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1943年—1944年以前,在水压机上挤压铝合金制品,是用润滑挤压筒轴套内表面方法进行生产的。采用润滑挤压筒方法能绚以较小的单位压力和较高的金属流动速度进行挤压,从而大大地提高了挤压生产能力。例如,在600吨立式水压机上,用85毫米直径的挤压筒挤压1合金管材时,在润滑挤压筒的情况下金属流动速度为16—18米/分,而不润滑挤压筒时,则金属流动速度大约为4米/分。在卧式水压机上进行挤压时,金属流动速度也大致相同。但是,在润滑挤压筒的情况
1943 - Before 1944 extrusion of aluminum alloy products on hydraulic presses was done by the method of lubricating the inner surface of the sleeve of the sleeve. The use of lubrication extrusion tube method can be used Xuan with a smaller unit pressure and higher metal flow rate of extrusion, which greatly enhanced the extrusion capacity. For example, in a 600-ton vertical hydraulic press, the metal flow rate is 16-18 m / min in the case of a squeeze tube without using a 85 mm diameter squeeze tube, without lubricating the squeeze tube , Then the metal flow rate of about 4 m / min. When squeezing on a horizontal press, the metal flows at about the same speed. However, in the case of lubrication of the extruder barrel