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IPC

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Application

98111117/02, 1998-06-09

(22)

Actual filing date

1998-06-09

(45)

Published

1999-07-20

(72)

Inventor

Nastich V.P.Zaverjukha A.A.Mindlin B.I.Logunov V.V.Gvozdev A.G.Tishchenko A.D.Cheglov A.E.

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF ISOTROPIC ELECTRICAL STEEL PRODUCTION Russian patent published in 1999 - IPC

Abstract RU 2133285 C1

FIELD: metallurgy, particularly, production of isotropic electrical steel used in manufacture of electric motor magnetic circuits. SUBSTANCE: method includes melting, hot rolling, cooling, pickling of hot-rolled strips, cold rolling, decarburizing-recrystallization annealing. After hot rolling with at least 13% of reduction in last pass, cooling of hot-rolled strips for 6-20 s is carried out in air and then with water spraying. The cooling process at the end of hot rolling results in fully recrystallized structure with equiaxed grains that leads to increase of favorable texture components, particularly (110). EFFECT: excluded normalizing operation from process without impairing magnetic properties of ready made steel. 1 tbl

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RU 2 133 285 C1

Authors

Nastich V.P.

Zaverjukha A.A.

Mindlin B.I.

Logunov V.V.

Gvozdev A.G.

Tishchenko A.D.

Cheglov A.E.

Dates

1999-07-20—Published

1998-06-09—Filed