Method for the continuous rolling of a metal bar,...

B - Operations – Transporting – 21 – B

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B21B 1/46 (2006.01) B22D 11/12 (2006.01) B21B 41/08 (2006.01)

Patent

CA 2474973

Disclosed are a method and a corresponding continuous casting machine (1) for continuously rolling a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab. Said metal bar is bent, dressed, and cut to length as required during cooling and is fed into a first roll stand for rolling once the temperature has been equalized. Optionally the metal bar can still be fed by modifying the casting machine by supporting (3) a vertically cast continuous slab (2) having a guide length that is adjusted to the casting rate. One or several segments of said continuous slab (2) is/are then dressed by bending and straightening, whereupon the continuous slab (2) is guided by a sling (11), which is supported from below, into a straightening driver (6) that is positioned at a distance approximately equivalent to the length of the sling before being cut to length (7).

La présente invention concerne un procédé et la machine de coulée continue (1) correspondante, permettant le laminage continu d'un boyau de métal, notamment d'un boyau d'acier, produit à une vitesse de coulée et dont la section est celle d'une fine brame, ledit boyau étant à l'état de refroidissement incurvé, dressé, au besoin découpé transversalement, et, après homogénéisation de la température, introduit dans une première cage de laminoir pour y être laminé. Le boyau peut éventuellement être introduit par modification de la machine de coulée, avec appui (3) d'un boyau continu (2) coulé verticalement ayant une longueur de guidage adaptée à la vitesse de coulée, le boyau continu (2) étant dressé par flexion sur un ou plusieurs segments et guidé dans une boucle (11) supportée par le dessous vers l'intérieur d'un entraînement redresseur (6) qui se trouve à une distance équivalente à la longueur de la boucle, avant découpage transversal (7).

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