激光微造型的非配合摩擦副表面增摩特性研究

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In order to study effect of different surface textures on the friction characteristics of no-match friction-pairs,according to the frictional characteristics of no-match friction-pair,micro-pit network was produced on the specimen surface with continuous wave laser,then,the surface textures,friction and wear were measured for different macro-pit diameters,share ratio of processing area and mean depth.The conclusion reveals that the coefficient of surface friction gradually rises with the increase of micro-pit＇ s depth,but the share ratio of microstructure area has no significant influence on the coefficient of friction.为了研究非配合摩擦副工件不同表面形貌对表面摩擦性能的影响,根据非配合摩擦副的摩擦特性,采用连续激光加工方法,在试件表面上加工出网状分布的凹坑形貌以形成环形凸起形貌,将凹坑直径、加工区域占有率、平均深度等参量作为分析变量,对试样进行了表面形貌检测与摩擦磨损测试。结果表明,表面摩擦系数随着凹坑深度的增加而增大,达到增摩效果,微结构区域面积占有率对摩擦系数的影响不是很明显。