B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/20 (2006.01)
Patent
CA 2296743
The invention concerns a method characterised in that, before starting the casting operation, it consists in determining an initialising position (31) for the actuator controlling the ladle stopper when the latter is resting on its base by its sole weight, and after filling the distributor equipped with this ladle stopper, in activating the actuator to bring it in a controlled over-closure position (33), and, to start the casting, in controlling the actuator according to a predetermined time- based displacement law (34), the casting operation starting time (t1) being determined on the basis of this law, and in continuing to activate the control actuator in the opening direction, to allow the metal to flow into the ingot mould. The invention is applicable to metal casting, in particular, steel.
The invention concerns a method characterised in that, before starting the casting operation, it consists in determining an initialising position (31) for the actuator controlling the ladle stopper when the latter is resting on its base by its sole weight, and after filling the distributor equipped with this ladle stopper, in activating the actuator to bring it in a controlled over-closure position (33), and, to start the casting, in controlling the actuator according to a predetermined time- based displacement law (34), the casting operation starting time (t1) being determined on the basis of this law, and in continuing to activate the control actuator in the opening direction, to allow the metal to flow into the ingot mould. The invention is applicable to metal casting, in particular, steel. Le procédé selon l'invention est caractérisé en ce que, avant le démarrage de la coulée, on détermine une position d'initialisation (31) du vérin de commande de la quenouille alors que celle-ci repose sur son siège sous son seul poids, et après avoir rempli le répartiteur équipé de cette quenouille, on actionne le vérin pour l'amener dans une position (33) de surfermeture contrôlée, et, pour démarrer la coulée, on commande le vérin selon une loi imposée (34) de déplacement en fonction du temps, l'instant (t1) de début de coulée étant déterminé à partir de cette loi, et on continue à actionner le vérin de commande dans le sens de l'ouverture, pour laisser le métal s'écouler dans la lingotière. Application à la coulée continue des métaux, notamment de l'acier.
Abi Karam Michel
Breviere Yann
Fellus Gilles
Leclercq Yves Rene
Mercier Georges
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Thyssen Stahl Aktiengesellschaft
Usinor
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