Process and device for cooling molten steel

Details Process and device for cooling molten steel Process and device for cooling molten steel

B - Operations, Transporting

22

D

B22D 11/124 (2006.01) B22D 11/06 (2006.01)

Patent

CA 2184719

A process is disclosed for cooling molten steel, in particular by continuous casting of hoop-steel. At least part of the molten mass that leaves a metallurgical vessel through a metal nozzle solidifies when contacting a cooling surface. According to the invention. a gaseous stream that forms a reducing atmosphere is directed onto the surface of the freely accessible liquid hoop-steel immediately after it leaves the metal nozzle and the surface of the hoop-steel is exposed to this gaseous atmosphere at least until it is completely solidified.

Selon un procédé de refroidissement d'acier en fusion, notamment par coulée en feuillards, au moins une partie de la masse fondue qui sort d'un récipient métallurgique par une buse se solidifie au contact d'une surface de refroidissement. Selon l'invention, un courant de gaz qui forme une atmosphère réductrice est dirigé sur la surface de la bande d'acier liquide librement accessible immédiatement après sa sortie par la buse et la surface de la bande d'acier est exposée à cette atmosphère gazeuse au moins jusqu'à se solidifier complètement.

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