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2 223 338

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Application

2002119101/02, 2002-07-15

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Start date

2002-07-15

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Actual filing date

2002-07-15

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Published

2004-02-10

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Inventor

Nastich V.P.Mindlin B.I.Cheglov A.E.Logunov V.V.Gvozdev A.G.Barybin V.A.

(73)

Holder

Oao Metallurgicheskij Kombinat"

METHOD FOR MAKING ISOTROPIC ELECTRICAL STEEL Russian patent published in 2004 - IPC

Abstract RU 2223338 C1

FIELD: ferrous metallurgy, namely processes for making cold rolled isotropic electrical steel. SUBSTANCE: method comprises steps of melting, hot rolling, normalizing, etching, decarburizing- recrystallization annealing; selecting phosphorus concentration in metal depending upon silicon content according to equation P = -0,004[Si,%]2-0,02[Si,%]+0,168±0,02% at changing silicon content in range 1.4 - 3.4%. Such equation is satisfied when carbon content in steel after melting is no more than 0.015%. EFFECT: enhanced electromagnetic properties of cold rolled isotropic electrical steel. 1 ex, 1 tbl

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RU 2 223 338 C1

Authors

Nastich V.P.

Mindlin B.I.

Cheglov A.E.

Logunov V.V.

Gvozdev A.G.

Barybin V.A.

Dates

2004-02-10—Published

2002-07-15—Filed

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