1971 年 20 巻 215 号 p. 918-923
Hereunder is presented a report of construction of a 500ton hydrostatic extrusion press planned for industrial expediency. The press has maximum working pressure 15000kg/cm2, and being composed of two container systems, billet container and pressure container, is especially fit to extrude very long billets. The press was used in an experiment, of which the results are as follows.
At high extrusion speed continuous hydrodynamic lubrication is maintained, which lowers extrusion pressure. At large extrusion ratio, the high extrusion speed softens the products by reason of high temperature generated during the extrusion.