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对于金属挤压机所使用的大马力泵有一要求,即保证挤压速度不变。本文中介绍了采用能在175公斤/厘米~2的压力下连续运转的径向杜塞泵和通过电-液伺服系统来消除其速度变化的实例。由于金属挤压机需要挤压力大,挤压速度高和行程长,因此油压动力源必然要求使用大马力泵。挤压机的大型化,进一步增强了使用大马力泵的趋势。本文介绍的150马力泵,适用于此方面的用途,广泛使用于很多金属挤压机上,在这里介绍该泵的结构、特征等,并叙述该泵在挤压机中的应用,以及有关设计和维修上应注意的事项。
There is a demand for high-powered pumps used in metal extrusion presses, which means that the extrusion speed is kept constant. This article describes an example of a radial Düsseldorf pump that operates continuously at a pressure of 175 kg / cm 2 and eliminates its speed change by an electro-hydraulic servo system. As the metal extrusion press needs a large squeeze, high extrusion speed and long stroke, so the hydraulic power source will inevitably require the use of high-power pump. The large size of the extruder further enhances the trend of using high-powered pumps. This article describes the 150 horsepower pump, suitable for this purpose, is widely used in many metal extrusion machines, where the pump structure, characteristics, etc., and describes the pump in the extruder and the application of design and Maintenance should pay attention to the matter.