Amanov Auezhan, Ahn Byungmin, Lee Moon Gu, Jeon Yongho, Pyun Young-Sik
Department of Mechanical Engineering, Sun Moon University, Asan 31460, Korea.
Department of Materials Science, Engineering and Energy Systems Research, Ajou University, Suwon 16499, Korea.
Materials (Basel). 2016 Nov 22;9(11):950. doi: 10.3390/ma9110950.
An anti-friction Babbitt alloy-coated bearing made by a casting process is a journal bearing, which is used in an ore cone crusher eccentric. The main purpose of the Babbitt coated eccentric is to provide a low friction to support and guide a rotating shaft. Despite the fact that the Babbitt-coated eccentric offers a low friction coefficient and can be operated without a continuous supply of lubricant, it suffers from mining environments and short service life. In this study, an ultrasonic nanocrystalline surface modification (UNSM) technique was used to further reduce the friction coefficient, to increase the wear resistance, and to extend the service life of the Sn-based Babbitt metal. The friction and wear behavior of the Sn-based Babbitt metal was investigated using a block-on-ring tester under both dry and oil-lubricated conditions. The results of the experiments revealed that the friction and wear behavior of Sn-based Babbitt metal could be improved by the application of the UNSM technique. The friction and wear mechanisms of the specimens were explained and discussed in terms of changes in surface properties-microstructure, surface hardness, surface roughness, etc.
通过铸造工艺制造的减摩巴氏合金涂层轴承是一种轴颈轴承，用于矿用圆锥破碎机的偏心轮。巴氏合金涂层偏心轮的主要目的是提供低摩擦力，以支撑和引导旋转轴。尽管巴氏合金涂层偏心轮具有低摩擦系数，且无需持续供应润滑剂即可运行，但它在采矿环境中存在问题且使用寿命较短。在本研究中，采用超声纳米晶表面改性（UNSM）技术进一步降低摩擦系数、提高耐磨性并延长锡基巴氏合金的使用寿命。使用销盘试验机在干摩擦和油润滑条件下研究了锡基巴氏合金的摩擦磨损行为。实验结果表明，应用UNSM技术可以改善锡基巴氏合金的摩擦磨损行为。根据表面性能（微观结构、表面硬度、表面粗糙度等）的变化对试样的摩擦磨损机制进行了解释和讨论。
