Method of making metal strip and plant for carrying out the...

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 1/26 (2006.01) B21B 1/46 (2006.01) C21D 8/02 (2006.01)

Patent

CA 2745044

The invention relates to a method of and a plant for making hot-rolled strips of cast metal, wherein the cast strip is subjected as a rough strip to at least a first step for momogenizing the grain structure in a protective gas and the cast strip is then subjected to at least a further heat-treatment step before it is rolled to reduce its thickness. After the thickness reduction the cast strip is subjected to a second step of homogenization or recrystallization of its grain structure before finally the strip is passed to a cutter and a finished rolled hot piece is severed from the following strip.

L'invention concerne un procédé et une installation de production pour la fabrication de bandes métalliques laminées à chaud. Selon ce procédé, la bande coulée tenant lieu de bande préliminaire est d'abord soumise à une première opération d'homogénéisation structurelle sous gaz de protection, puis la bande préliminaire est soumise au moins à un traitement thermique ultérieur, avant l'opération suivante qui consiste en un laminage visant à réduire l'épaisseur du produit. Après cette réduction d'épaisseur, la bande préliminaire est soumise à une seconde opération d'homogénéisation ou de recristallisation de la constitution de sa structure, avant de passer finalement par une installation séparatrice et d'être séparée de la bande préliminaire suivante sous la forme d'une bande laminée à chaud finie.

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