Friction and Wear Characteristics of Spherical Plain Bearings with PTFE Woven Liners

2011 ◽  
Vol 199-200 ◽  
pp. 763-766 ◽  
Author(s):  
Ming Qiu ◽  
Zhi Lun Gao ◽  
Guo Feng Wang ◽  
Long Chen
Keyword(s):  
Friction And Wear ◽  
Dry Sliding ◽  
Wear Depth ◽  
Heavy Load ◽  
Comprehensive Performance ◽  
Increasing Trend ◽  
Friction Temperature ◽  
Spherical Plain Bearing ◽  
Friction And Wear Characteristics

The friction and wear behaviors of three kinds of spherical plain bearings with PTFE woven liners were investigated by a high oscillating frequency and heavy load tribo-tester. Dry sliding tests were carried out at an oscillating frequency of 1.2Hz and four different loads. With the help of SEM and EDS, the differences of worn surfaces of the three kinds were investigated. The results indicate that the wear depth and friction temperature for the three kinds of bearings show increasing trend with the increasing of load, while the friction coefficient is the opposite. The comprehensive performance of bearing II is the best in the whole course of experiment, while the bearing III is the worst. The adhesive and abrasive wear mechanisms are appeared on the surface of liners. The quality of boning influences the tribological property of the spherical plain bearing.

Tribological Properties of Spherical Plain Bearings with Self-Lubricating PTFE Woven Liners

2011 ◽  
Vol 338 ◽  
pp. 607-610 ◽  
Author(s):  
Ming Qiu ◽  
Zhi Lun Gao ◽  
Guo Feng Wang ◽  
Long Chen
Keyword(s):  
Abrasive Wear ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Dry Sliding ◽  
Heavy Load ◽  
Wear Characteristics ◽  
Fabric Composite ◽  
Composite Liners ◽  
Friction And Wear Characteristics

The friction and wear behaviors of three kinds of spherical plain bearings with PTFE fabric composite liners were investigated by a high oscillating frequency and heavy load tribo-tester. Dry sliding tests were carried out at different oscillating frequencies. With the help of SEM and EDS, the differences of worn surfaces of the three spherical bearings were investigated. The results indicate that the fiber woven with PTFE effects the friction and wear characteristics of bearing, the tribological properties of bearing with Kevlar/PTFE fiber woven liner is the best in the three kinds of bearing. The abrasive wear are appeared on the surface of wore liners of bearingⅠ,while bearingⅡappeared normal wear, bearing III showed serious adhesive wear and abrasive wear.

scholarly journals Friction and Wear Characteristics of 18Ni(300) Maraging Steel under High-Speed Dry Sliding Conditions

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1485
Author(s):  
Kun Sun ◽  
Weixiang Peng ◽  
Binghui Wei ◽  
Longlong Yang ◽  
Liang Fang
Keyword(s):  
Maraging Steel ◽  
High Speed ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Dry Sliding ◽  
X Ray Diffraction ◽  
X Ray ◽  
Friction And Wear Characteristics ◽  
Increasing Load ◽  
Worn Surfaces

18Ni(300) maraging steel, which has exceptional strength and toughness, is used in the field of aviation and aerospace. In this paper, using a high-speed tribo-tester, tribological behaviors of 18Ni(300) maraging steel were investigated under high-speed dry sliding conditions. Morphology of the worn surfaces and the debris was analyzed by scanning electron microscope, and the oxides of worn surfaces caused by friction heat were detected by X-ray diffraction. The experiment results reveal that the friction coefficient of frictional pairs declines with increasing load and speed. With the speed and load increasing, oxides of the worn surfaces of 18Ni(300) maraging steel change from FeO to Fe3O4 and the wear mechanism converts from adhesive wear into severe oxidative or extrusion wear.

Effect of hBN content on the friction and wear characteristics of B4C–hBN ceramic composites under dry sliding condition

2015 ◽  
Vol 41 (3) ◽  
pp. 3918-3926 ◽  
Author(s):  
Xiuqing Li ◽  
Yimin Gao ◽  
Wu Pan ◽  
Zhichao Zhong ◽  
Liancheng Song ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Ceramic Composites ◽  
Dry Sliding ◽  
Wear Characteristics ◽  
Friction And Wear Characteristics

Research on Friction and Wear Characteristics Based on Different Texture Angles of Milling Topography

2021 ◽  
Author(s):  
Lei Zhang ◽  
Minli Zheng ◽  
Wei Zhang ◽  
Kangning Li
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Stress Distribution ◽  
Friction And Wear ◽  
Simulation Analysis ◽  
Wear Depth ◽  
Key Factor ◽  
Industrial Designers ◽  
The Relationship ◽  
Friction And Wear Characteristics

Abstract In the field of mold manufacturing, the wear resistance of the mold is a key factor affecting the life of the mold. In order to extend the life of the mold, most scholars have invested a lot of research on the surface texture of the mold. This article mainly analyzes the influence of the texture angle of different milling topography on the wear resistance of the mold. First, we studied the formation process of the milling topography, and distinguished the quadrilateral pit topography and the hexagonal pit topography by defining the texture angle. Secondly, we carried out a wear simulation analysis on the slider with a texture angle, and studied the influence of different topography on the wear depth and stress distribution. Finally, with the help of friction and wear experiments, the wear amount of the slider with different texture angles is tested, and the relationship between the texture angle, the wear quality and the friction coefficient is analyzed. The conclusions obtained provide an effective reference for industrial designers to prepare wear-resistant molds.

Effect of Niobium on the Dry Sliding Friction and Wear Properties of 100Cr6 Bearing Steel

2018 ◽  
Vol 140 (6) ◽  
Author(s):  
He Guo-Ning ◽  
Zhou Ning-Bo ◽  
Zhang Chao-lei ◽  
Ba Xin-yu ◽  
Liu Ya-Zheng
Keyword(s):  
Friction Coefficient ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Bearing Steel ◽  
Dry Sliding ◽  
Wear Depth ◽  
Wear Properties ◽  
Nb Content ◽  
Friction And Wear Properties ◽  
Dry Sliding Friction

In this work, the dry sliding friction and wear properties were studied by wear test for 100Cr6 bearing steel when Nb content was 0.018% and 0.040%. In addition, in order to explain the differences, the experimental samples were processed for spheroidizing annealed and the quenched-tempered microstructure and hardness was analyzed. The result indicated that their friction coefficient was decreased to 0.047 when Nb content was 0.018% and the worn surface is microcutting and spalling without plowing. When Nb content was 0.040%, the friction coefficient was decreased to 0.006 and maximum wear depth was the deepest owing to obvious cutting. In order to increase the properties of the friction and wearing, Nb content should be decreased. With Nb content increased, the properties of the friction and wearing are decreased. The incorporation of Nb into bearing steel promotes the formation of martensite and carbide particles, which results in the diversity of the wear behaviors, eventually.

scholarly journals Comparison of the Friction and Wear Characteristics between Copper and Paper Based Friction Materials

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2988 ◽  
Author(s):  
Yu ◽  
Ma ◽  
Chen ◽  
Li ◽  
Ma ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Friction And Wear ◽  
Applied Load ◽  
Friction Material ◽  
Wear Depth ◽  
Friction Materials ◽  
Wear Characteristics ◽  
Rotating Speed ◽  
Ambient Temperatures ◽  
Friction And Wear Characteristics

Copper-based friction material (CFM) and paper-based friction material (PFM) are the two most commonly used clutch friction materials. The friction and wear characteristics of these two kinds of friction materials under dry conditions were investigated by the pin-on-disc test over a broad range of applied loads, rotating speeds and ambient temperatures. Before experiments, the running-in test was conducted to stabilize the coefficient of friction (COF) and wear amount of the test samples. After experiments, the metallographic micrographs of the tested samples were presented to investigate the wear mechanisms. Experimental results showed that both the COF and wear depth of the CFM are much greater than these of PFM. The COF of CFM decreases with the increase of applied load, and changes slightly with the variation of rotating speed, whereas it increases first and then decreases with the increase of ambient temperature. However, the COF of PFM decreases dramatically with the increase of the rotating speed and ambient temperature, while it remains stable at first and then decreases slowly as the applied load increases. Additionally, under such three working conditions, the wear depth of CFM changes linearly, while the wear depth of PFM varies greatly. This study can be used as a guide for selecting friction materials for clutches with different applications.

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