C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 2/00 (2006.01)
Patent
CA 2428488
The invention concerns a method for continuous dip coating of a metal strip (1) in a tank (11) containing a liquid metal bath (12), method which consists in: continuously unwinding the metal strip (1) in a sheath (13) whereof the lower part (13a) is immersed in the liquid metal bath (12) to constitute with the surface of said liquid metal a liquid pressure seal (14); producing a natural flow of the liquid metal from the surface of the liquid pressure seal (14) into two overflow compartments (25, 29) arranged in said sheath (13) and comprising each an inner wall extending the sheath (13) at its lower part and maintaining the level of the metal liquid in said compartments at a level below the surface of the liquid seal (14). The invention also concerns an installation for implementing the method.
L'invention a pour objet un procédé de revêtement au trempé en continu d'une bande métallique (1) dans une cuve (11) contenant un bain de métal (12) liquide, procédé dans lequel on fait défiler en continu la bande métallique (1) dans une gaine (13) dont la partie inférieure (13a) est immergée dans le bain de métal (12) liquide pour déterminer avec la surface dudit bain un joint d'étanchéité (14) liquide. On réalise un écoulement naturel du métal liquide de la surface du joint liquide (14) dans deux compartiments de déversement (25, 29) ménagés dans ladite gaine (13) et comportant chacun une paroi interne prolongeant la gaine (13) à sa partie inférieure et on maintient le niveau de métal liquide dans lesdits compartiments à un niveau au-dessous de la surface du joint liquide (14). L'invention a également pour objet une installation pour la mise en oeuvre du procédé.
Baudin Hugues
Dauchelle Didier
Gacher Laurent
Lucas Patrice
Prigent Yves
Arcelormittal France
Robic
Sollac
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