往复滚动工况下车轮钢磨损机制研究  

Study on Reciprocating Rolling Wear Mechanism of Wheel Steel

作　　者：王蕴华[1] 郭俊[1] 王文健[1] 刘启跃[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室摩擦学研究所,四川成都610031

出　　处：《润滑与密封》2008年第12期44-46,20,共4页Lubrication Engineering

基　　金：四川省应用基础基金项目(2008JY0066);高等学校博士学科点专项科研基金(20060613017);国家973计划项目(2007CB714702)

摘　　要：利用往复滚动试验装置,对不同制动状态和频率下的车轮钢摩擦磨损机制进行了研究。结果表明:随切向摩擦力的增加,滚动摩擦副间的相对滑动量、摩擦因数和线接触区域的拉压应变相应变大,车轮钢平面试样表面的损伤形式呈现从擦伤到磨粒磨损再到粘着和疲劳剥离的变化规律;摩擦因数一定时,随频率的增加,磨损形式由磨粒磨损逐渐向疲劳磨损转变。Reciprocating rolling friction and wear behaviors of wheel steel were investigated under different braking force and different frequencies using a rolling testing apparatus. The results show that the slip and coefficient of friction of the rolling friction pair have an increase with braking force increasing. The wear damage of wheel surface would transform from slight scratch to abrasive wear, adhesion and fatigue spalling with the coefficient of friction increasing. With the frequency increasing, the wear mechanism makes a transform from abrasive wear to fatigue wear.

关 键 词：车轮钢 滚动磨损 摩擦因数 磨损机制 频率 

分 类 号：TH117.1[机械工程—机械设计及理论]