Abstract
The fabric composites, which are always used as a self-lubricant liner, also work as a forming lubricant during the assembly of the spherical plain bearings. Different from previous published works, the tribological behavior of polytetrafluoroethylene (PTFE)/Nomex/phenolic composite lubricant under cold forming condition in the bearing assembly process was investigated in details. A hybrid PTFE/Nomex fabric composite with a volume fraction of 1:3 coated with phenolic resin matrix sticking on a stainless steel 05Cr17Ni4Cu4Nb was prepared for the study. The ring with boss compression test (RCT-B) was selected as a tribometer, and a specific group of calibration curves were constructed by simulations with various friction factors. To obtain favorable tribological performance of the fabric-composite lubricant, the preparation parameters of the testing workpieces, including number of sandblasting cycles, curing time, and curing temperature, were optimized. To explore the lubricate limit of the optimal fabric-composite lubricant, the RCT-B tests with much larger reduction in height under much higher press speed were furtherly carried out. The failure modes of the fabric-composite lubricant, mainly including peel off, hysteresis, and delamination, were revealed. The failure mechanisms and the applicable limitation of the fabric-composite lubricant were finally discussed.
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This work was supported by the National Natural Science Foundation of China (No. 51475294).
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Hu, C., Zhuo, Y., Zhu, L. et al. Tribological behavior of PTFE/Nomex/phenolic composite lubricant under cold forming condition in the bearing assembly process. Int J Adv Manuf Technol 121, 6393–6406 (2022). https://doi.org/10.1007/s00170-022-09719-7
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DOI: https://doi.org/10.1007/s00170-022-09719-7