PRESSURIZATION DEVICE FOR SQUEEZE CASTING

摘要

PURPOSE:To efficiently obtain a fiber-reinforced metal which has a large density of reinforcing fibers and a large size by installing a device for pressurizing a container and providing cooling parts to both ends of the container. CONSTITUTION:The container 1 is heated from the circumference by a heater 2 and water cooling jackets 3 made of copper are installed on the top and bottom of the container in tight contact with the container 1. A lower punch 5 is fitted to the bottom end of the container 1. After a preform 9 is installed in the container 1, the container is heated by the heater 2 in such a manner that the central part of the container 1 attains a prescribed temp. An upper punch 4 is raised in this state and heated molten Al is poured from a trough 6 for the pouring molten metal and the pressurization is immediately started by lowering the upper punch 4. The molten Al which is gradually pressurized is cooled and solidified in spacings 11 and 12 between the jacket 3 and the upper punch 4 and the lower punch 5. The molten metal is held for the prescribed time in this state. The pressurization stopped at the point of the time when the displacement of the upper punch 4 decreases to zero. The fiber reinforced metal is thus obtd.