Method and device for the production of a metal strip by...

B - Operations – Transporting – 22 – D

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B22D 11/12 (2006.01)

Patent

CA 2693205

The invention pertains to a method for manufacturing a metal strip (1) by means of continuous casting and rolling, wherein a thin slab (3) is initially cast in a casting machine (2) and this thin slab is subsequently rolled in at least one rolling train (4, 5) by utilizing the primary heat of the casting process, wherein a continuous manufacture of the metal strip (1) (continuous rolling) can be realized in a first operating mode by directly coupling the casting machine (2) to the at least one rolling train (4, 5), and wherein a discontinuous manufacture of the metal strip (1) (batch rolling) can be realized in a second operating mode by decoupling the casting machine (2) from the at least one rolling train (4, 5). In order to increase the flexibility of the system, the invention proposes that cast slabs (3) or preliminary strips (3') are removed from the main transport line (6) downstream of the casting machine (2) referred to the strip transport direction (F) in the discontinuous manufacture of the metal strip (1), stored and subsequently transported back into the main transport line (6), wherein the removed slabs (3) or preliminary strips (3') are heated to a desired temperature or maintained at a desired temperature prior to the transport back into the main transport line (6). The invention furthermore pertains to a device for manufacturing a metal strip (1) by means of continuous casting and rolling.

L'invention concerne un procédé de fabrication d'une bande métallique (1) par coulée et laminage en continu, lequel procédé consiste d'abord à couler une brame mince (3) dans une machine de coulée (2), puis à laminer ladite brame dans au moins un train de laminage (4, 5) en utilisant la chaleur primaire du processus de coulée, une fabrication en continu (laminage en continu) de la bande métallique (1) étant permise dans un premier mode de fonctionnement par accouplement direct de la machine de coulée (2) audit au moins un train de laminage (4, 5) et une fabrication en discontinu (par lots) de la bande métallique (1) étant permise dans un second mode de fonctionnement par séparation de la machine de coulée (2) et dudit au moins un train de laminage (4, 5). L'objectif de l'invention est d'augmenter la flexibilité de l'installation. A cet effet, lors de la fabrication en discontinu de la bande métallique (1), des brames (3) ou des ébauches (3') coulées sont retirées de la ligne de transport principale (6) en aval de la machine de coulée (2) dans le sens de transport (F) de la bande, puis stockées et ramenées ultérieurement vers la ligne de transport principale (6), les brames (3) ou les ébauches (3') retirées étant amenées et maintenues à une température souhaitée avant d'être ramenées vers la ligne de transport principale (6). L'invention concerne également un dispositif permettant la fabrication d'une bande métallique (1) par coulée et laminage en continu.

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