游离磨粒研磨过程三体界面的摩擦学特性测试和分析  

Test and analysis of tribological properties of three-body interface in free abrasive lapping process

作　　者：贾文兵[1] 王伟[1] 刘焜[1] 王召唤[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2013年第10期1162-1165,1235,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51005067;51175136)

摘　　要：为研究研磨加工中第三体对摩擦界面作用过程的影响,探索颗粒物质性质在该过程中的体现,文章研制了能够实现不同工况下摩擦界面间摩擦力的实时准确测量的小型面接触摩擦测试系统。选择不同粒径氧化铝粉末配制研磨液,在不同载荷和研磨液质量分数时进行试验。结果表明:磨粒粒径、载荷和研磨液质量分数对摩擦界面的摩擦特性有较大影响,摩擦界面间的摩擦力随着磨粒粒径的变大或加载载荷的增大而变大。对于研磨液,质量分数最小时测得的摩擦力最大,而质量分数为10%和20%时,测得的摩擦力变小并且相差不大,说明了摩擦界面间的颗粒可能起到了润滑作用。A small plane contact friction testing system was established to study the effect of the third body on friction interface and the granular properties in free abrasive lapping process. Friction force of the interface under different conditions could be accurately measured in real time. Experiments were conducted under different loads and concentrations with grinding fluid made up of A12 03 powder of dif- ferent particle sizes. The res/dts show that the particle size, load and concentration of grinding fluid all have obvious influence on the tribological performance of three-body friction process. Friction force between the interface increases with the increase of particle sizes and loads. In the test of different concentrations of grinding fluid, the friction force reaches at maximum when the concentration is mini- mum. But the friction force decreases and is almost the same when the concentrations of grinding fluid are 10% and 20%, which indicates that granules in the interface play a role as lubricant.

关 键 词：游离磨粒 三体摩擦界面 测试系统 摩擦力 

分 类 号：TH117.1[机械工程—机械设计及理论]