Ingot mould with multiple angles for loaded continuous...

Details Ingot mould with multiple angles for loaded continuous... Ingot mould with multiple angles for loaded continuous...

B - Operations, Transporting

22

D

B22D 11/04 (2006.01)

Patent

CA 2320841

The invention concerns an ingot mould comprising in succession, in the direction for extracting the metallic product to be cast (7): a preheater (5) made of non-cooled refractory material acting as reservoir for the melting metal to be cast and a standard cooled tubular metal element (6) for solidifying the metal. A slot (18) for injecting the shearing gas (for example Ar) is arranged between the preheater (5) and the metal element (6) so as to emerge on the ingot mould internal periphery. The injection slot comprises means (17) for reducing the gas flow in each of the ingot mould angles, preferably formed by obstructing elements. The invention enables to reduce, even eliminate, defects encountered along the edges of the solidified cast products.

Cette lingotière comporte successivement, dans la direction d'extraction du produit métallurgique à couler (7), une rehausse (5) en matériau réfractaire non refroidi servant de réserve de métal en fusion à couler et un classique élément tubulaire métallque refroidi (6) pour la solidification du métal. Une fente (18) d'injection d'un gaz de cisaillage (Ar par ex.) est ménagée entre la rehausse (5) et l'élément métallique (6) de manière à déboucher sur la périphérie intérieure de la lingotière. La fente d'injection comporte des moyens (17) de réduction du débit de gaz dans chacun des angles de la lingotière, constitués de préférence par des éléments d'obstruction. L'invention permet de réduire, voire éliminer, les défauts rencontrés le long des arêtes des produits coulés solidifiés.

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