Dual-purpose installation for continuous annealing and hot...

C - Chemistry – Metallurgy – 21 – D

Patent

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Details

C21D 9/56 (2006.01) C23C 2/00 (2006.01) C23C 2/02 (2006.01) C23C 2/40 (2006.01) C21D 9/573 (2006.01)

Patent

CA 2421925

The present invention provides a dual-purpose installation for continuous annealing and hot dip plating to produce a continuously annealed steel sheet and a hot dip plated steel sheet by switching process routes in the single installation, and according to the present invention, by installing a bypass facility which leads a steel sheet from a continuous annealing furnace to a water quenching facility without it traveling through a plating pot and a plating facility in the a dual-purpose installation for continuous annealing and hot dip plating, it becomes possible to prevent the steel sheet coming out from the annealing furnace from being exposed to the outside atmosphere and being oxidized during the production of a continuously annealed product and to realize a less expensive dual-purpose installation for continuous annealing and hot dip plating.

La présente invention concerne une installation pour le recuit continu et la galvanisation à chaud en vue de produire une feuille d'acier recuite en continu et une feuille d'acier galvanisée à chaud par l'aiguillage de routage de processus dans une installation unique, et selon la présente invention, par l'installation d'une unité de dérivation qui conduit une feuille d'acier d'un four de recuit continu vers une unité de trempe sans qu'elle ne passe par une chambre de galvanisation et une unité de galvanisation dans l'installation à double usage pour le recuit continu et une galvanisation à chaud, il est possible d'empêcher la feuille d'acier provenant du four de recuit d'être exposée à l'air ambiant et d'être oxydée durant la fabrication d'un produit recuit et de réaliser une installation à double usage moins coûteux pour le recuit continu et la galvanisation à chaud.

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