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2 147 616

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IPC

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Application

98122759/02, 1998-12-15

(24)

Start date

1998-12-15

(22)

Actual filing date

1998-12-15

(45)

Published

2000-04-20

(72)

Inventor

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

(73)

Holder

Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"Uchrezhdenie Nauchno-Proizvodstvennyj Institut Ao

PROCESS OF PRODUCTION OF ISOTROPIC ELECTRICAL-SHEET STEEL Russian patent published in 2000 - IPC

Abstract RU 2147616 C1

FIELD: ferrous metallurgy. SUBSTANCE: process refers to production of isotropic electrical-sheet steel with thickness of 0.50 mm in rolls used to manufacture magnetic circuits of electric machines. Improvement of magnetic properties of isotropic steel is achieved thanks to selection of normalization temperature that takes into account content of silicon and phosphorus in steel. Temperature is found by equation t=675+[50 Si, %]-0.50[100P,%]²+10 C with content of silicon within limits 2.7-3.3 per cent and phosphorus between 0.03-0.08 per cent by weight. EFFECT: improved magnetic properties of isotropic steel. 1 tbl

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RU 2 147 616 C1

Authors

Nastich V.P.

Frantsenjuk L.I.

Cheglov A.E.

Mindlin B.I.

Gvozdev A.G.

Logunov V.V.

Dates

2000-04-20—Published

1998-12-15—Filed