EP 0438592 B1 19960508 - PRODUCTION METHOD OF UNIDIRECTIONAL ELECTROMAGNETIC STEEL SHEET HAVING EXCELLENT IRON LOSS AND HIGH FLUX DENSITY
Title (en)
PRODUCTION METHOD OF UNIDIRECTIONAL ELECTROMAGNETIC STEEL SHEET HAVING EXCELLENT IRON LOSS AND HIGH FLUX DENSITY
Title (de)
HERSTELLUNGSVERFAHREN VON ELEKTROBLECHEN MIT GOSS-TEXTUR, DIE AUSGEZEICHNETE EISENVERLUSTWERTE UND HOHE FLUSSDICHTE HABEN
Title (fr)
PROCEDE DE PRODUCTION D'UNE TOLE D'ACIER ELECTROMAGNETIQUE UNIDIR ECTIONNELLE SE CARACTERISANT PAR UNE PERTE DE FER EXTREMEMENT BASSE ET PAR UNE DENSITE DE FLUX MAGNETIQUE ELEVEE
Publication
Application
Priority
- JP 3332088 A 19880216
- JP 8900826 W 19890815
Abstract (en)
[origin: WO9102823A1] This invention provides a unidirectional electromagnetic steel sheet having a high flux density and an extremely low iron loss by winding a steel sheet in a coil form, applying a high temperature finish annealing, adjusting a mean grain size of secondary recrystallized grains inside a roll surface to 11 SIMILAR 50 m/m and applying tension coating and artificial magnetic domain control treatment to a unidirectional electromagnetic steel sheet having a flux density Ba of at least 1.88 to provide it with a tension of at least 0.7 kg/mm<2>.
IPC 1-7
IPC 8 full level
C21D 8/12 (2006.01); C21D 9/46 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP)
C21D 8/12 (2013.01); C21D 8/1294 (2013.01); C21D 8/125 (2013.01); C21D 8/1272 (2013.01); C21D 8/1288 (2013.01)
Citation (examination)
- JP H06250413 A 19940909 - CANON KK
- JP H06254085 A 19940913 - SHIMADZU CORP
- FR 2388383 A1 19781117 - NIPPON STEEL CORP [JP]
- DE 2816880 A1 19781019 - NIPPON STEEL CORP
- EP 0008385 A1 19800305 - NIPPON STEEL CORP [JP]
- FR 2236009 A1 19750131 - NIPPON STEEL CORP [JP]
- FR 2007129 A1 19700102 - YAWATA IRON & STEEL CO
- FR 2194788 A1 19740301 - NIPPON STEEL CORP [JP]
- DE 3229295 A1 19830303 - NIPPON STEEL CORP [JP]
- EP 0234443 B1 19950802 - NIPPON STEEL CORP [JP]
- EP 0184891 A1 19860618 - NIPPON STEEL CORP [JP]
- EP 0229646 A2 19870722 - NIPPON STEEL CORP [JP]
- Les tôles magnétiques à grains orientés: évolution et perspectives,J.C. Bavay, Mémoires et Etudes Scientifiques Revue de Métallurgie - Juillet-Août, 1985
- Power from designers domains", Michael Daniels, Physics World 1, December 1988
- A. Gillner et al.: "Reducing core loss of high grain oriented electrical steel by laser scribing", Proc. 5th Int. Conf. Lasers in Manufacturing, September 1988, page 137-143
- "Laser Processing Fundamental Applications and Systems Engineering", SPIE Vol. 668 (1986), page 116
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9102823 A1 19910307; DE 68926457 D1 19960613; DE 68926457 T2 19970102; EP 0438592 A1 19910731; EP 0438592 A4 19931020; EP 0438592 B1 19960508; JP H01208421 A 19890822; JP H0768580 B2 19950726
DOCDB simple family (application)
JP 8900826 W 19890815; DE 68926457 T 19890815; EP 89909241 A 19890815; JP 3332088 A 19880216