Device for hot-dip coating metal band

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 2/40 (2006.01) C23C 2/00 (2006.01) C23C 2/24 (2006.01)

Patent

CA 2259409

The invention relates to an apparatus for coating material in the form of a strip, in which a metal strip is passed through a container which holds the melted coating material and, underneath the melt bath level, has a channel which encloses the material in the form of a strip, in which channel currents are induced in the coating material by means of inductors and cause an electromagnetic force in order to hold the coating material back. In this case, the channel (7) is attached to the base of the container (1) such that it is easily detachable and comprises a plurality of parts (6a to 6d) which can be separated in the strip running direction, are sealed with respect to one another and can individually be moved away from the strip (3), transversely with respect to the strip running direction, in order to replace the channel (7) with the strip (3) located in it, after releasing the separation connection.

L'invention concerne un dispositif pour revêtir un matériau sous forme de bande. Dans ce dispositif, une bande métallique est guidée à travers une cuve qui contient un matériau de revêtement en fusion et présente, au-dessous du niveau du bain de fusion, un canal entourant le matériau sous forme de bande. Dans ce canal, des éléments d'induction induisent des flux dans le matériau de revêtement qui créent une force électromagnétique servant à retenir le matériau de revêtement. Le canal (7) est fixé au fond de la cuve (1) de façon à être facilement libérable et est constitué de plusieurs parties (6a à 6d) qui peuvent être séparées dans le sens de défilement de la bande et être étanchéifiées les unes par rapport aux autres. Ces parties peuvent être écartées une par une transversalement par rapport au sens de défilement de la bande (3) après séparation de la liaison libérable pour changer de canal (7) lorsque la bande (3) se trouve à l'intérieur.

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