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热塑性聚乙烯塑料,是制造汽车制动阀门的新材料。根据试验情况和几年来的使用经验,证明其各项物理化学性能都能满足使用要求,是一种比较理想的值得推广的新材料。我们从1978年底开始采用聚乙烯塑料试制解放牌CA—10B型汽车制动阀阀门。经过反复研究和试验,取得了初步成果。并在此基础上逐步扩大使用,现已制成黄河JT—680型和东风JT—662型大客车制动阀及CA—10B型载货汽车的挂车制动阀和东风EQ—140型汽车的空压机压力调节阀,取代了原车的橡胶衬垫金属阀门。经过几年的实践证明,这种新材料阀门的机械强度、耐磨性和可靠性等,都比原设计的好,为安全运输生产提供了保证,并取得了令人满意的经济效果。一、国产常用汽车的气制动阀的技术状况众所周知,气压制动系统结构简单,调整方便,性能良好,在国产汽车上得到普遍的应用。常用的气制动阀的进排气阀有两种式型:
Thermoplastic polyethylene plastic is the new material used to make brake valves for cars. According to the experimental conditions and years of experience in using, to prove that its physical and chemical properties can meet the requirements, is an ideal worth promoting new materials. We started from the end of 1978 using polyethylene plastic trial release Jiefang card CA-10B type car brake valve. After repeated research and experiments, achieved initial results. And on this basis, gradually expand the use of the Yellow River has been made JT-680-type and Dongfeng JT-662-type bus brake valves and CA-10B truck trailer brake valve and Dongfeng EQ-140-type car Air compressor pressure control valve, replacing the original car rubber gasket metal valve. After several years of practice has proved that the new material valve mechanical strength, wear resistance and reliability, are better than the original design, to provide a guarantee for the safe transport and achieved satisfactory economic results. First, the domestic common car’s gas brake valve technology As we all know, the pressure brake system has a simple structure, easy adjustment, good performance, made in the domestic car universal application. Commonly used gas brake valve into the exhaust valve has two types: