Electromagnetic braking device for a smelting metal in a...

B - Operations – Transporting – 22 – D

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B22D 11/10 (2006.01) B22D 11/115 (2006.01)

Patent

CA 2312876

The invention concerns an electromagnetic braking device consisting of an electric power supply and an electromagnetic inductor with multiple windings (1) such as a "polyphase stator of a linear motor with sliding magnetic field" designed to be mounted opposite one surface of a cast product, in particular at the large wall (14) of an ingot mould casting steel slabs (12), and comprising windings (A, B) connected with the electric power supply. The latter consists of a plurality of elementary powering units (8, 9) supplying direct current each provided with its own particular means (10, 11) for regulating the current intensity delivered, each of said windings (A, B) of the inductor capable of being connected to one of said elementary powering units (8, 9) on its own. The equipment enables to localise the braking action in the ingot mould at any one moment, even during casting, without having to modify the position of the inductor.

Cet équipement de freinage électromagnétique est constitué par une alimemtation électrique et par un inducteur électromagnétique pluri-enroulements (1) du type "stator polyphasé de moteur linéaire à champ glissant" destiné à être monté en regard d'une face du produit coulé, notamment au niveau d'une grande paroi (14) de la lingotière de coulée de brames d'acier (12), et comprenant des enroulements (A, B) connectés à l'alimentation électrique. Cette dernière est constituée par une pluralité d'alimentations élémentaires (8, 9) à courant continu pourvues chacune de moyens de réglage propres (10, 11) de l'intensité de courant qu'elles délivrent, chacun des enroulements (A, B) de l'inducteur étant connectable à l'une de ces alimentations élémentaires (8, 9) et à elle seule. L'équipement permet de régler la localisation de l'action de freinage en lingotière à tout moment, même en cours de coulée, sans nécessiter de modifier la position de l'inducteur.

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