Process and apparatus for casting rounds, slabs, and the like

Details Process and apparatus for casting rounds, slabs, and the like Process and apparatus for casting rounds, slabs, and the like

1984-08-15

1988-08-30

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164445, 164DIG6, B22D 3500

Patent

active

047669454

ABSTRACT:
A process and apparatus for casting semi-finished metal products in which a molten-metal-proof plunger is disposed at the top of a cavity in a permanent mold. A thin band of metal is attached to the plunger and extends above its top. Inside the metal band on top of the plunger is insulation and on top of that is a barrier to the molten metal. A reservoir of molten metal is created and maintained in a pouring cup over the plunger, and the plunger is caused to descend in the cavity at a controlled rate so that the molten metal enters and fills the cavity above the plunger. Promptly after the plunger reaches the bottom of its stroke, it is reversed to lift the casting and pouring cup at least slightly out of the mold. The shim band, barrier, and insulation are expendable, but the plunger is used again.

REFERENCES:
patent: 298662 (1884-05-01), Billings
patent: 3598175 (1971-08-01), Olsson
patent: 3653427 (1972-04-01), Evans

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