ISSN   1004-0595

CN  62-1095/O4

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李伟, 李书义, 郭峰. 微量供油反润湿作用下润滑增效数值分析[J]. 摩擦学学报. DOI: 10.16078/j.tribology.2023183
引用本文: 李伟, 李书义, 郭峰. 微量供油反润湿作用下润滑增效数值分析[J]. 摩擦学学报. DOI: 10.16078/j.tribology.2023183
LI Wei, LI Shuyi, GUO Feng. Numerical Analysis of Lubricating Efficiency Enhancement under Anti-Wetting Characteristics of Micro-Oil Supply[J]. TRIBOLOGY. DOI: 10.16078/j.tribology.2023183
Citation: LI Wei, LI Shuyi, GUO Feng. Numerical Analysis of Lubricating Efficiency Enhancement under Anti-Wetting Characteristics of Micro-Oil Supply[J]. TRIBOLOGY. DOI: 10.16078/j.tribology.2023183

微量供油反润湿作用下润滑增效数值分析

Numerical Analysis of Lubricating Efficiency Enhancement under Anti-Wetting Characteristics of Micro-Oil Supply

  • 摘要: 基于当今高速机械润滑和社会节能环保要求,微量润滑技术快速发展,而如何保证接触区润滑有效性成为关键. 试验发现,基础油添加一定量硬脂酸后轨道润滑油呈现一定反润湿性,使得微量润滑油呈油滴状分布,能够达到润滑增效的目的. 基于此,建立点接触微量润滑模型,分析油滴供油对接触区润滑的影响规律,并与均匀供油和充分供油对比. 结果表明:一定量润滑油供给下油滴供油方式可以达到润滑增效的作用,但其增效作用不具有统一性,而且由于油滴非连续性供油方式则会导致接触区润滑状态呈现一定的波动性;与均匀分布供油相比,油滴供油的润滑增效情况会受到油滴分布情况的影响,工况参数的不恰当选择甚至会丧失其润滑增效优势;理论结果可为微量润滑增效设计提供数据参考,具有一定的工程指导意义.

     

    Abstract: Based on high-speed mechanical lubrication and social requirements of energy saving and environmental protection, micro-lubrication technology has developed rapidly, and how to ensure the lubrication effectiveness of the contact zone has become the key. It is found that after a certain amount of stearic acid is added to the base oil, the track lubricating oil shows a certain anti-wettability, and the trace lubricating oil is distributed like oil droplets, which could achieve the purpose of improving lubricating efficiency. In view of this, a micro-lubrication model of point contact was established, and the influence of oil droplet on contact lubrication was analyzed and compared with uniform oil supply and full oil supply. The results showed that the lubricating effect can be enhanced by the oil droplet supply under a certain amount of lubricating oil, but the synergistic effect was not uniform, and the lubrication state of the contact zone will showed a certain fluctuation due to the discontinuous oil droplet supply. Compared with the uniform distribution of oil, the lubricating efficiency of oil droplet supply will be affected by the distribution of oil droplet, and the improper selection of working parameters will even lose its lubricating efficiency advantage. The theoretical results can provide data reference for the design of micro-lubrication efficiency enhancement, and have certain technical guidance significance.

     

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