Method for coating a hot-rolled or cold-rolled steel flat product containing 6-30 wt% Mn

US8506731B2 · kind B2 · utility

Assignee

• ThyssenKrupp Steel Europe AG · DE

Inventors

• Manfred Meurer · Rheinberg, DE
• Ronny Leuschner · Dresden, DE
• Michael Steinhorst · Essen, DE

Key dates

• Filing date: Jan 21, 2009
• Grant date: Aug 13, 2013
• Expiry date: Jul 2, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D8/0273
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for coating a hot-rolled or cold-rolled steel flat product, containing 6-30% wt. Mn, with a metallic protective layer by hot-clip coating in a melt bath. The coating, achieved with increased production reliability, is optimised by the steel flat product being subjected to a pickling treatment in which the manganese oxide adhering to the steel flat product is essentially fully removed in the pickling bath before the steel flat product enters the melt bath.