摘要
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合金基体组成再生复合材料辊环,采用MMS-1G高速销-盘摩擦磨损试验机、扫描电镜(SEM),研究了100N、150N和200N载荷下滑动速度对再生复合辊环摩擦性能的影响。结果表明,不同载荷条件下,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,而摩擦系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,而摩擦系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。
The wear-resistance performance of recycled WCp reinforced composites roller collar produced by re-melting waste composites roller and by centrifugal casting, was studied using SEM and MMS-1G high speed pin-disk friction and wear testing machine under 100 N, 150 N and 200 N load and different sliding speed. The recycled composites collar was combination of the Fe-C alloy core material with composite surface layer enhanced by WCp. The test results show that, with the increase of sliding speed, the worn rate of recycled composite layer shows a slight fluctuation, and the friction coefficient shows decreasing first and then increasing slowly thereafter. With the increase of load under same sliding speed, worn rate shows obviously increasing with friction coefficient decreasing. In the low speed condition, worn mechanisms of recycled composites collar are mainly plowing wear and plastic formation, and under the higher speed, worn mechanisms are present the features of abrasive wear adhesion wear and oxidative wear.
出处
《铸造技术》
CAS
北大核心
2011年第11期1524-1527,共4页
Foundry Technology
关键词
离心铸造
再生复合辊环
滑动速度
摩擦性能
Centrifugal casting
Recycled composites col lar
Sol iding speed
Friction property
