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文章叙述了液压系统中固体污染颗粒尺寸和油膜厚度的关系,阐明了有关材料磨损的基本概念和油膜润滑接触失效的一些判据。文章指出:摩擦学的原理可以应用于液压系统以建立油膜润滑接触来提高元件的可靠性。文章在分析了液压系统中导致介质污染的颗粒杂质的主要来源后,指出液压系统中的介质污染是不能完全避免的。为此液压元件的颗粒污染灵敏度对系统的可靠性来说是一个重要的参数。而污染灵敏度将涉及到相邻接触表面间的最小油膜厚度。文章分析了颗粒尺寸大于最小油膜厚度时引起的后果,并列出了几种情况下的油膜
The paper describes the relationship between solid contamination particle size and oil film thickness in hydraulic system, and expounds some basic concepts about material wear and some criteria for oil film lubrication contact failure. The article points out: The principle of tribology can be applied to the hydraulic system to establish oil film lubrication contact to improve the reliability of components. After analyzing the main sources of particulate impurities in the hydraulic system leading to media pollution, the paper points out that the media pollution in the hydraulic system can not be completely avoided. For this reason the particle contamination sensitivity of hydraulic components is an important parameter for the reliability of the system. The contamination sensitivity will involve the minimum oil film thickness between adjacent contact surfaces. The article analyzes the consequences of particle size greater than the minimum oil film thickness, and lists several cases of oil film