Process and related plant for manufacturing steel long...

B - Operations – Transporting – 21 – B

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B21B 1/46 (2006.01)

Patent

CA 2611396

A process for manufacturing steel long products provides for starting from a continuous casting step (1) with liquid core reduction, followed by induction heating (2) without interruption until the end of a rolling step (4) in a plurality of stands. The blooms or billets (10) subjected to such a process have initial thickness in the range between 120 and 400 mm and a high "mass flow" passing in the time unit at the outlet from the continuous casting, as well as an average temperature in the cross-section which is higher than the surface temperature, being in the core or inner middle region higher by 100~C than on the surface, that is of about 1200~C. A plant for carrying out such a process is also described.

La présente invention concerne un processus de fabrication de produits allongés en acier commençant par une étape de coulage continu (1) avec réduction du coeur liquide, suivie par un chauffage par induction (2) sans interruption jusqu'à la fin d'une étape de laminage (4) dans une pluralité de supports. Les blooms ou billettes (10) soumis à ce processus ont une épaisseur initiale de l'ordre de 120 à 400 mm et un débit massique élevé dans le temps à la sortie du coulage en continu, et également une température moyenne dans la section transversale qui est supérieure à la température de surface, dans le coeur ou dans la région médiane interne supérieure de 100 °C à celle de la surface, qui est d'environ 1200 °C. Une installation pour réaliser ce processus est également décrite.

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