Georg Fischer Disa A/s

Dansk Industri Syndikat A/s

Steen Pedersen

Vagn Mogensen

Emil Jespersen

Preben Nordgaard Hansen

Niels W Rasmussen

String mould plant including arrangement for preventing shrinkage voids

Casting device for non-gravity casting of a mould with a light-metal

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.

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

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Ballerup, Denmark

Steen Pedersen