Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Reexamination Certificate
2006-07-20
2011-10-18
Sheehan, John (Department: 1736)
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
C148S307000, C148S308000
Reexamination Certificate
active
08038806
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.
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Günther Klaus
Lahn Ludger
Ploch Andreas
Sowka Eberhard
Proskauer Rose LLP
Sheehan John
ThyssenKrupp Steel AG
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