Global Patent Index - EP 0468819 A1

EP 0468819 A1 19920129 - Method for manufacturing an oriented silicon steel sheet having improved magnetic flux density.

Title (en)

Method for manufacturing an oriented silicon steel sheet having improved magnetic flux density.

Title (de)

Verfahren zum Herstellen von kernorientierten Siliziumstahlblechen mit verbesserter magnetischer Flussdichte.

Title (fr)

Procédé pour la fabrication de tÔles d'acier au silicium à grains orientés et à densité de flux magnétique améliorée.

Publication

EP 0468819 A1 19920129 (EN)

Application

EP 91306880 A 19910726

Priority

JP 19782290 A 19900727

Abstract (en)

A method of manufacturing an oriented silicon steel sheet which achieves a high magnetic flux density while reducing the core loss. A silicon steel sheet containing Al and Sb as inhibitor components is cold-rolled once or a plurality of times. During cooling for annealing before final cold-rolling, a small strain is created on the sheet and the temperature is within a certain range. Carbide precipitation is suitably controlled to precipitate carbides comparatively coarsely in grains.

IPC 1-7

C21D 8/12

IPC 8 full level

C21D 8/12 (2006.01); H01F 1/16 (2006.01)

CPC (source: EP)

C21D 8/125 (2013.01); C21D 8/1227 (2013.01); C21D 8/1261 (2013.01); C21D 8/1266 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB SE

DOCDB simple family (publication)

EP 0468819 A1 19920129; EP 0468819 B1 19950419; CA 2048014 A1 19920128; CA 2048014 C 19970506; DE 69109010 D1 19950524; DE 69109010 T2 19960111; JP H0483823 A 19920317; JP H0784615 B2 19950913; KR 930011405 B1 19931206

DOCDB simple family (application)

EP 91306880 A 19910726; CA 2048014 A 19910726; DE 69109010 T 19910726; JP 19782290 A 19900727; KR 910012975 A 19910727