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Materials 2017, 10(6), 630; doi:10.3390/ma10060630

Effects of Strand Lay Direction and Crossing Angle on Tribological Behavior of Winding Hoist Rope

1
School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
2
Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining & Technology, Xuzhou 221116, China
3
College of Mechanical Engineering, Chongqing University, Chongqing 400044, China
4
CITIC Heavy Industries Co. Ltd., Luoyang 471039, China
5
Luoyang Mining Machinery Engineering Design Institute, Luoyang 471039, China
*
Author to whom correspondence should be addressed.
Academic Editor: Auezhan Amanov
Received: 30 March 2017 / Revised: 31 May 2017 / Accepted: 7 June 2017 / Published: 9 June 2017
(This article belongs to the Special Issue Tribological Behavior of Materials by Surface Engineering)
View Full-Text   |   Download PDF [14475 KB, uploaded 9 June 2017]   |  

Abstract

Friction and wear behavior exists between hoisting ropes that are wound around the drums of a multi-layer winding hoist. It decreases the service life of ropes and threatens mine safety. In this research, a series of experiments were conducted using a self-made test rig to study the effects of the strand lay direction and crossing angle on the winding rope’s tribological behavior. Results show that the friction coefficient in the steady-state period shows a decreasing tendency with an increase of the crossing angle in both cross directions, but the variation range is different under different cross directions. Using thermal imaging, the high temperature regions always distribute along the strand lay direction in the gap between adjacent strands, as the cross direction is the same with the strand lay direction (right cross contact). Additionally, the temperature rise in the steady-state increases with the increase of the crossing angle in both cross directions. The differences of the wear scar morphology are obvious under different cross directions, especially for the large crossing angle tests. In the case of right cross, the variation range of wear mass loss is larger than that in left cross. The damage that forms on the wear surface is mainly ploughing, pits, plastic deformation, and fatigue fracture. The major wear mechanisms are adhesive wear, and abrasive and fatigue wear. View Full-Text
Keywords: wire rope; strand lay direction; crossing angle; friction; wear wire rope; strand lay direction; crossing angle; friction; wear
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Chang, X.-D.; Peng, Y.-X.; Zhu, Z.-C.; Gong, X.-S.; Yu, Z.-F.; Mi, Z.-T.; Xu, C.-M. Effects of Strand Lay Direction and Crossing Angle on Tribological Behavior of Winding Hoist Rope. Materials 2017, 10, 630.

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