Experimental study on operating characteristics of rotor-bearing system lubricated by gallium-based liquid metal

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL Industrial Lubrication and Tribology Pub Date : 2024-06-04 DOI:10.1108/ilt-03-2024-0067

Chunjie Wei, Qi Chen, Jimin Xu, Xiaojun Liu, Wei Wang

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Abstract

Purpose

The purpose of this paper is to explore the operating characteristics of gallium-based liquid metals (GLMs) by directly adding them as lubricants in real mechanical equipment.

Design/methodology/approach

This paper conducts an analysis of the rotor-bearing system under GLM lubrication using a constructed test rig, focusing on vibration signals, surface characteristics of the friction pair, contact resistance and temperature rise features.

Findings

The study reveals that GLM can effectively improve the lubrication condition of the tribo-pair, leading to a more stable vibration signal in the system. Surface analysis demonstrates that GLM can protect the sample surface from wear, and phase separation occurs during the experimental process. Test results of contact resistance indicate that, in addition to enhancing the interfacial conductivity, GLM also generates a fluid dynamic pressure effect. The high thermal conductivity and anti-wear effects of GLM can reduce the temperature rise of the tribo-pair, but precautions should be taken to prevent oxidation and the loss of its fluidity.

Originality/value

The overall operating characteristics of the rotor-bearing system under GLM lubrication were investigated to provide new ideas for the lubrication of the rotor-bearing system.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-03-2024-0067/

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镓基液态金属润滑转子轴承系统运行特性的实验研究

本文的目的是通过在实际机械设备中直接添加镓基液态金属（GLM）作为润滑剂来探索其工作特性。设计/方法/方法本文使用构建的试验台对 GLM 润滑下的转子轴承系统进行了分析，重点关注振动信号、摩擦副的表面特性、接触电阻和温升特征。表面分析表明，GLM 可以保护样品表面免受磨损，并且在实验过程中会发生相分离。接触电阻的测试结果表明，除了增强界面传导性，GLM 还能产生流体动压效应。GLM 的高导热性和抗磨损效果可以降低三元对的温升，但应采取预防措施，防止氧化和流动性的丧失。原创性/价值研究了 GLM 润滑下转子轴承系统的整体运行特性，为转子轴承系统的润滑提供了新思路。同行评审本文的同行评审历史可在以下网址查阅：https://publons.com/publon/10.1108/ILT-03-2024-0067/。

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.