Chilled continuous casting mould for casting metal

B - Operations – Transporting – 22 – D

Patent

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Details

B22D 11/055 (2006.01) B22D 11/059 (2006.01)

Patent

CA 2420232

The invention relates to a chilled continuous casting mould (1) for casting metal, in particular steel in slab format, said slabs having a thickness of between 40 and 400 mm and a width of between 200 and 3.500 mm. The mould has walls configured from plates (7, 7.1), into which coolant channels for chilling are incorporated. The aim of the invention is to improve a mould of this type to such an extent that the thermal stress over the entire mould, i.e. the thermal profile over the entire mould is evened out, thus allowing the surface temperature of the mould at the meniscus to be lowered. To achieve this, the width (26.1) of the coolant channels (29) is reduced in the direction of casting, in accordance with the heat current profile (2.1), over the entire mould (13), from the mould inlet (1.1) to the mould outlet (13.2).

La présente invention concerne une coquille refroidie pour coulée continue (1) permettant la coulée de métal, notamment d'acier, se présentant sous un format de brames, ayant dans ce cas notamment une épaisseur comprise entre 40 et 400 mm et une largeur comprise entre 200 et 3500 mm, comprenant des parois de coquille constituées de plaques (7, 7.1) dans lesquelles sont formés des canaux à liquide de refroidissement. L'invention a pour objet d'améliorer ladite coquille de sorte que la contrainte thermique peut être homogénéisée sur la hauteur de la coquille c'est-à-dire que le profil thermique peut être homogénéisé sur la hauteur de la coquille, la température superficielle de la coquille au niveau de coulée pouvant ainsi être réduite. A cet effet, la largeur (26.1) des canaux à liquide de refroidissement (29) diminue, en fonction du profil de flux thermique (2.1), dans la direction de coulée, sur la hauteur de coquille (13), de l'entrée de coquille (1.1) à la sortie de coquille (13.2).

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