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Application

2002109326/02, 2002-04-10

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Start date

2002-04-10

(22)

Actual filing date

2002-04-10

(45)

Published

2003-12-27

(72)

Inventor

Skorokhodov V.N.Nastich V.P.Mindlin B.I.Cheglov A.E.Pimenov A.F.Barybin V.A.Sarychev I.S.Chernov P.P.Mamyshev V.A.Trajno A.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF PRODUCTION OF NONORIENTED ELECTRICAL-SHEET STEEL Russian patent published in 2003 - IPC

Abstract RU 2220212 C1

FIELD: metallurgy; particularly, production of nonoriented electrical-sheet (dynamo) steel. SUBSTANCE: method of production of nonoriented electrical-sheet steel incorporates steps of repeated cold rolling of hot-rolled strips, subsequent decarbonizing and recrystallization annealing. With the aim of enhancing electromagnet properties the repeated rolling is carried out within several stages with total reduction of 85-95 % with relationship between thickness of rolled strip and diameter of rolls being equal to 0.001-0.009; between stages of cold rolling trimming of cold-rolled strips takes place, while decarbonizing and recrystallization annealing processes are carried out under temperature of 780- 850 C and 900-1050 C respectively. EFFECT: enhancement of electromagnet properties with simultaneous reduction of quantity of process operations. 1 tbl, 2 ex

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RU 2 220 212 C1

Authors

Skorokhodov V.N.

Nastich V.P.

Mindlin B.I.

Cheglov A.E.

Pimenov A.F.

Barybin V.A.

Sarychev I.S.

Chernov P.P.

Mamyshev V.A.

Trajno A.I.

Dates

2003-12-27—Published

2002-04-10—Filed