The friction and wear properties of steel wire rope sliding against itself under impact load
| Autor: | Chang Xiangdong, Yuxing Peng, Mi Zhentao, Xu Wenxue, Xiansheng Gong, Zhencai Zhu, Zou Shengyong, Shi-sheng Sun |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Contact friction
Maximum temperature Materials science Wire rope 02 engineering and technology Surfaces and Interfaces engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Materials Chemistry engineering Lubrication Hoist (device) Composite material 0210 nano-technology Contact area Coefficient of friction Friction test |
| Zdroj: | Wear. :194-206 |
| ISSN: | 0043-1648 |
| DOI: | 10.1016/j.wear.2018.01.010 |
| Popis: | Friction and impact between steel wire rope always exist in multi-layer winding hoist during the winding-in process, in particular for an ultra-deep coal mine. To understand the friction and wear mechanisms of wire rope among the layers in the winding hoist, a series of sliding friction experiments were carried out using a self-made friction test rig. The results show that the coefficient of friction (COF) of the wire rope changes little with increasing load and stabilizes at approximately 0.73, but decreases with the sliding velocity under dry-friction condition. However, under lubrication condition, there is almost no effect of the contact load and sliding velocity on the COF, which stabilizes at approximately 0.35. Additionally, the temperature rise is concentrated at the contact area, and it increases with the load and the sliding velocity. The maximum temperature rise with the lubrication is much lower, approximately 10 °C, than that under the condition of dry-friction, which is approximately 103 °C. Furthermore, the maximum of the COF under the impact load is significantly lower than that for the stable contact friction. With the impact and sliding velocities increase, the maximum COF under the impact load experiences a slight increase and reaches a maximum value of approximately 0.36. As the impact load increases, the COF changes little, but the impact process occurs more than once. |
| Databáze: | OpenAIRE |
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