游离水对点接触区润滑油成膜特性的影响

发布时间：2018-01-19 13:30

本文关键词： 游离水点接触区微量供油　出处：《摩擦学学报》2017年06期 　论文类型：期刊论文

【摘要】：水污染作为润滑系统污染的常见形式,对润滑油本身以及机械系统都有巨大的危害.目前关于水分对点接触区润滑特性造成影响的直接观测研究还较少,更多的是通过磨损后的接触副状态来推测可能的破坏机理.因此开展水分存在条件下与润滑接触区油池的相互作用,以及对接触区润滑能力造成影响的研究,能够对探究水分造成的机械元件早期失效机理,开展水污染的防护工作起到理论指导作用.本文作者研究了不同润滑条件下游离水对点接触区成膜特性的影响,提出了游离水对接触区膜厚产生影响的无量纲判据,发现了游离水对点接触润滑油池及轨道的冲刷及乳化作用,是造成接触区膜厚下降及回流减弱的主要原因,直接证明了游离水可造成点接触结构的早期润滑失效.
[Abstract]:Water pollution, as a common form of lubricating system pollution, has great harm to lubricating oil itself and mechanical system. The possible failure mechanism is estimated by the contact pair state after wear. Therefore, the interaction with the lubricating oil pool in the presence of water and the influence on the lubricating ability of the contact zone are studied. It can play a theoretical guiding role in exploring the mechanism of early failure of mechanical components caused by moisture and developing water pollution protection. The author has studied the influence of free water on the film-forming characteristics of point contact area under different lubricating conditions. The dimensionless criterion for the influence of free water on the film thickness of contact zone is proposed. The erosion and emulsification of free water to the contact oil pool and track are the main reasons for the decrease of film thickness and the weakening of reflux in contact area. It is proved that free water can cause early lubrication failure of point contact structure.
【作者单位】：中国计量科学研究院力声所容量密度实验室;中国计量大学计量测试工程学院;
【基金】：国家自然科学基金项目(51605460,51475440) 中国博士后科学基金项目(2016M591228) 清华大学摩擦学国家重点实验室开放基金项目(SKLTKF16B12)资助~~
【分类号】：TH117.2
【正文快照】： 2.中国计量大学计量测试工程学院,浙江杭州310018)(1.Capacity and Density Laboratory,National Institute of Metrology,Beijing 100029,China2.College of Metrology and Measurement Engineering,China Ji Liang University,Zhejiang Hangzhou 310018,China)Received 3 Ma

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