高碳制动鼓摩擦磨损性能  

Friction and Wear Properties of High Carbon Brake Drum

作　　者：元亚莎 王文焱[1] 袁留伟 谢敬佩[1] 许开辉[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]中信重工机械股份有限公司,河南洛阳471003

出　　处：《河南科技大学学报（自然科学版）》2014年第6期1-4,117,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省重大科技攻关基金项目(6020091020132-1)

摘　　要：针对铸铁材料在汽车制动鼓应用中出现的失效情况,运用扫描电子显微镜和摩擦磨损试验机,研究了在不同的摩擦磨损参数条件下HT250和高碳灰铁的摩擦磨损性能;并结合其金相组织和力学性能,探讨了材料微观组织和性能的关系以及其摩擦磨损机理。研究结果表明:高碳当量的灰铸铁和HT250在石墨形态上相似,石墨均为A级,长条状;抗拉强度分别为220 MPa和273 MPa。通过进行摩擦磨损试验发现:在不同的摩擦磨损条件下,高碳灰铁的耐磨性优于HT250。For the failure of cast iron in the application of brake drums,the friction and wear properties of HT250 and high-carbon gray iron under the condition of different parameters were studied by means of scanning electron microscopy and friction wear testing machine respectively. With the two materials microstructure and mechanical properties,the relationship between microstructure and properties of the materials,and friction wear mechanism were researched. The results show that graphites of high-carbon gray iron and HT250 are all grade A and long strips,and the tensile strength are 220 MPa and 273 MPa respectively. The wearing resistance of high-carbon gray iron is better than that of HT250 at different friction and wear conditions.

关 键 词：制动鼓 高碳 磨损 耐磨性 

分 类 号：TG156.1[金属学及工艺—热处理]