ZD6型转辙机用粉末冶金摩擦材料的制备及性能  

Fabrication and properties of powder metallurgy friction material for ZD6 switch machine

作　　者：杜军 冯驰原 陈少华 梅积钢 祝金明 尹彩流 DU Jun;FENG Chiyuan;CHEN Shaohua;MEI Jigang;ZHU Jinming;YIN Cailiu(Institute of Friction Materials,GuangXi Minzu University,Nanning 530006,China;Xi’an Railway Signal Co.,Ltd.,Xi’an 710100,China)

机构地区：[1]广西民族大学摩擦材料研究所,广西南宁530006 [2]西安铁路信号有限责任公司,陕西西安710100

出　　处：《粉末冶金工业》2022年第4期38-45,共8页Powder Metallurgy Industry

基　　金：广西自然科学基金资助项目(2019GXNSFAA185052);广西民族大学创新创业训练项目(202110608001)。

摘　　要：ZD6型转辙机摩擦材料的力学性能、摩擦因数、摩擦因数稳定性和磨损率决定了摩擦电流的稳定性从而最终影响轨道系统的正常运转。为了满足转辙机具有稳定可靠输出力的要求,选择适合转辙机使用工况的摩擦材料,对于提升道岔用转辙机的可靠性和安全性具有重要意义。针对ZD6型转辙机摩擦带在低温、高湿环境下摩擦稳定性低、磨损率高的问题,采用粉末冶金技术制备ZD6型转辙机用摩擦材料,在成熟配方基础上,研究对比添加不同种类的摩擦性能调节剂对材料综合力学性能和摩擦磨损性能的影响,并使用扫描电子显微镜(SEM)观察试样冲击断面形貌和摩擦表面形貌,对比分析5种不同摩擦性能调节剂对摩擦材料微观结构影响。结果表明:以人造石墨为摩擦性能调节剂的ZD6型转辙机摩擦材料磨损机理为磨粒磨损,其综合力学性能和摩擦磨损性能最优,最适合用作ZD6型转辙机粉末冶金摩擦带。The mechanical properties,friction coefficient,stability of friction coefficient and wear rate of friction materials of ZD6 switch machine determine the stability of friction current,which ultimately affect the normal operation of track system.In order to meet the requirements of stable and reliable output force of switch machine,selecting friction materials suitable for the working conditions of switch machine is of great significance.Aiming at the problems of low friction stability and high wear rate of ZD6 switch machine friction belt in low temperature and high humidity environment,the friction materials for ZD6 switch machine were prepared by powder metallurgy technology.On the basis of mature formula,the effects of different kinds of friction performance regulators on the comprehensive mechanical properties and friction and wear properties of the materials were studied and compared,and the impact section morphology and friction surface morphology of the samples were observed by scanning electron microscope(SEM).The wear mechanism of friction materials for ZD6switch machine with five different kinds of friction performance regulators was compared and analyzed.The results show that the wear mechanism of ZD6 switch machine friction material with artificial graphite as friction property regulator is abrasive wear,and its comprehensive mechanical properties and friction and wear properties are the best.It is the best choice for ZD6 switch machine powder metallurgy friction belt.

关 键 词：ZD6型转辙机 粉末冶金摩擦材料 摩擦性能调节剂 力学性能 磨损机理 

分 类 号：U284.722[交通运输工程—交通信息工程及控制] TF125.9[交通运输工程—道路与铁道工程]