Influence of different mineral particles in lubricating grease on the fretting behavior between steel wires under different contact forms
Influence of different mineral particles in lubricating grease on the fretting behavior between steel wires under different contact forms
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DOI：
10.1016/j.wear.2021.203700
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发表时间：
2021-02
期刊：
影响因子：
5
通讯作者：
Chun-ming Xu;Yu-xing Peng;Zhencai Zhu;Wei Tang;Kun Huang
中科院分区：
文献类型：
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作者：
Chun-ming Xu;Yu-xing Peng;Zhencai Zhu;Wei Tang;Kun Huang
矿井中悬浮的矿粒加剧了提升钢丝绳的磨损，严重威胁矿井安全。为了探讨不同矿物颗粒对钢丝间微动行为的影响，利用自制的磨损试验机对钢丝在不同接触形式下进行了磨损试验。结果表明，钢丝间的摩擦系数随矿粒（煤粒和矿粒）浓度的增加而减小。钢丝的磨损系数随煤粒浓度的增加而减小，而对于混有矿粒的润滑脂，磨损系数则呈现相反的变化规律。与原始润滑脂和添加煤粒的润滑脂相比，添加矿粒的润滑脂条件下钢丝的磨痕表现出更严重的犁沟、微裂纹和凹坑。钢丝在含有不同矿物颗粒的润滑脂润滑下的磨损机理为磨粒磨损、粘着磨损和疲劳磨损。
The suspended mineral particles in the mine aggravate the wear of hoisting wire rope and seriously threaten the mine safety. In order to explore the effect of different mineral particles on the fretting behavior between steel wires, the wear test of steel wires under different contact forms was performed by a homemade tester. Results show that the coefficient of friction between steel wires decreases with increasing the concentrations of mineral particles (coal particles and ore particles). The wear coefficient of steel wire decreases with the increase of the coal particle concentration, while for the grease mixed with ore particles, the wear coefficient presents the opposite change rule. Compared with the original grease and the grease mixed with coal particles, the wear scars of steel wire under the grease mixed with ore particles condition show more serious furrows, micro cracks and pits. The wear mechanisms of steel wire lubricated by the grease mixed with different mineral particles are abrasive wear, adhesive wear and fatigue wear.