ISSN   1004-0595

CN  62-1095/O4

高级检索
彭玉兴, 王高芳, 朱真才, 常向东, 卢昊, 唐玮, 王大刚. 低温环境下矿井提升钢丝绳摩擦磨损特性研究[J]. 摩擦学学报, 2022, 42(3): 552-561. DOI: 10.16078/j.tribology.2021088
引用本文: 彭玉兴, 王高芳, 朱真才, 常向东, 卢昊, 唐玮, 王大刚. 低温环境下矿井提升钢丝绳摩擦磨损特性研究[J]. 摩擦学学报, 2022, 42(3): 552-561. DOI: 10.16078/j.tribology.2021088
PENG Yuxing, WANG Gaofang, ZHU Zhencai, CHANG Xiangdong, LU Hao, TANG Wei, WANG Dagang. Friction and Wear Characteristics of Mine Hoist Wire Rope at Low Temperature[J]. TRIBOLOGY, 2022, 42(3): 552-561. DOI: 10.16078/j.tribology.2021088
Citation: PENG Yuxing, WANG Gaofang, ZHU Zhencai, CHANG Xiangdong, LU Hao, TANG Wei, WANG Dagang. Friction and Wear Characteristics of Mine Hoist Wire Rope at Low Temperature[J]. TRIBOLOGY, 2022, 42(3): 552-561. DOI: 10.16078/j.tribology.2021088

低温环境下矿井提升钢丝绳摩擦磨损特性研究

Friction and Wear Characteristics of Mine Hoist Wire Rope at Low Temperature

  • 摘要: 为探究低温环境下矿井缠绕提升钢丝绳之间的滑动摩擦磨损特性,使用自制的低温环境钢丝绳摩擦磨损试验装置,以6×19+FC钢丝绳为研究对象,探究低温环境下干摩擦和水油润滑状态下钢丝绳的摩擦磨损特性. 研究结果表明:干摩擦时,摩擦系数随环境温度的降低小幅增大,在−25 ℃时达到最大值,约0.85. 油水润滑状态时,摩擦系数、磨损面积和磨损深度均明显小于干摩擦状态,平均磨损面积减小了约3倍,平均磨损深度减小了约7倍,平均摩擦系数随环境温度的降低先增大后减小,在−15 ℃时达到最大值,约0.35. 此外,随着温度的降低,干摩擦状态时钢丝绳的磨损机理由氧化磨损和磨粒磨损转变为疲劳磨损和黏着磨损;油水润滑状态时,钢丝绳的氧化磨损减弱,黏着磨损先加重后减弱.

     

    Abstract: Mine hoist is an important throat equipment for coal transportation from the bottom of the shaft to the ground in coal mining. Hoisting wire rope is an important part of the hoist. For the winding hoist, there must be friction and wear when the wire rope is wound on the drum, which affects the service life of the rope. In addition, the drum room is generally in an open state, and its internal temperature is the same as the ambient temperature. However, the low temperature in winter in the north of China forces the wire rope to serve in the cold and freezing environment, and the lubrication state, icing and mechanical properties of the wire at low temperature will affect the improvement of the friction and wear properties of the rope, thus threatening the safety of mine production. Therefore, based on the self-made friction and wear test device of wire rope in low temperature environment, the sliding friction and wear characteristics of mine winding-hoisting wire rope under low and freezing environment were explored, which provided important basic data and theoretical basis for the design of mine hoisting system in low temperature environment.  Firstly, the friction and wear characteristics of wire rope (6×19+FC) under dry friction and oil-water lubrication at low temperature were investigated. The results showed that the friction coefficient increased non-linearly with the decrease of ambient temperature under the same speed and load test conditions. For dry friction, the friction coefficient increased slightly with the decrease of ambient temperature, and reached the maximum value of at −25 ℃, approximately 0.85. However, under oil-water lubrication, the friction coefficient of wire rope increased first and then decreased at different ambient temperatures, and reached the maximum value of at -15 ℃, approximately 0.35. In addition, humidity decreased as the temperature decreased. In low temperature and humidity environment, the oxidation reaction between friction pairs of the upper and lower layer rope without lubricating oil protection was greatly weakened, which reduced the generation of metal oxides that played an isolation role. This intensified the adhesion between the friction pairs of wire rope, leading to higher friction coefficient in dry friction than that in oil-water lubrication.  Then, the influence of low temperature environment on the wear of wire rope was analyzed quantitatively and qualitatively by statistical analysis of the relationship between wear depth, wear area and the ambient temperature of the wire rope. It was found that the wear depth and wear area of the wire rope were consistent with the change of ambient temperature under dry friction, with the minimum values of 278 μm and 6.23 mm2 at 0 ℃, respectively. During lubrication, the wear area and wear depth decreased to about 1/4 and 1/7 of that of dry friction, respectively, and both reached the maximum at −15 ℃, approximately 2.98 mm2 and 58 μm. In addition, the analysis of the element content on the worn surface showed that the oxygen atom atomic fraction on the worn surface of the wire rope was the highest, approximately 10.3%, when the ambient temperature was −10 ℃ during dry friction. Under oil-water lubrication, the oxygen atomic fraction was approximately 3.54% at the ambient temperature of −15 ℃.  Finally, the wear mechanism of wire rope was analyzed. With the decrease of the temperature, the wear patterns of wire rope samples changed from oxidation wear and abrasive wear at 0 ℃ to fatigue and adhesion wear at −25 ℃. As the ambient temperature decreased from 0 ℃ to −25 ℃, the adhesion wear of the wire rope increased first and then weakens under oil-water lubrication. At the same time, the oxidation wear of wire rope can be greatly reduced in low temperature environment.

     

/

返回文章
返回