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Research Article | Open Access

Examination on the wear process of polyformaldehyde gears under dry and lubricated conditions

Guoda YU1, Huaiju LIU1( ), Ken MAO2, Caichao ZHU1, Zehua LU1
State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400030, China
School of Engineering, the University of Warwick, Coventry CV4 7AL, UK
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Abstract

This study presents the results of detailed wear process examination on polyformaldehyde gears under both dry and lubricated conditions. A multi-purpose durability test rig was employed to study the wear performance of polyformaldehyde gear pairs. The wear behaviors of polyformaldehyde gears under dry and oil-lubricated operating conditions were characterized via measurements of gear tooth surface micro-topography and tooth profile deviation. Under the dry running condition, a hump and a gully appear on the tooth surface in the pitch line area of the driving gear and the driven wheel, respectively. The largest amount of wear was observed around the tooth root of the driving gear. However, the gear tooth wear pattern with lubrication is different from that under the dry running condition.

Keywords

polyformaldehyde gearlubricationwearsurface damage

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Friction
Volume 9 Issue 3,
June 2021
Pages 538-550
DOI: 10.1007/s40544-020-0362-7

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Cite this article:
YU G, LIU H, MAO K, et al. Examination on the wear process of polyformaldehyde gears under dry and lubricated conditions. Friction, 2021, 9(3): 538-550. https://doi.org/10.1007/s40544-020-0362-7

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Received: 04 September 2019
Revised: 28 November 2019
Accepted: 04 January 2020
Published: 08 August 2020
© The author(s) 2020

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