Casting of metallic materials

Details Casting of metallic materials Casting of metallic materials

1984-02-22

1986-11-11

Husar, Francis S.

Metal founding

Process

Shaping liquid metal against a forming surface

164122, 164490, B22D 11124, B22D 1110

Patent

active

046216766

ABSTRACT:
A process for casting molten metallic material having a solidification ra of temperatures, especially alloys containing more than 80% aluminium, involves simultaneously stirring and cooling the molten material to a temperature between 0.degree. C. and 75.degree. C. above the liquidus temperature of the metallic material using hollow heat transfer rods (9) extending across a duct (4), down which the material is caused to flow. The material is then caused to solidify with a substantially non-dendritic microstructure by rapidly cooling it in a continuous casting machine. The solidified bar so produced may then be reheated at a steady rate to a point between its liquidus and solidus temperature until it contains between 30% and 70% by volume solids content but can still be maneuvered without losing its shape. It may then, with a minimum of delay, be rapidly formed into a solid article of any desired shape by, for example, casting in a pressure casting machine.

REFERENCES:
patent: 3902544 (1975-09-01), Flemings et al.
patent: 4263959 (1981-04-01), Flemings et al.
patent: 4315538 (1982-02-01), Nielsen
patent: 4434839 (1984-03-01), Vogel

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