Method and device for terminating the casting process after non-

Details Method and device for terminating the casting process after non- Method and device for terminating the casting process after non-

1995-06-28

1997-06-10

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164119, 164136, 164306, B22D 3700

Patent

active

056366809

ABSTRACT:
After casting a mould (1) through a bottom inlet (2) with liquid metal (4) under pressure through a mouthpiece (5) of a casting device, the inlet (2) is closed by a closing element (8) being pressed by the mouthpiece (5) into sealing abutment against a seat in the mould (1). Subsequently, an inert gas is introduced into a passage (6) in the casting mouthpiece from a source (9) through a pressure reducing valve (11), a shut-off valve (12) which is capable of being selectively opened, a gas chamber (13) and a bore (14) in the mouthpiece (5). The inert gas is introduced such that the casting device can suck the liquid metal (4) from the closing element (8) a distance backwards in the mouthpiece (5). The effect of this is that oxidation of the liquid metal in the mouthpiece (5) or in the nozzle (7) is avoided, and a faster suction of the metal back from the closing element (8) and the nozzle (7) into the passage (6) of the mouthpiece (5), is achieved.

REFERENCES:
patent: 2408467 (1946-10-01), Lyons
patent: 3032841 (1962-05-01), Sylvester
patent: 3114947 (1963-12-01), Sylvester
patent: 3823760 (1974-07-01), Bloomfield et al.
patent: 3880222 (1975-04-01), Chatourel et al.
patent: 4153100 (1979-05-01), Balevski et al.
patent: 5309975 (1994-05-01), Ohnishi et al.

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