Experimental and modelling study of friction evolution and lubricant breakdown behaviour under varying contact conditions in warm aluminium forming processes
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
The lubricant behaviours under varying contact conditions were investigated by conducting pin-on-strip tests between P20 tool steel and AA7075 aluminium alloy using an automated testing system, Tribo-Mate. The effects of temperature changes, and rapid load and speed changes on the coefficient of friction (COF) and lubricant breakdown phenomenon were experimentally studied. The evolutions of COF showed three distinct stages, indicating the transformation from boundary lubrication condition to dry sliding condition. The value of COF at the initial stage was found to increase with increasing temperature. The increase of temperature, contact load and sliding speed caused an earlier breakdown of the lubricant. An interactive friction model was developed to predict friction evolutions at varying contact conditions. A close agreement with errors less than 6.8% were achieved between the model predictions and experimental results.
Date Issued
2021-06-01
Date Acceptance
2021-02-12
Citation
Tribology International, 2021, 158 (1), pp.1-11
ISSN
0301-679X
Publisher
Elsevier
Start Page
1
End Page
11
Journal / Book Title
Tribology International
Volume
158
Issue
1
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Heilongjiang Academy of Sciences Institute of Automation
Identifier
https://www.sciencedirect.com/science/article/pii/S0301679X21000827
Grant Number
Heilongjiang-Imperial-int manu
Subjects
0910 Manufacturing Engineering
0913 Mechanical Engineering
Mechanical Engineering & Transports
Publication Status
Published
Article Number
106934
Date Publish Online
2021-02-18