Patent · US Active

Method for producing grain oriented magnetic steel strip

US8038806B2 · kind B2 · utility

2Cited by

4References

15Claims

0Family size

Assignee

Thyssenkrupp Steel AG · DE

Inventors

Klaus Gunther · Voerde, DE
Ludger Lahn · Moers, DE
Andreas Ploch · Dinslaken, DE
Eberhard Sowka · Dinslaken, DE

Key dates

Filing date	Jul 20, 2006
Grant date	Oct 18, 2011
Priority date	—
Expiry date	May 3, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C38/02
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method, which makes it possible to economically produce high-quality grain oriented magnetic steel sheet, utilizes a steel alloy with (in wt %) Si: 2.5-4.0%, C: 0.01-0.10 %, Mn: 0.02-0.50%, S and Se in contents, whose total amounts to 0.005-0.04%. The method utilizes an operational sequence whose individual routine steps (secondary metallurgical treatment of the molten metal in a vacuum-or ladle facility, continuous casting of the molten metal into a strand, dividing of the strand, heating in a facility standing inline, continuous hot rolling in a multi-stand hot rolling mill standing inline, cooling, coiling, cold rolling, recrystallization and decarburization annealing, application of an annealing separator, final annealing to form a Goss texture) are harmonized with one another, so that a magnetic steel sheet with optimized electromagnetic properties is obtained using conventional apparatus.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.