Method and device for uphill casting, comprising a chill or...

Details Method and device for uphill casting, comprising a chill or... Method and device for uphill casting, comprising a chill or...

B - Operations, Transporting

22

D

B22D 18/04 (2006.01)

Patent

CA 2412935

The invention relates to a method for uphill casting/low-pressure casting especially light metal alloys involving a casting plate comprising a through hole; a casting furnace lying beneath the casting plate and comprising an ascending pipe which forms an upwards-opening orifice; and a casting mould comprising a base plate which has a downwards-opening pouring gate. Said orifice is joined from below to the through hole in a sealing manner; the pouring gate pertaining to the casting mould is aligned over the through hole; molten metal is transported via the ascending pipe from the casting furnace to the casting mould, filling said casting mould; and the casting mould is displaced horizontally on the casting plate when the connection between the casting furnace and the casting mould is open and filled with molten metal, until the pouring gate is closed below by the casting plate, and the through hole is closed above by the base plate. The molten metal is then left to fall back into the ascending pipe to a point below the orifice.

Procédé de coulée/coulée à basse pression ascendante, en particulier d'alliages de métaux légers, qui repose sur l'utilisation d'un dispositif comportant un plateau de coulée doté d'un orifice traversant, un four de coulée situé sous le plateau de coulée et doté d'un tuyau ascendant qui forme une bouche ouverte vers le haut, et un moule doté d'une plaque de base qui possède un orifice de coulée ouvert vers le bas. Selon ledit procédé, la bouche est placée depuis le bas de manière étanche sur l'orifice traversant, le moule est déplacé de manière que son orifice de coulée se trouve au-dessus de l'orifice traversant, du métal en fusion est envoyé via le tuyau ascendant du four de coulée dans le moule jusqu'au remplissage de ce dernier, le moule est déplacé horizontalement sur le plateau de coulée, la liaison entre le four de coulée et le moule étant ouverte et remplie de métal fondu, jusqu'à ce que l'orifice de coulée soit fermé en bas par le plateau de coulée et que l'orifice traversant soit fermé en haut par la plaque de base, puis le métal fondu est amené à retomber dans le tuyau ascendant jusqu'à un niveau inférieur à la bouche.

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