Research on key problems in seawater hydraulic piston pump and its experiment

In recent years water hydraulic systems have become of major interest because of the human friendly and environmental safety aspects. Piston pump is one of the most frequently used hydraulic units in recent engineering technique. In water hydraulic piston pump, poor lubrication is more likely to happen than in oil hydraulic one because of difference in properties between water and oil. So there are some key problems such as corrosive wear and erosion, which are investigated briefly in this paper. Much of this research has concentrated on new materials, structure and experiments.