Study on Tribological Properties and Wear Mechanism of 40Cr/Graphite Spherical Plain Bearings

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Study on Tribological Properties and Wear Mechanism of 40Cr/Graphite Spherical Plain Bearings

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[1]LIANG Jie,ZHANG Zhiqiang,GAO Jingang.Study on Tribological Properties and Wear Mechanism of 40Cr/Graphite Spherical Plain Bearings[J].Journal of Zhengzhou University (Engineering Science),2022,43(02):65-70.[doi:10.13705/j.issn.1671-6833.2022.02.017]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 43卷 Number of periods: 2022 02 Page number: 65-70 Column: Public date: 2022-02-27

Title:: Study on Tribological Properties and Wear Mechanism of 40Cr/Graphite Spherical Plain Bearings

Author(s):: LIANG Jie¹; ZHANG Zhiqiang¹; GAO Jingang²; 1.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China;
2.Shenyang Xintong Power Station Equipment Manufacturing Co.， Ltd., Shenyang 110136, China

Keywords:: 40Cr; graphite; self-lubricating spherical plain bearing; tribological properties; wear mechanism

CLC:: TH117.1

DOI:: 10.13705/j.issn.1671-6833.2022.02.017

Abstract:: A 40Cr/graphite spherical plain bearing was developed to meet the requirement that PTFE and copper parts were not allowed to be used in self-lubricating spherical plain bearings for a nuclear power damper. In order to study the influence of the swing condition of the hydraulic damper on the spherical plain bearing, 50 000 swing friction tests were carried out on the spherical plain bearing under the radial load of 10 kN, the swing frequency of 1 Hz and the swing amplitude of ±5° by using the self-developed spherical plain bearing load simulator. Then the tribological properties of graphite and 40Cr were analyzed by using the friction torque, radial wear and friction temperature recorded during the test. Finally, the wear mechanism of the spherical plain bearing under test conditions was discussed by the microstructure of graphite inner ring obtained by double beam scanning electron microscope. The results showed that the wear quantity, friction coefficient and temperature increased greatly in the running-in stage, and then transition to the stable wear stage. At the later stage of the stable wear stage, they all showed a slight upward trend. During the whole swing wear process, the bearing moved well without jamming. After the test, the radial wear amount of graphite inner ring was 112 μm, and the mass decreased by 0.02 g. The wear mechanism of graphite inner ring is different at different contact positions. The core bearing area is mainly abrasive wear, fatigue wear and adhesive wear, while the non-core bearing area is mainly abrasive wear.

References:: ［1］韩翠红，石佳东，刘云帆，等．关节轴承自润滑材料摩擦学性能及轴承寿命预测研究现状［J］．材料导报，2021，35( 5) : 5166－5173．
［2］王彻，杨丽颖，王守仁，等．新型关节轴承材料的研究现状及展望［J］．轴承，2018( 10) : 62－66．
［3］袁军亚，杨明明，李佩隆，等．自润滑关节轴承用织物衬垫摩擦学研究进展［J］．摩擦学学报，2021，41 ( 2) : 280－292．
［4］中华人民共和国国家发展和改革委员会．关节轴承动载荷与寿命试验规程: JB/T 10860—2008［S］．北京: 机械工业出版社，2008．
［5］卢建军．自润滑向心关节轴承失效机理及寿命评估方法研究［D］．西安: 西北工业大学，2017．
［6］ CHAI L Q，JIANG H X，ZHANG B B，et al．Influence of the gamma irradiation dose on tribological property of polytetrafluoroethylene［J］． Tribology international， 2020，144: 106094．
［7］ YASSIEN K M，EL-ZAHHAＲ A A．Investigation on the properties of gamma irradiated of polytetrafluoroethylene fibers［J］． Microscopy research and technique，2019，82 ( 12) : 2054－2060．
［8］王超，丛国辉，许雪飞，等．γ 射线辐照聚四氟乙烯复合材料的结构和摩擦磨损性能研究［J］．摩擦学学报，2021，41( 4) : 503－511．

［9］吕柏林，崔跃，高学朋，等．石墨摩擦学性能、润滑机理及改性的研究进展［J］．材料导报，2015，29( 19) : 60－66．

［10］ WOS S，KOSZELA W，PAWLUS P． The effect of graphite surface texturing on the friction reduction in dry contact ［J］． Tribology international，2020， 151: 106535．

［11］王文东，薛春，熊蜀冰．γ 射线辐照前后高强石墨的摩擦学行为及其磨损机制［J］．机械工程材料， 2016，40( 3) : 66－69，73．

［12］ JIN J，PENG X D，JIANG J B，et al．Frictional characteristics of impregnated graphite with different graphitization degree versus chromium stainless steel under varying PV values［J］． Tribology international，2020， 146: 106063．

［13］ DING H Q．Comparative study on tribological properties of isostatic graphiteand carbon graphite under dry sliding and water-lubricated conditions ［EB/OL］． ( 2020 － 10 － 01) ［2021 － 08 － 21］． https: / / researchgate．net /．

［14］ HIＲATSUKA K，MAＲIKO Ｒ，TSUTSUMI T．Effects of sliding speed，periodic pauses，and atmospheric moisture content on the wear of graphite against cast iron［J］．Wear，2019，424－425: 255－260．

［15］中华人民共和国工业和信息化部．关节轴承额定动载荷与寿命: JB/T 8565—2010［S］．北京: 机械工业出版社，2010．

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Last Update: 2022-02-25