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2 149 194

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IPC

(21) (22)

Application

98110413/02, 1998-06-01

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Start date

1998-06-01

(22)

Actual filing date

1998-06-01

(45)

Published

2000-05-20

(72)

Inventor

Nastich V.P.Frantsenjuk L.I.Cheglov A.E.Mindlin B.I.Gvozdev A.G.Logunov V.V.Okolelov O.P.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF PRODUCING ISOTROPIC ELECTRICAL-SHEET STEEL Russian patent published in 2000 - IPC

Abstract RU 2149194 C1

FIELD: metallurgy, particularly, production of electrical-sheet used in manufacture of electric motor magnetic circuits. SUBSTANCE: method includes melting, hot rolling, pickling, cold rolling, decarbonization-and-recrystallization annealing. In so doing, annealing temperature after cold rolling is determined with consideration of content of silicon and phosphorus from relation t = 500 +172.7[Si, %] - 276[P, %] ± 10 C with silicon content variation within 2.7-3.2% and phosphorus within 0.03-0.08%. EFFECT: higher level of magnetic properties of steel due to structure-texture state obtained by alloying with phosphorus. 2 tbl

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RU 2 149 194 C1

Authors

Nastich V.P.

Frantsenjuk L.I.

Cheglov A.E.

Mindlin B.I.

Gvozdev A.G.

Logunov V.V.

Okolelov O.P.

Dates

2000-05-20—Published

1998-06-01—Filed