The aim of this work was to investigate the sliding wear coefficient k, using an experimental sliding wear study on the valve-seat insert contact. Commercial inlet valve and seat inserts were used as test specimens. The tests were performed at room temperature and at 200℃, using test duration of 72,000 cycles and 18,000 cycles, respectively, and both in dry sliding conditions. A load of 5 N, an average speed of 22 mm/s and sliding distance of 2.2 mm were used for all tests. The sliding wear coefficients were calculated using experimental and analytical methods. The wear volume was higher in the tests at 200℃ both in valve and seat insert specimens. The principal wear mechanisms observed in valve specimen were oxidation and abrasion.
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机译：这项工作的目的是通过对阀座插入件接触面进行实验性滑动磨损研究来研究滑动磨损系数k。使用商用进水阀和阀座插件作为测试样本。试验在室温和200℃下进行，试验持续时间分别为72,000个循环和18,000个循环，并且均在干滑条件下进行。所有测试均使用5 N的负载，22 mm / s的平均速度和2.2 mm的滑动距离。使用实验和分析方法计算滑动磨损系数。阀门和阀座插入件试样在200℃的试验中磨损量都较高。阀门样品中观察到的主要磨损机理是氧化和磨损。
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