碳陶制动盘特性及在轨道车辆上的应用研究

Characteristics of C/Ceramic brake discs and their application in rail vehicles

文章通过缩比试验台、1∶1汽车台架和高速列车1:1试验台研究了碳陶材料的摩擦磨损性能。在不同的转速下对比传统的铸钢摩擦材料做摩擦磨损对比试验,并且在干、湿和结冰条件下以及匹配粉末冶金闸片摩擦副研究了碳陶材料摩擦磨损性能。试验结构表明:碳陶材料具有稳定摩擦特性,低磨损率和较强的环境适应性等特点;碳陶材料具有优异的粉末冶金闸片匹配性,平均摩擦因数稳定在0.32,制动性能满足国际铁路联盟规程UIC541-3标准,具有替代现有基础制动材料的优势。文章针对碳陶材料的研究为制动材料发展提供了理论基础,使碳陶材料用于高速列车制动成为可能。

Friction and wear properties of carbon ceramic materials are studied by means of a scaled test bench,including a 1:1 automobile bench and a 1:1 high-speed train test bench.Comparative experiments are conducted on the friction and wear performance of traditional cast steel friction materials at different rotational speeds,and the friction and wear properties of carbon ceramic materials are studied under dry,wet,and icing conditions,as well as matching powder metallurgy brake pad friction pairs.Test results indicate that the carbon ceramic material is characterized by stable friction,low wear rate,strong environmental adaptability,excellent matching with the powder metallurgy brake pads with an average friction factor stable at 0.32,and its braking performance meets UIC541-3 standard and can preponderantly replace existing basic braking materials.The research on carbon ceramic materials provides a theoretical basis for the development of brake materials,which makes it possible for carbon ceramic materials to be used in the braking operation of high-speed train.