Effects of cleaning detergent/water-in-oil emulsions on elastohydrodynamic lubrication

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations

Author(s)

  • Lu Chen
  • Chenchen Xu
  • Mingfei Ma
  • Wen Wang
  • Liang Guo

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1045-1051
Journal / PublicationIndustrial Lubrication and Tribology
Volume73
Issue number7
Online published6 Sep 2021
Publication statusPublished - 13 Oct 2021

Abstract

Purpose: The cleaning of food production equipment using cleaning detergents may contaminate the lubricant of the bearings, thereby reducing the bearing service life. The purpose of this paper is to investigate the cause and mechanism of such damage of bearings lubricated by cleaning detergent/water-in-oil emulsions. Design/methodology/approach: The emulsion was prepared by adding a mixture of cleaning detergent and water in one base oil. A self-designed ball-on-disc optical interference test rig was applied to examine the effect of emulsion on lubrication and wear of bearing contacts under pure sliding conditions. Findings: The emulsion reduced lubricating film thickness at a relatively low-sliding speed but only when the water concentration (20%) in emulsion was high. Water droplets were trapped around the ball-on-disc contact area under static conditions because of a high capillary force. The emulsion can induce damages on the soft surface in the startup mainly due to the presence of water around the contact. Originality/value: The basic lubrication behaviour of water/oil emulsions containing cleaning detergent under pure sliding was experimental studied and the mechanism of bearing damage in food production equipment was investigated. Based on the study, the solution to avoid such damage was proposed.

Research Area(s)

  • Bearing, Cleaning detergent, Elastohydrodynamic lubrication, Emulsions, Wear

Citation Format(s)

Effects of cleaning detergent/water-in-oil emulsions on elastohydrodynamic lubrication. / Chen, Lu; Xu, Chenchen; Ma, Mingfei; Wang, Wen; Guo, Liang; Wong, Patrick.

In: Industrial Lubrication and Tribology, Vol. 73, No. 7, 13.10.2021, p. 1045-1051.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review