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1. WO2001011102 - DEVICE AND METHOD FOR CONTROLLING CONTINUOUS COATING BY IMMERSION OF A METAL STRIP MOVING ALONG A VERTICAL RECTILINEAR PATH

Publication Number WO/2001/011102
Publication Date 15.02.2001
International Application No. PCT/FR2000/002067
International Filing Date 19.07.2000
IPC
C23C 2/14 2006.1
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
14Removing excess of molten coatings; Controlling or regulating the coating thickness
C23C 2/24 2006.1
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
14Removing excess of molten coatings; Controlling or regulating the coating thickness
24using magnetic or electric fields
CPC
C23C 2/14
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
14Removing excess of molten coatings; Controlling or regulating the coating thickness
C23C 2/24
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
14Removing excess of molten coatings; Controlling or regulating the coating thickness
24using magnetic or electric fields
Applicants
  • USINOR [FR]/[FR] (AllExceptUS)
  • GAUGE, Pierre, Marc [FR]/[FR] (UsOnly)
  • DE PALO, Luigi [IT]/[FR] (UsOnly)
  • JOLIVET, Jean-Marc [FR]/[FR] (UsOnly)
Inventors
  • GAUGE, Pierre, Marc
  • DE PALO, Luigi
  • JOLIVET, Jean-Marc
Agents
  • LECLAIRE, Jean-Louis
Priority Data
99/1029805.08.1999FR
Publication Language French (fr)
Filing Language French (FR)
Designated States
Title
(EN) DEVICE AND METHOD FOR CONTROLLING CONTINUOUS COATING BY IMMERSION OF A METAL STRIP MOVING ALONG A VERTICAL RECTILINEAR PATH
(FR) DISPOSITIF ET PROCEDE DE CONTROLE DU REVETEMENT EN CONTINU PAR IMMERSION D'UNE BANDE METALLIQUE EN DEFILEMENT RECTILIGNE VERTICAL
Abstract
(EN) The invention concerns a method for controlling a metal coating process on a moving strip (2) which consists in causing the strip (2) to pass vertically in a metal coating bath (1) contained in a container (10), causing it to pass through a slot (13) provided at the base of the container, said slot being extended downwards by a channel (14) for passing through the strip, and maintaining the coating metal in the channel with electromagnetic means (15); placing on one side of the channel a ionising source (20) and on the other detectors (31, 32, 33, 34); measuring the intensity of the radiation flux received by the detectors; and deducing therefrom a value representing the amount of coating metal between the source and the detection means on the path of the radiation (R), and an indication of the level of the bottom meniscus (3).
(FR) Pour réaliser le contrôle d'une opération de revêtement métallique sur une bande (2) en défilement, dans laquelle on fait passer la bande (2) verticalement dans un bain du métal de revêtement (1) contenu dans un récipient (10), en la faisant passer par une fente (13) ménagée dans le fond du récipient, ladite fente se prolongeant vers le bas par un chenal (14) de passage de la bande, et on contient le métal de revêtement dans le chenal par des moyens d'étanchéité électromagnétiques (15). On place d'un côte du chenal une source ionisante (20) et de l'autre côté des détecteurs (31, 32, 33, 34), on mesure l'intensité du flux de rayonnement reçu par les détecteurs, et on en déduit une valeur représentative de la quantité de métal de revêtement entre la source et les moyens de détection sur la trajectoire du rayonnement (R), et une indication sur le niveau du ménisque inférieur (3).
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