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激光微造型凸轮副的摩擦磨损

, PP. 216-220

Keywords: 凸轮,激光微造型,几何形貌,摩擦学性能

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Abstract:

采用UMT〖CD*2〗2多功能摩擦磨损实验机,模拟内燃机凸轮/滚轮工况条件,考察了多种激光微造型形貌试样表面的摩擦磨损特性。实验结果发现,与未处理光滑表面相比,激光微造型试样表面的耐磨、抗擦伤性显著提高,其中,凹坑造型表面的摩擦因数显著下降,而凹槽表面的摩擦因数相对较大。这说明凹槽形貌会增大表面摩擦,而凹坑形貌具有一定的减摩效果。合理选择凹坑的深度及其面积占有率,并进行微形貌几何参数的优化组合,可达到最佳减摩效果。

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