货车控制阀摩擦副磨损失效分析研究

打开文本图片集

中图分类号：U270.35 文献标志码：B doi：10.20213/j.cnki.tdcl.2025.01.028

Abstract：The wear failure of thefriction pair of control valves is one of the main factors that restricts the maintenance period of pneumatic control valves of railway freight cars in China.In2Ol7，after the local structural improvement of control valves，the leakage of control valves decreased significantly，but there are still corosive spots and pits on the working faceof the guiding valve，and scratcheson the working face of the closing valve，which risk the failure of the control valve. This paper analyzes the above wear problems， compares and tests the durability of control valves. The results demonstrate that the burr of guiding valves is easy to aggravate contact surface wear，and that the spot on the botom surface of guiding valves is mainly caused by silicon oil and gas erosion. Suggestions are put forward for improving the friction pair of control valves.

Key words：control valve；friction pair；freight car；wear;reliability

1背景

控制阀作用部是我国铁道车辆控制阀的核心组件，是控制阀运用安全及检修周期的重要影响因素之一。（剩余2813字）