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采用移动坩埚式喷射共沉积技术及其装置以及大型环件楔形压制致密化技术成功地制备了高速列车用Al-20%Si/SiCp复合材料制动盘,通过自行研制的MM-1000摩擦磨损试验机,探索出了与之配副的摩擦材料配方,采用共混改性及二次压制技术制备出了制动盘用半金属树脂基复合材料闸片。制动盘及其闸片进行了1:1台架实验,试验模拟轴重21t、制动最高时速200km。实验结果表明:摩擦系数基本上在0.35 ̄0.38之间;闸片磨耗量为0.18 g/MJ;制动曲线平稳;制动过程无火花、烟尘、气味等。表明在紧急制动(干态)、常用制动(干态)、常用制动(加水)、坡道和静摩擦等方面均达到了很好的效果,基本上达到了装车试运用的要求。
Al-20% Si / SiCp composite brake discs for high-speed trains were successfully prepared by mobile crucible jet co-deposition technology and its devices as well as the wedge-shaped densification and densification of large rings. The MM-1000 friction and wear test Machine, to explore with its deputy friction material formulations, the use of blending modification and secondary suppression technology to prepare a brake disc with a half-metal resin-based composite brake. The brake disc and brake discs were subjected to a 1: 1 bench test. The test axle weight was 21t and the maximum braking speed was 200km per hour. The experimental results show that the friction coefficient is basically between 0.35 and 0.38, the brake wear amount is 0.18 g / MJ, the braking curve is stable, and there is no spark, soot and smell during braking. It shows that the system has achieved good results in emergency braking (dry state), common braking (dry state), common braking (water addition), ramp and static friction, and basically meets the requirements of trial loading and loading.