Double acting cylinder for filling dies with molten metal

Details Double acting cylinder for filling dies with molten metal Double acting cylinder for filling dies with molten metal

1991-09-25

1993-01-26

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164133, 164337, 164312, B22D 1704, B22D 3700

Patent

active

051815516

ABSTRACT:
A melting casting process produces meltable metal cores for subsequent molding of components made of plastic material and encapsulated components such as turbine blades so they may be held for machining. The process utilizes a double acting piston in a cylinder to permit unlimited dispensing capacity without having to pause between piston strokes. The apparatus comprises a tank for containing molten metal, a double acting cylinder having both ends closed and an injection piston therein and an operating mechanism for reciprocating the piston in the cylinder. Valve mechanisms are provided so that when the piston is moved in either direction in the cylinder, a flow of molten metal passes through an injection passageway into a die, and molten metal from the tank fills the space behind the moving piston thus the cylinder always remains full of molten metal.

REFERENCES:
patent: 1176862 (1916-03-01), Sims
patent: 1203422 (1916-10-01), Simonson
patent: 4676296 (1987-06-01), Pascoe et al.
patent: 4958675 (1990-09-01), Kidd
patent: 4991641 (1991-02-01), Kidd et al.

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