Process for producing a coated metal strip

US9045829B2 · kind B2 · utility

Assignees

• BILSTEIN GMBH & CO. KG · DE
• NANO-X · JP

Inventors

• Dieter Krech · Hagen, DE
• Gerald Zwickel · Breidenbach, DE
• Stefan Sepeur · Wadgassen, DE
• Stefan Geodicke · Neunkirchen, DE

Key dates

• Filing date: Mar 15, 2011
• Grant date: Jun 2, 2015
• Expiry date: Sep 30, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process produces a coated metal strip from a semi-finished strip, in which the semi-finished strip is reeled off a coil. A corrosion protection layer is then applied to the semi-finished strip and the coated semi-finished strip is then reeled up to form a coil. The semi-finished strip is a cold-rolled strip obtained by cold rolling, cooling and recrystallization annealing. A medium containing metallic particles is applied to form the corrosion protection layer. The medium is a wet-chemical solution which is applied by spraying, dipping, squirting, flooding or rolling. The corrosion protection layer is dried on the cold-rolled strip by supplying heat at a temperature below the recrystallization annealing temperature of the cold-rolled strip after application of the medium and before reeling-up.