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Tribological effect of ZBUP additive on the running-in quality of sliding bearing by fractal analysis

Zhiyong Wang (Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China)
Yuankai Zhou (Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China)
Xue Zuo (Department of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 15 September 2022

Issue publication date: 25 October 2022

42

Abstract

Purpose

The purpose of this paper is to study the tribological effect of zinc borate ultrafine powder (ZBUP) oil additive on the running-in quality.

Design/methodology/approach

The running-in quality was assessed by friction coefficient and surface topography. Fractal parameters including fractal dimension, the width of multifractal, the multifractal difference, multifractal parameters, phase trajectory and correlation dimension were used to extract the nonlinear characteristics of surface topography and friction coefficient.

Findings

When the ZBUP additive was added, the convergence degree of the phase trajectory and the stability of the running in were higher than that of base oil. It indicates that the ZBUP additive can improve the running-in quality of sliding bearing. Besides, the ZBUP additive can shorten the running-in time. A boundary protective film, which has good friction-reducing and anti-wear effects, was generated on the surface when the ZBUP additive was added.

Originality/value

The results have a great significance to improve the running-in quality and prolong the service life of the sliding bearing.

Keywords

Acknowledgements

The project is supported by the National Natural Science Foundation of China (No. 52005226), Natural Science Foundation of Jiangsu Province (No. BK 20190971), the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 21KJA460003) and Postgraduate Research and Practice Innovation program of Jiangsu Province (No. SJCX21_1756).

Citation

Wang, Z., Zhou, Y. and Zuo, X. (2022), "Tribological effect of ZBUP additive on the running-in quality of sliding bearing by fractal analysis", Industrial Lubrication and Tribology, Vol. 74 No. 10, pp. 1165-1173. https://doi.org/10.1108/ILT-07-2022-0227

Publisher

:

Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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