Method and device for descaling a metal strip

Details Method and device for descaling a metal strip Method and device for descaling a metal strip

B - Operations, Transporting

21

B

B21B 45/06 (2006.01) B08B 7/00 (2006.01) C23C 2/02 (2006.01)

Patent

CA 2589605

The invention relates to a method and a device for descaling a metal strip (1), especially a hot-rolled strip consisting of normal steel or a cold-rolled or hot-rolled strip consisting of austenitic or ferritic stainless steel. According to said method, the metal strip (1) is guided in a transport direction (R) through at least one plasma descaling device (2, 3) in which it is subjected to a plasma descaling process. The aim of the invention is to improve the production of one such metal strip. To this end, the metal strip (1) is subjected to a regulated cooling process in a cooling device (4, 5) following the plasma descaling process in the at least one plasma descaling device (2, 3), in such a way that it has a defined temperature downstream of the cooling device (4, 5). The invention also relates to a method, according to which the strip is provided with a coating consisting of a coating metal, using the heat produced by the plasma descaling process, following the same.

L'invention concerne un procédé et un dispositif de décalaminage d'une bande métallique (1), notamment d'une bande en acier normal, laminée à chaud, ou d'une bande en acier inoxydable austénitique ou ferritique, laminée à chaud ou à froid, selon lequel la bande métallique (1) est guidée dans une direction de transport (R) au travers d'au moins un dispositif de décalaminage au plasma (2, 3). Pour améliorer la fabrication d'une telle bande métallique, la bande métallique (1) est soumise à un refroidissement régulé dans un dispositif de refroidissement (4, 5), après décalaminage au plasma dans le dispositif de décalaminage au plasma (2, 3), de telle manière qu'elle présente une température définie en aval du dispositif de refroidissement (4, 5). L'invention concerne également un procédé selon lequel la bande est pourvue d'un revêtement de métal de couverture à l'aide du réchauffement produit par le décalaminage au plasma.

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