Device for hot dip coating a metal strip

US7476276B2 · kind B2 · utility

Assignee

• SMS DEMAG LLC · DE

Inventors

• Holger Behrens · Reutlingen, DE
• Rolf Brisberger · Issum, DE
• Hans-Georg Hartung · Pulheim, DE
• Bernhard Tenckhoff · Duisburg, DE
• Walter Trakowski · Duisburg, DE
• Michael Zielenbach · Siegen, DE

Key dates

• Filing date: Jun 16, 2004
• Grant date: Jan 13, 2009
• Expiry date: Jul 15, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C2/24
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a device for hot dip coating a metal bar (1), especially a steel strip, in which the metal bar (1) is directed vertically through a container (3) accommodating the molten coating metal (2) and through a guide channel (4) mounted upstream thereof. The inventive device comprises at least two inductors (5) which are arranged on both sides of the metal bar (1) in the area of the guide channel (4) and generate an electromagnetic field for retaining the coating metal (2) inside the container (3). In order to relax the coating bath, the distance (d) between the walls (6) that delimit the guide channel (4) is not kept constant in a direction (N) extending perpendicular to the surface of the metal strip (1) in the zone (H) of the vertical extension of the guide channel (4), which is located between the bottom side (7) thereof and the bottom area (8) of the container (3).