| XU Shao-nan,FAN Wen-xin,LI Rui-lin.Wear Performance of Bushing Material by Counterface Material after Carburizing Treatment[J],51(9):120-130 |
| Wear Performance of Bushing Material by Counterface Material after Carburizing Treatment |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.09.012 |
| KeyWord:QSn7-0.2 alloy CuNi6Sn6 alloy carburizing treatment friction coefficient extrusion load wear mechanism |
| Author | Institution |
| XU Shao-nan |
School of Mechanical Engineering, North University of China, Taiyuan , China |
| FAN Wen-xin |
School of Mechanical Engineering, North University of China, Taiyuan , China |
| LI Rui-lin |
School of Mechanical Engineering, North University of China, Taiyuan , China |
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| Abstract: |
| The work aims to provide a theoretical basis for improving the friction and wear performance and extreme pressure load of bushing materials, and then explore the applicable working conditions. SRV-IV fretting friction and wear tester was used to carry out friction and wear test. The effects of carburizing treatment on friction and wear performance of 2 kinds of bushing materials in common use were studied under simulated actual working conditions. Three-dimensional scanning instrument, scanning electron microscope and composition analyzer were used to explore the wear mechanism. After carburizing treatment of counterface materials, QSn7-0.2 alloy entered the stable wear stage 25% earlier, with average friction coefficient increasing by 2.23%, average wear quality increasing by 26.53%, and extreme pressure load decreasing by 50.86%. CuNi6Sn6 alloy entered the stable wear stage about 50% earlier, with average friction coefficient decreasing by 10.22%, average wear quality decreasing by 9.09%, and extreme pressure load decreasing by 58.63%. For the counterface materials without carburizing treatment, the wear mechanism of QSn7-0.2 alloy was mainly abrasive wear, accompanied by slight adhesive wear, and the wear mechanism of CuNi6Sn6 alloy was mainly pitting wear, accompanied by a small amount of abrasive wear. After carburizing treatment of counterface materials, the wear mechanism of QSn7-0.2 alloy was delamination wear, accompanied by slight adhesive wear and abrasive wear, while the wear mechanism of CuNi6Sn6 alloy was mainly adhesion wear, accompanied by adhesive wear and a small amount of abrasive wear. After carburizing treatment of counterface materials, the average friction coefficient and wear quality of QSn7-0.2 alloy increase. The average friction coefficient and wear quality of CuNi6Sn6 alloy decrease correspondingly, but the reduction of extrusion load is relatively larger. Therefore, CuNi6Sn6 alloy is suitable for the carburized counterface materials under low extrusion condition. QSn7–0.2 alloy is suitable for the working conditions of the workpiece to be ground without carburizing treatment under high ultimate pressure. |
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