Tribological Characteristics and Residual Tensile Strength of Wire Rope with Different Composite Greases at Normal and Low Temperatures

Abstract

To explore the tribological characteristics and residual tensile strength of winding rope with different composite greases in a low-temperature environment, tests were carried out on a self-made temperature-controlled friction tester. The results show that at normal temperature, the friction coefficient of rope lubricated by different composite greases is stable with a change of sliding distance. When the rope is lubricated by grease with multilayer graphite, there is a positive correlation between the friction coefficient and the friction temperature rise. At low temperature, the friction coefficient of the rope lubricated by the composite grease, except for IRIS + 4%MG, is higher than that at normal temperature. Secondly, from the 3D topography, fewer wear marks on the rope at room temperature are smaller than those at low temperature. The wear area and wear depth of the rope lubricated by the composite greases at low temperature are higher than those at room temperature. Finally, the residual tensile strength of rope lubricated with different composite greases at low temperatures is less than that at normal temperatures. In conclusion, compared with the original grease, the composite grease used in this test cannot reduce the wear of the rope at low temperature but can reduce the wear at room temperature.

Keywords:

• Wire rope
• composite grease
• low temperature
• residual tensile strength

Acknowledgement

I would like to express my gratitude to all those who helped me during the writing of this thesis.

Additional information

Funding

The research was supported by the National Natural Science Foundation of China (Yuxing Peng, 51975572); National Natural Science Foundation of China (Xiangdong Chang, 52005272); Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, China); Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP, China).