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1. WO2010089666 - METHOD FOR METAL COATING A CONTINUOUS METAL PRODUCT AND APPARATUS THEREFOR

Publication Number WO/2010/089666
Publication Date 12.08.2010
International Application No. PCT/IB2010/000244
International Filing Date 09.02.2010
IPC
C23C 2/00 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
C23C 2/40 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
34characterised by the shape of the material to be treated
36Elongated material
40Plates; Strips
CPC
C23C 2/003
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
003Apparatus, e.g. crucibles, heating devices
C23C 2/40
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
34characterised by the shape of the material to be treated
36Elongated material
40Plates; Strips
Applicants
  • SIDERPROGETTI SA LLC [IT]/[IT] (AllExceptUS)
  • GUADAGNINI, Andrea [IT]/[IT] (UsOnly)
  • GUADAGNINI, Edoardo [IT]/[IT] (UsOnly)
Inventors
  • GUADAGNINI, Andrea
  • GUADAGNINI, Edoardo
Agents
  • CELESTINO, Marco
Priority Data
PI2009A00001109.02.2009IT
Publication Language English (EN)
Filing Language Italian (IT)
Designated States
Title
(EN) METHOD FOR METAL COATING A CONTINUOUS METAL PRODUCT AND APPARATUS THEREFOR
(FR) PROCÉDÉ DE POSE DE REVÊTEMENT MÉTALLIQUE SUR UN PRODUIT MÉTALLIQUE CONTINU ET APPAREIL ASSOCIÉ
Abstract
(EN)
An apparatus for metal coating a continuous metal product, in particular a metal strip (15) comprises a galvanizing tank (10) containing a molten metal bath (11), suitable to coat the metal product (15) with a metal layer; the molten metal is associated to a dross (12) that floats on the molten bath (11). In particular the molten metal bath (11) reaches in the tank (10) a determined fill level (17) given by the combination between the molten metal and the floating dross layer (12). The structure comprises furthermore, a mechanism (25) that moves the product between an inlet zone (26) where the metal product enters in the molten bath (11), a passage (27) where the product crosses the galvanizing tank (10), dipping in the molten bath (11), and an outlet zone (28) where the metal product (15) exits through the molten metal bath coated by the metal layer. An exit channel (16) is provided associated with the galvanizing tank (10) with a closed bottom (37) and an upper edge (38), the closed bottom (37) arranged below the fill level (17) of the tank (10) whereas the upper edge (38) is substantially at the level of the fill level (17), such that the floating dross (12) flows down exit channel (16) and is easily collected. A collection basin is provided (40) associated with the exit channel (16) in which the floating dross (12) and part of the molten metal that has flown down into the channel (16) are collected; a device is provided for removing the floating dross (30) from the collection basin.
(FR)
L'invention concerne un appareil servant au revêtement métallique d'un produit métallique continu, notamment d'une bande métallique (15), lequel dispositif comprend une cuve de galvanisation (10) contenant un bain de métal fondu (11) approprié pour le revêtement du produit métallique (15) avec une couche métallique; le métal fondu est associé à de l'écume (12) flottant sur le bain de métal fondu (11). Plus précisément, le bain de métal fondu (11) atteint dans la cuve (10) un niveau de remplissage déterminé (17) résultant de la combinaison entre le métal fondu et la couche d'écume flottante (12). La structure comprend en outre un mécanisme (25) qui déplace le produit entre une zone d'entrée (26) dans laquelle le produit métallique entre dans le bain de métal fondu (11), un passage (27) dans lequel le produit traverse la cuve de galvanisation (10), plongeant dans le bain de métal fondu (11), et une zone de sortie (28) dans laquelle le produit métallique (15) revêtu de la couche métallique sort du bain de métal fondu. Un canal de sortie (16) associé à la cuve de galvanisation (10) présente un fond fermé (37) et un bord supérieur (38), le fond fermé (37) se trouvant au-dessous du niveau de remplissage (17) de la cuve de galvanisation (10) tandis que le bord supérieur (38) est sensiblement au niveau de remplissage (17), de sorte que l'écume flottante (12) s'écoule vers le bas dans le canal de sortie (16) et est facilement collectée. Au canal de sortie (16) est associé un bassin collecteur (40) dans lequel l'écume flottante (12) et la partie de métal fondu qui s'est écoulée dans le canal (16) sont collectées; un dispositif (30) permet de retirer l'écume flottante du bassin collecteur
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