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Analysis of the impact of graphene nano-lubricating oil on thermal performance of hydrostatic bearing

Dongju Chen (Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, College of Mechanical and Energy Engineering and Beijing Key Laboratory of Advanced Manufacturing Technology, College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, China)
Yupeng Zhao (Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, College of Mechanical and Energy Engineering and Beijing Key Laboratory of Advanced Manufacturing Technology, College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, China)
Kun Sun (Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, College of Mechanical and Energy Engineering and Beijing Key Laboratory of Advanced Manufacturing Technology, College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, China)
Ri Pan (Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, College of Mechanical and Energy Engineering and Beijing Key Laboratory of Advanced Manufacturing Technology, College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, China)
Jinwei Fan (Mechanical Industry Key Laboratory of Heavy Machine Tool Digital Design and Testing, College of Mechanical and Energy Engineering and Beijing Key Laboratory of Advanced Manufacturing Technology, College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 30 April 2024

1

Abstract

Purpose

To enhance the performance of hydrostatic bearings, graphene serves as a lubricant additive. Using the high thermal conductivity of graphene, the purpose of this study is to focus on the impact of graphene nano-lubricating oil hydrostatic bearing temperature rise at various speeds and eccentricities.

Design/methodology/approach

The thermal conductivity of graphene nano-lubricating oil was calculated by molecular dynamics method and based on the viscosity–temperature effect, the coupled heat transfer finite element model of hydrostatic bearing was established; temperature rise of pure lubricating oil and graphene nano-lubricating oil hydrostatic bearing were analysed at different speed and eccentricity based on computational fluid dynamics method.

Findings

With the increase of speed and eccentricity, the temperature rise of 0.2% graphene nano-lubricating oil bearings is lower than that of pure lubricating oil bearings; in addition with the increase of graphene mass fraction, the temperature rise of graphene nano-lubricating oil bearings is always higher than that of pure lubricating oil bearings, and the higher the speed, the more obvious the phenomenon.

Originality/value

The effects of graphene as a lubricant additive on the thermal conductivity of nano-lubricating oil and the variation of the temperature rise of graphene nano-lubricating oil bearings compared to pure lubricating oil bearings were analysed by combining micro and macro methods.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2023-0388

Keywords

Acknowledgements

Funding: This research was funded by the National Natural Science Foundation of China Grant Number 51875005 and 51475010.

Declaration of conflicting interests: The authors declare that they have no conflicts of interest.

Data availability: Data in the paper are not related to other published data sets. This paper lists some relevant data of the method in the figures and tables, and other data are available from the corresponding author upon request.

Citation

Chen, D., Zhao, Y., Sun, K., Pan, R. and Fan, J. (2024), "Analysis of the impact of graphene nano-lubricating oil on thermal performance of hydrostatic bearing", Industrial Lubrication and Tribology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ILT-12-2023-0388

Publisher

:

Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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