力作用时油介质下研磨子的轮轨增黏效果更佳;水油介质下施加研磨子会加重轮轨试样的磨损,随压力增加轮轨试样磨损量呈增加趋势;水油介质下研磨子对轮轨试样表面损伤具有较大影响作用,增加压力会加重轮轨试样的表面损伤和塑性流动;随施加压力增加,水介质下轮轨试样损伤从轻微磨损向明显的表面剥离损伤转变,油介质下轮轨试样损伤从轻微点蚀转变为明显的表面疲劳损伤。The adhesion experiments of wheel/rail are carried out using a rolling wear testing apparatus. The effect of abrasive block on improving adhesion and damage of wheel/rail is explored in detail under the water and oil conditions. The results indicate that the abrasive block can obviously improve the adhesion of wheel/rail under the water and oil conditions. With an increase of pressure, the effect of improving adhesion of wheel/rail becomes better. Under the same pressure condition, the effect of improving adhesion under the oil condition is better. The abrasive block can aggravate the wear of wheel/rail specimens under the water and oil conditions. The wear volume of wheel/rail specimens has an obvious increase with an increase of pressure. The abrasive block has an important influence on surface damage of wheel/rail specimens. The increase of pressure leads to aggravate the surface damage and plastic flow of wheel/rail specimens under the water and oil conditions. With the pressure increasing, the surface damage of wheel/rail specimens transforms from the slight wear to obvious surface spalling under the water condition. Furthermore, the surface damage has a transformation from the slight pitting to visible surface fatigue damage under the oil condition.

关 键 词：轮轨 研磨子 低黏着 水油 

分 类 号：U213[交通运输工程—道路与铁道工程]