Method and apparatus for semi-continuous casting of hollow...

B - Operations – Transporting – 22 – D

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B22D 11/00 (2006.01)

Patent

CA 2756344

Methods and associated apparatus for semi-continuous casting of hollow ingots are described. In one embodiment a method for the semi-continuous casting of a metallic hollow ingot is provided. The method includes providing a mold comprising a mold center having an inner pipe and an outer pipe arranged to form an annular space for a cooling media and an outer mold, circulating a cooling media in the annular space, feeding a source material to the mold, heating the source material to produce a molten material, moving the mold center progressively downward relative to the outer mold, and solidifying the molten material to form a hollow ingot. Embodiments relating to an apparatus for semi-continuous casting of hollow ingots, and products resulting from the semi-continuous casting of hollow ingots are also described.

La présente invention concerne des procédés et appareils associés de coulée semi-continue de lingots creux. Dans un mode de réalisation, est décrit un procédé de coulée semi-continue d'un lingot creux métallique. Le procédé comprend : la fourniture d'un moule comprenant une cavité centrale de moule comportant un conduit interne et un conduit externe agencés pour former un espace annulaire pour un agent de refroidissement, et un moule externe ; la circulation d'un agent de refroidissement dans l'espace annulaire ; l'alimentation d'un matériau source vers le moule ; la chauffe du matériau source pour produire un matériau fondu ; le déplacement progressif de la cavité centrale de moule vers le bas par rapport au moule externe ; et la solidification du matériau fondu pour former un lingot creux. Des modes de réalisation concernant un appareil de coulée semi-continue de lingots creux, et concernant des produits résultant de la coulée semi-continue de lingots creux, sont également décrits.

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