Tribological properties of dual-freedom sliding roller pairs with a loss of lubrication
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 12 November 2024
Issue publication date: 21 November 2024
Abstract
Purpose
This paper aims to design a novel test device and study the wear properties and the thermal mechanisms of roller pairs in dual-freedom sliding contacts.
Design/methodology/approach
On the transition process of lubrication regimes, experiments were conducted with various values of running speed and slip ratio obtained by two motorized spindles. Temperature and surviving time would be obtained of GCr15/GCr15 and DLC/GCr15 friction pairs. Micro photography was obtained with a PGI 3D stylus profiler and a confocal microscopy OLS4000-3D. An empirical mode decomposition method was used to eliminate measure errors.
Findings
Results showed that, even with little initial lubricant, rolling/sliding pairs still rotated for a certain time. With the synthetic actions of the dual-freedom sliding, the loss of lubrication and the tilt, interesting helical grooves appeared. Sliding speeds had remarkable effects on survive time, temperatures and surface topographies. In addition, the equilibrium values of the temperature and the surface roughness were obtained in sufficient oil supply. Extreme wear-out conditions were obtained with starved lubrication. Diamond-like carbon coatings showed better heat resistance and better wear resistance.
Originality/value
This work would be critical for the life design and the heat treatment of rolling bearings in the full flood lubrication and the starved lubrication.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0164/
Keywords
Acknowledgements
This study was sponsored by the China Scholarship Council (No. [2017]3109) and the National Key Research and Development Program of China (No. 2018YFB2000200). Experiments were designed and conducted by W.Z. and J.Y. The interpretation and analysis of results were completed by W.Z., Z.L. and W.C., while W.C. was the doctoral advisor at Xi’an Jiaotong University in China. The English writing was guided by A.L., who was the joint-supervision advisor during W.Z.’s study at UNSW in Australia.
Conflict of interest: All authors declare that they have no conflicts of interest in this work.
Citation
Zhang, W., Yue, J., Chen, W., Liu, Z. and Liu, A. (2024), "Tribological properties of dual-freedom sliding roller pairs with a loss of lubrication", Industrial Lubrication and Tribology, Vol. 76 No. 10, pp. 1285-1293. https://doi.org/10.1108/ILT-05-2024-0164
Publisher
:Emerald Publishing Limited
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