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随着车辆检修向新方式的过渡,检修周期也大幅度地延长,这就要求车辆各零部件性能要比过去更为耐久。作为车辆制动装置部件之一的制动缸,在两次厂修之间为了维修合理化而不再补充油脂。但却会因为缺油而造成制动缸动作不良,特别是在严冬季节,由于润滑脂及皮碗的硬化,会造成制动缸更为严重的漏泄及动作不良等故障。因此,为了寻求防止这些故障的措施,试制了具有耐磨、耐寒性能高的橡胶皮碗和探讨了润滑脂的适应性能,并从1972年开始,进行
With the vehicle overhaul to the new way of transition, the maintenance cycle has also been substantially extended, which requires the performance of the vehicle parts more durable than in the past. Brake cylinders, which are part of the vehicle brake system, are not replenished with oil for rationalization of service between plant repairs. However, the brake cylinder will not operate properly due to lack of oil. Especially in the winter season, due to the hardening of the grease and the cup, the brake cylinder will cause more severe leakage and malfunction. Therefore, in order to seek measures to prevent these failures, trial production of rubber cups with high abrasion resistance and high cold resistance and discussion on the adaptability of greases have been carried out since 1972