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Grease effect on fretting wear of mild steel

Grease effect on fretting wear of mild steel Purpose – The aim of this paper is to research grease and additives' influence on fretting wear of mild steel. Design/methodology/approach – Experiments were performed on a laboratory stand with contact conditions cylinder on flat. The mild steel couples were tested under dry conditions and lubricated with mineral and synthetic greases containing as additives: graphite, molybdenum disulphide, ZDDP and molybdenum dithiocarbamate in different concentrations. Findings – The results revealed a significant influence of grease consistency and its welding load on the fretting wear of steel couples. Graphite and molybdenum disulphide were effective in a 10 percent concentration. ZDDP additive in a more than 1 percent concentration increased fretting wear. Molybdenum dithiocarbamate was not more effective than molybdenum disulphide powder. Grease lubrication of the fretted couple changed significantly the wear mechanism observed on SEM photographs of fretting scars. Practical implications – The paper presents some indications of proper selection of grease for fretting prevention. Originality/value – The influence of the main features of grease on fretting wear was confirmed on the basis of extensive investigation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

Grease effect on fretting wear of mild steel

Antoni Neyman; Jan Sikora
Industrial Lubrication and Tribology , Volume 60 (2): 12 – Mar 7, 2008
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References (9)

Publisher
Emerald Publishing
Copyright
Copyright © 2008 Emerald Group Publishing Limited. All rights reserved.
ISSN
0036-8792
DOI
10.1108/00368790810858368
Publisher site
See Article on Publisher Site

Abstract

Purpose – The aim of this paper is to research grease and additives' influence on fretting wear of mild steel. Design/methodology/approach – Experiments were performed on a laboratory stand with contact conditions cylinder on flat. The mild steel couples were tested under dry conditions and lubricated with mineral and synthetic greases containing as additives: graphite, molybdenum disulphide, ZDDP and molybdenum dithiocarbamate in different concentrations. Findings – The results revealed a significant influence of grease consistency and its welding load on the fretting wear of steel couples. Graphite and molybdenum disulphide were effective in a 10 percent concentration. ZDDP additive in a more than 1 percent concentration increased fretting wear. Molybdenum dithiocarbamate was not more effective than molybdenum disulphide powder. Grease lubrication of the fretted couple changed significantly the wear mechanism observed on SEM photographs of fretting scars. Practical implications – The paper presents some indications of proper selection of grease for fretting prevention. Originality/value – The influence of the main features of grease on fretting wear was confirmed on the basis of extensive investigation.

Journal

Industrial Lubrication and Tribology – Emerald Publishing

Published: Mar 7, 2008

Keywords: Wear; Additives; Lubrication; Oils; Fats and waxes; Steel

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