Experimental study on the influence of friction pair material hardness on the tribological behaviors of water lubricated thrust bearings

Yang

et al. 2022

ILT

Purpose This study aims to investigate the effects of graphite-MoS2 composite solid lubricant on the tribological properties of copper-based bearing materials under dry conditions. Design/methodology/approach The mixture of Graphite-MoS2 was inlaid in ZQSn6-6–3 tin bronze and ZQAl9-4 aluminum bronze matrix. These copper-embedded self-lubricating bearing materials were considered in friction pairs with 2Cr13 stainless steel, and their tribological properties were studied by using an MM200 wear test machine. Findings The results show that the friction coefficients and wear rates of copper-embedded self-lubricating bearing materials are lower than those of the ordinary copper-based bearing materials. The wear performance of the tin bronze inlaid self-lubricating bearing material is better than that of the aluminum bronze inlaid self-lubricating bearing material. The wear mechanism of the tin bronze bearing material is mainly adhesive wear, and that of the aluminum bronze bearing material is mainly grinding wear, oxidation wear and adhesive wear. The copper-embedded self-lubricating bearing materials had no obvious abrasion, whereas the aluminum bronze inlaid self-lubricating bearing material exhibited deep furrows and obvious abrasion under high loads. Originality/value These results are helpful for the application of copper-embedded self-lubricating bearing materials.

Section: Resultsmentioning

confidence: 99%

Tribological properties of copper-embedded self-lubricating bearing materials

Yang

et al. 2022

ILT

“…After further friction, the metal abrasive particles embedded in the surface of the polymer material would appear hardening effect, and then grinding with the metal surface of the friction pair like "sandpaper". Two-body abrasive wear is converted into three-body abrasive wear [207], forming a so-called "soft wear hard".…”

Section: Main Wear Forms Of Wlbsmentioning

confidence: 99%

“…| https://mc03.manuscriptcentral.com/friction morphology of the thrust ring with aluminum bronze/Throden SXL friction pairs [86] and compared the wear results with stainless steel/PEEK friction pairs [209], which concluded that harder frictional subsets could increase the loading capacity of thrust bearings and reduce wear. Therefore, six sets of friction pairs with different hardness combinations as shown in Table 7 were tested and the results indicated that the increasing hardness of thrust rings would reduce the production possibility of abrasive particles and improve wear resistance [207].…”

Section: Frictionmentioning

confidence: 99%

Review of the evolution and prevention of friction, wear, and noise for water-lubricated bearings used in ships

et al. 2023

Self Cite

With the development of green tribology in the shipping industry, the application of water lubrication gradually replaces oil lubrication in stern bearings and thrust bearings. In terms of large-scale and high-speed ships, water-lubricated bearings with high performance are more strictly required. However, due to the lubricating medium, water-lubricated bearings have many problems such as friction, wear, vibration, noise, etc. This review focuses on the performance of marine water-lubricated bearings and their failure prevention mechanism. Furthermore, the research of marine water-lubricated bearings is reviewed by discussing its lubrication principle, test technology, friction and wear mechanism, and friction noise generation mechanism. The performance enhancement methods have been overviewed from structure optimization and material modification. Finally, the potential problems and the perspective of water-lubricated bearings are given in detail.

“…At the microscopic level, the peaks between the shaft and bearing are close together, resulting in high friction between the surfaces. During this stage, the changes in the friction mainly rely on the bearing material's performance impact [90,148,149]. Over time, the lubricant film gradually forms, reducing friction between the two surfaces.…”

Section: Analysis Of Bearing Lubrication Statusmentioning

confidence: 99%

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Peng,

Zhao,

Shangguan

et al. 2023

Coatings

With the significant penetration of wind generation, wind turbines require higher and higher lubrication performance for bearings. To improve the lubrication performance of wind power bearings, this study takes wind power bearings as the research object and comprehensively analyzes the wear forms of wind power bearings as well as intelligent lubrication methods. Firstly, the main roles and wear forms of wind turbine bearings are sorted out and analyzed. Secondly, the common lubrication problems of wind power bearings are analyzed from the bearing grease selection, lubrication mode, and lubrication status, highlighting the important influence of lubrication on bearings. Thirdly, the wind turbine bearing wisdom lubrication method research and organization, mainly including the wind power generation bearing lubrication materials, lubrication devices and monitoring methods, and other issues of research and analysis. Finally, current challenges and future development directions are summarized, which are designed to provide theoretical reference and technical support for the related research and engineering practice in the field of wind power engineering.