Processing

Please wait...

Settings

Settings

1. WO1996003533 - ELECTRO-MAGNETIC PLUGGING MEANS FOR HOT DIP COATING POT

Publication Number WO/1996/003533
Publication Date 08.02.1996
International Application No. PCT/AU1995/000458
International Filing Date 26.07.1995
Chapter 2 Demand Filed 08.02.1996
IPC
C23C 2/24 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
14Removing excess of molten coatings; Controlling or regulating the coating thickness
24using magnetic or electric fields
CPC
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
  • BHP STEEL (JLA) PTY. LTD. [AU/AU]; 600 Bourke Street Melbourne, VIC 3000, AU (AllExceptUS)
  • MORRISON, Bruce, Robert [AU/AU]; AU (UsOnly)
  • OSTERBERG, Raymond, Charles [AU/AU]; AU (UsOnly)
  • PAYLING, Richard [AU/AU]; AU (UsOnly)
  • BAHARIS, Chris [AU/AU]; AU (UsOnly)
  • O'NEILL, James, Arthur [GB/AU]; AU (UsOnly)
  • JINKS, Damien [AU/AU]; AU (UsOnly)
  • ELLIS, Peter, James [NZ/AU]; AU (UsOnly)
Inventors
  • MORRISON, Bruce, Robert; AU
  • OSTERBERG, Raymond, Charles; AU
  • PAYLING, Richard; AU
  • BAHARIS, Chris; AU
  • O'NEILL, James, Arthur; AU
  • JINKS, Damien; AU
  • ELLIS, Peter, James; AU
Agents
  • CARTER SMITH & BEADLE; P.O. Box 296 Five Dock, NSW 2046, AU
Priority Data
PM 713328.07.1994AU
PN 256924.04.1995AU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTRO-MAGNETIC PLUGGING MEANS FOR HOT DIP COATING POT
(FR) BOUCHON ELECTROMAGNETIQUE POUR CUVE D'ENDUCTION A CHAUD PAR TREMPAGE
Abstract
(EN)
A hot dip coating pot (2) having a strip inlet passage (3) and electro-magnetic plugging means to prevent leakage of bath liquid from the pot through that passage, wherein: the plugging means comprises two magnetic field generators (7) disposed one on each side of the passage; each generator projects an oscillating magnetic field into the passage from at least two poles of opposite polarity that are adjacent the passage and spaced apart in the through direction of the passage; the said at least two poles of each generator are respectively in substantial alignment with the corresponding poles of the other in the transverse direction of the passage; the magnetic fields projected by the generators have flux patterns which are substantially mirror images with reference to a plane of reflection coinciding with a centre plane of the passage; and both generators operate at a frequency of more than seven kiloHertz. When no strip is present the fields combine and extend transversely of the passage. When a strip is present the fields not only plug the passage but also provide restraining forces to prevent deviation of the strip from its intended pass line.
(FR)
L'invention concerne une cuve d'enduction à chaud par trempage (2) dotée d'un passage d'entrée (3) de bande et d'un bouchon électromagnétique empêchant le liquide de trempe de fuir de la cuve par ce passage. Le bouchon comprend deux générateurs (7) de champ magnétique placés de chaque côté du passage et projetant chacun un champ magnétique oscillant dans ce dernier à partir de deux pôles de polarité opposée, adjacents audit passage et espacés dans le sens traversant du passage. Lesdits pôles au nombre au moins de deux de chaque générateur sont sensiblement alignés avec les pôles correspondants de l'autre générateur dans le sens transversal du passage. Les champs magnétiques projetés par les générateurs présentent des profils de flux correspondant sensiblement à des images symétriques par rapport à un plan de réflexion coïncidant avec un plan central du passage, les deux générateurs fonctionnant à une fréquence de plus de sept kiloHertz. Lorsqu'aucune bande n'est présente, les champs se combinent et s'étendent transversalement dans le passage. Lorsqu'une bande est présente, les champs non seulement bouchent le passage mais produisent également des forces de retenue pour empêcher la déviation de la bande par rapport à sa ligne de passage prévue.
Latest bibliographic data on file with the International Bureau