Improving tribological performance of mechanical components by laser surface texturing
Improving tribological performance of mechanical components by laser surface texturing
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DOI：
10.1007/s11249-004-8081-1
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发表时间：
2004-11-01
影响因子：
3.2
通讯作者：
Etsion, I
中科院分区：
文献类型：
--
作者：
Etsion, I
在摩擦学机械零件表面形成规则的微凹坑表面结构，可以显著提高零件的承载能力、耐磨性、摩擦系数等性能。从理论和实验两个方面研究了利用激光表面毛化（LST）技术制造微凹坑的可行性。每个微凹座可以在完全或混合润滑的情况下用作微流体动力轴承，或者在缺乏润滑条件的情况下用作润滑剂的微贮存器。理论模型的开发，并进行了实验室测试，以调查潜在的LST在摩擦部件，如机械密封，活塞环和推力轴承。在整个实验室测试中，与非毛面组件相比，LST的摩擦力大幅降低。
Significant improvement in load capacity, wear resistance, friction coefficient etc. of tribological mechanical components can be obtained by forming regular micro-surface structure in the form of micro-dimples on their surfaces. A feasibility study was performed both theoretically and experimentally using the Laser Surface Texturing (LST) technique to produce the micro-dimples. Each micro-dimple can serve either as a micro-hydrodynamic bearing in cases of full or mixed lubrication or as a micro-reservoir for lubricant in cases of starved lubrication conditions. Theoretical models were developed, and laboratory tests were performed, to investigate the potential of LST in tribological components like mechanical seals, piston rings and thrust bearings. In the entire laboratory tests, friction was substantially reduced with LST compared to the non-textured components.