Process and hot-dip coating system for stabilizing a strip...

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

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

Patent

CA 2697194

The invention relates to a process for stabilizing a strip guided between stripping dies of a hot-dip coating system and provided with a coating, and also to a corresponding hot-dip coating system. In this context, stabilizing forces are exerted on the strip on the basis of the detected strip position by means of spools which are arranged downstream of the stripping dies in the strip running direction and act electromagnetically and in a contactless fashion on the steel strip running through. In order to improve the stabilization of the strip in the region of the stripping die, the invention proposes that the distance between the line of action of the strip-stabilizing device and the stripping dies be adjusted to a value <= a distance threshold value which is determined as a function of the strip width taking into account a factor Phi, wherein the factor Phi is calculated as a function of the strip thickness and the strip tension.

L'invention concerne un procédé de stabilisation d'un feuillard enduit d'un revêtement et guidé entre des buses de raclage d'une installation de galvanisation à chaud ainsi qu'une installation de galvanisation à chaud correspondante. En fonction de la position du feuillard saisie, des forces stabilisatrices sont exercées sur le feuillard par des bobines agissant sur le feuillard d'acier en déplacement, ces bobines ayant une action électromagnétique sans contact et étant disposées en aval des buses de raclage dans le sens de déplacement du feuillard. Afin de mieux stabiliser le feuillard dans la zone des buses de raclage, l'espacement entre la ligne d'action du dispositif de stabilisation de feuillard et les buses de raclage est réglé à une valeur = à une valeur d'espacement seuil, laquelle est déterminée en fonction de la largeur du feuillard et d'un facteur Phi qui est calculé en fonction de l'épaisseur et de tension du feuillard.

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