【摘要】 为研究性能优越且成本可控的蠕墨铸铁制动鼓材料,采用MG-2000型摩擦磨损试验机对不同蠕化率的蠕墨铸铁及灰铸铁进行干滑动摩擦磨损实验。结果表明:与HT250相比,蠕墨铸铁的耐磨性明显增强,相同条件下的耐磨性约为HT250的1.4～4.5倍,且随着载荷与磨损速度的增加,优越性更为明显。蠕墨铸铁的耐磨性随蠕化率升高而降低,其中Ru60的耐磨性比Ru90高69%～76%。更多还原

【Abstract】 In order to study the brake drum material of compacted graphite cast iron with superior performance and controllable cost, dry sliding friction and wear tests of compacted graphite cast iron and gray cast iron with different vermicular rate were carried out by MG-2000 friction and wear tester. The results show that the wear resistance of compacted graphite cast iron is 1.4—4.5 times higher than that of HT250 under the same conditions, and the superiority is more obvious with the increase of load and wear speed. The wear resistance of compacted graphite cast iron decreases with the increase of vermicularity, and the wear resistance of Ru60 is 69%—76% higher than that of Ru90.更多还原