Method and device for hot-dip coating a metal strand

US8304029B2 · kind B2 · utility

Assignee

• SMS SIEMAG AG · DE

Inventors

• Rolf Brisberger · Issum, DE
• Bernhard Tenckhoff · Duisburg, DE
• Holger Behrens · Reutlingen, DE
• Bodo Falkenhahn · Mülheim an der Ruhr, DE
• Walter Trakowski · Duisburg, DE
• Michael Zielenbach · Siegen, DE
• Robert Jürgens · Remscheid, DE

Key dates

• Filing date: Nov 15, 2003
• Grant date: Nov 6, 2012
• Expiry date: Jul 13, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C2/524
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a device for hot-dip coating a metal strand (1), especially a steel strip, in which the metal strand (1) is vertically guided through a container (3) accommodating the molten coating metal (2) and through a guide channel (4) disposed upstream thereof. The inventive device comprises at least two inductors (5) disposed at both sides of the metal strand (1) in the area of the guide channel (4) that are used to generate an electromagnetic field for retaining the coating metal (2) in the container (3), and at least one sensor (6, 6′) for detecting the position (s) of the metal strand (1) in the area of the guide channel (4). In order to simplify and render more precise the detection of the position of the metal strand in the guide channel, the sensor for detecting the position of the metal strand (1) consists of two coils (6, 6′) that are disposed, when seen from the direction of conveyance (R) of the metal strand (1), within the height (H0) of the inductors (5) between the inductors (5) and the metal strand (1). The invention further relates to a method for hot-dip coating a metal strand.