Low pressure die-casting machine and low pressure die-casting me

Details Low pressure die-casting machine and low pressure die-casting me Low pressure die-casting machine and low pressure die-casting me

1993-06-15

1995-02-21

Bradley, P. Austin

Metal founding

Including means to directly apply magnetic force to work or...

By electromagnetic means

164335, 164337, 164500, 222594, B22D 3900, B22D 3902

Patent

active

053907248

ABSTRACT:
A low pressure die-casting machine has a ladle unit, a molten metal pressurizing unit, a switching unit, and a controller. The ladle unit has an intake/discharge port with a cross-sectional area in a range of from 20 to 80 mm.sup.2 so as to be capable of successively supplying the molten metal to a desired location. The molten metal pressurizing unit is switchable between two positions. One position is for selectively supplying compressed air to the ladle to positively discharge the molten metal from the ladle through the intake/discharge port. The other position is for selectively isolating the ladle in order to retain the molten metal therein. The switching unit is connected between the molten metal pressurizing unit and the ladle. It is switchable between first and second change-over positions. The first change-over position is for providing fluid communication between the ladle and the molten metal pressurizing unit. The second change-over position is for providing fluid communication between the ladle and the atmosphere. The controller is connected to the molten metal pressurizing unit for selectively driving the molten metal pressurizing unit. The controller is also connected to the switching unit for driving the switching unit.

REFERENCES:
patent: 1843491 (1932-02-01), Tornberg
patent: 1983579 (1934-12-01), Ennor
patent: 3157923 (1964-11-01), Hodler
patent: 4073414 (1978-02-01), Garab

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