Method for making carbon steel bands, in particular...

Details Method for making carbon steel bands, in particular... Method for making carbon steel bands, in particular...

C - Chemistry, Metallurgy

21

D

C21D 8/04 (2006.01) C22C 38/00 (2006.01) C22C 38/04 (2006.01)

Patent

CA 2385685

The invention concerns a method for making carbon steel bands, in particular packaging steel bands, which consists in: casting in the form of a thin steel band between 0.7 and 10 mm thick, directly from molten metal, steel having a composition adapted for use as packaging steel; hot rolling in-line said band, ending in the austenitic domain of said steel; forced cooling of said band at a speed of 80 to 400 ·C/s ending in the ferritic domain of said steel; cold rolling said band at a reduction ratio of less than 85 % at least; and annealing said band. The invention also concerns a steel band, in particular for packaging, characterised in that it is obtainable by said above method.

L'invention a pour objet un procédé de fabrication de bandes d'acier au carbone, notamment d'acier pour emballages, selon lequel: on coule sous forme d'une bande mince de 0,7 à 10 mm d'épaisseur, directement à partir de métal liquide, un acier ayant une composition adaptée à une utilisation comme acier pour emballage; on effectue une opération de laminage à chaud en ligne de ladite bande, se terminant dans le domaine austénitique dudit acier; on effectue un refroidissement forcé de ladite bande à une vitesse de 80 à 400~C/s se terminant dans le domaine ferritique dudit acier; on effectue un laminage à froid de ladite bande à un taux de réduction de 85% au moins; et on effectue un recuit de la ladite bande. L'invention à également pour objet une bande d'acier, notamment d'acier pour emballages, caractérisée en ce qu'elle est susceptible d'être obtenue par le procédé précédent.

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