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通过对回收的废旧复合辊环材料进行重熔和离心铸造,制备了由耐磨WCp颗粒增强的复合层与Fe-C合金基体组成的再生复合材料辊环,并采用MMS-1G高速销-盘摩擦磨损试验机、扫描电镜(SEM),研究了在100、150和200N载荷下滑动速度对再生复合辊环的摩擦性能的影响。结果表明,在100、150和200N载荷条件下,随滑动速度的增加,再生复合辊环的磨损率均出现幅度很小的波动现象,而摩擦因数先降低后缓慢增加。在相同滑动速度条件下,磨损率明显随载荷的增加而增大,而摩擦因数随载荷的增加而降低。再生复合辊环在低速条件下的磨损机理主要为犁沟磨损和塑性变形,而当滑动速度较高时,表现为粘着磨损、氧化磨损和磨粒磨损。
By remelting and centrifugal casting of waste recycled composite roller ring material, a regenerated composite roller ring composed of a composite layer strengthened with wear-resistant WCp particles and an Fe-C alloy matrix was prepared and the high-speed pin-plate MMS-1G The friction and wear tester and the scanning electron microscope (SEM) were used to study the influence of the sliding speed on the friction performance of the regenerated composite roll ring under the loads of 100, 150 and 200N. The results show that under the load of 100, 150 and 200N, with the increase of the sliding speed, the wear rate of the regenerated composite roll ring fluctuates with a small amplitude, while the friction coefficient firstly decreases and then increases slowly. At the same sliding speed, the wear rate obviously increases with the increase of load, while the friction coefficient decreases with the increase of load. The wear mechanism of the regenerated composite roll ring at low speed is mainly furrow and plastic deformation, while when the sliding speed is high, it shows adhesive wear, oxidized wear and abrasive wear.