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颗粒污染物对润滑油抗磨性能的影响试验研究
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湖北省高端人才引领培养计划项目(鄂科技通[2012]86号);长江武汉航道局科技项目.


Experimental Study on the Effect of Particle Contaminant on Antiwear Performance of Lubricating Oils
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    摘要:

    针对船用柴油机润滑油可能受到的颗粒污染因素,选取铜、铁、硅3种固体颗粒污染物,研究润滑油在不同浓度、不同颗粒大小的颗粒污染物影响下的抗磨性能变化。试验采用四球摩擦磨损试验机评价润滑油摩擦磨损性能,通过显微镜、在线铁谱仪分析钢球表面磨斑及其表面磨损形貌特征,探讨船用柴油机润滑油污染物对其抗磨性的影响规律。结果表明:不同污染物颗粒对润滑油抗磨性作用效果有明显差异,低浓度的铁粉颗粒起到了减轻磨损的作用,但浓度达到一定值时,润滑油性能发生突变,抗磨性能变差;软质的铜粉颗粒在低浓度时对润滑油抗磨性能影响很小,但浓度达到一定值时,润滑油抗磨性能恶化;高硬度硅颗粒具有明显的切削作用,导致润滑油膜直接破裂,加剧磨损。

    Abstract:

    For the marine diesel engine lubricants may be subject to particle pollution factors,three kinds of solid particles of copper,iron and silicon were selected to study the antiwear performance of lubricating oil under the influence of different particle size pollutants.The friction and wear properties of lubricating oil were evaluated by fourball friction and wear tester.The surface wear scar and surface wear morphology of steel ball were analyzed by microscope and online ferrography to explore the impact of particle contaminant the wear resistance of lubricating oil.The results show that the effect of different pollutants on the wear resistance of lubricating oil is obviously different.The iron particles under low concentration in the lubricating oil can reduce the wear and tear,however,when the concentration of iron particles reaches a certain value,a abrupt change of lubricating oil performance happens and its wear resistance becomes worse.Soft copper particles under low concentration has very small influence on the wear resistance of lubricating oil,while when the concentration of soft copper particles reaches a certain value,the wear resistance of lubricating oil is deteriorated.High hardness of silicon particles have significant cutting effect and will result in direct cracking of lubricating oil film and increase the wear and tear of steel ball.

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盛晨兴,宁昶雄,张玉人,李永生.颗粒污染物对润滑油抗磨性能的影响试验研究[J].润滑与密封,2017,42(7):7-13.
. Experimental Study on the Effect of Particle Contaminant on Antiwear Performance of Lubricating Oils[J]. Lubrication Engineering,2017,42(7):7-13.

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  • 在线发布日期: 2018-02-27
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