Co-casting of metals by direct-chill casting

Details Co-casting of metals by direct-chill casting Co-casting of metals by direct-chill casting

B - Operations, Transporting

22

D

B22D 7/02 (2006.01) B22D 7/08 (2006.01) B22D 7/12 (2006.01) B22D 9/00 (2006.01) B22D 15/04 (2006.01) B22D 21/04 (2006.01)

Patent

CA 2678009

Apparatus and method of co-casting metal ingots in direct-chill casting apparatus. The apparatus and method employs at least one divider (divider member or divider wall) that separates a casting mold into two or more chambers for receiving molten metal that is combined into a single ingot. The divider may be moved, angled and/or flexed during casting to produce ingots that are designed primarily for rolling into thin plate or sheet. The ingot has at least one outer layer that is thicker adjacent to the side (width) edges than in the center, and/or thicker adjacent to the butt or head regions. This compensates for wiping of the outer layer from the ingot core during rolling. Also, the divider may be outwardly bowed outwardly towards one of the mold walls during the casting run.

La présente invention concerne un appareil et un procédé de coulée concomitante de lingots métalliques dans un appareil de coulée semi-continue en lingotière tubulaire courte. L'appareil et le procédé emploient au moins un diviseur (élément diviseur ou cloison) qui sépare un moule de coulée en deux chambres ou plus destinées à recevoir le métal fondu qui est combiné pour former un seul lingot. Le diviseur peut être déplacé, incliné et/ou fléchi pendant la coulée pour produire des lingots qui sont conçus principalement pour former une plaque ou feuille mince par laminage. Le lingot présente au moins une couche externe plus épaisse au niveau des bords latéraux (sens de la largeur) qu'au centre, et/ou plus épaisse au niveau du culot ou des zones de tête. Ceci permet de se dispenser de l'essuyage de la couche externe depuis le noyau du lingot pendant le laminage. De même, le diviseur peut être courbé vers l'extérieur en direction d'une des parois du moule pendant le déroulement de la coulée.

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