锻压技术

HPP4000压力机液压泵气蚀故障分析及处理

英文标题：Analyzing and handling of cavitation erosion of hydraulic pumps for HPP4000 hydraulic press

作者：王建升

单位：中信戴卡股份有限公司

关键词：气蚀故障液压泵配流盘柱塞缸筒

分类号：TG315

出版年,卷(期):页码：2014,39(3):82-86

摘要：

气蚀故障是液压系统中最常见和危害极为严重的一种故障现象。针对现有HPP4000压力机液压泵产生气蚀故障进行分析讨论，分析了该设备由于产生气蚀现象导致液压泵配流盘出现片状麻点小坑以及柱塞缸筒出现的材料严重剥落现象；指出造成气蚀的主要原因是由于油箱设计缺陷所致；通过分析气蚀产生时伴随的吸空现象以及该压力机设备的动作顺序和液压系统油箱结构设计特点，提出了对油箱的结构改进设计以及调整主泵泄油口管路的改造方法等。实践证明，这些改造方法对于改进液压系统气蚀现象能够起到一定作用。

Cavitation erosion is the most common fault phenomenon whose hazard is very serious for hydraulic system. Aiming at the cavitation erosion of HPP4000 hydraulic press, the flake pitting and small pit appearing in the port plate of hydraulic pump caused by cavitation erosion and the material peeling off phenomenon appearing in the plunger cylinder were analyzed. The reason of cavitation erosion was design defects of oil tank. By analyzing the inhaling empty problem, the movment sequence of this press and the design features of oil tank structure of hydraulic system, the methods of structure improvement of oil tank and drainage pipe adjustment of main pump were put forward. The practice proves that the method can play a definite role in hydraulic system design.

基金项目：

参考文献：

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