EP 1473371 B1 20061025 - Process for manufacturing non grain-oriented magnetic steel sheet and sheet obtained by this process
Title (en)
Process for manufacturing non grain-oriented magnetic steel sheet and sheet obtained by this process
Title (de)
Verfahren zum Herstellen nicht kornorientierter Elektrobleche und nach diesem Verfahren hergestellte Bleche
Title (fr)
Procédé de fabrication de tole d'acier magnétique à grains non orientés et tole obtenue par le procédé
Publication
Application
Priority
- EP 97400114 A 19970121
- FR 9600808 A 19960125
Abstract (en)
[origin: EP0786528A1] A magnetisable sheet with non-oriented grains is made from steel, which is prepared under vacuum and contains 0.05-0.5% manganese and less than 0.5% silicon, 0.03% aluminium, 0.20% phosphorous, 0.015% sulphur, and 0.01% each of carbon, nitrogen and oxygen. A slab of the steel is heated to below 1300 deg. C and hot-rolled, with a final temperature below 950 deg. C, then wound into a roll at over 550 deg. C to facilitate crystallisation. Subsequently the steel is scoured, cold-rolled in at least one stage to reduce its thickness to no more than 1.5 mm and then annealed. Also claimed are the sheets of steel of various thicknesses and defined in terms of their magnetisation and hysteresis losses.
IPC 8 full level
C21D 8/12 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); H01F 1/147 (2006.01)
CPC (source: EP)
C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/60 (2013.01); H01F 1/14775 (2013.01); C21D 8/1266 (2013.01); C21D 8/1272 (2013.01); C21D 8/1277 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
EP 0786528 A1 19970730; EP 0786528 B1 20040929; AT E278041 T1 20041015; AT E343651 T1 20061115; DE 69730884 D1 20041104; DE 69730884 T2 20051117; DE 69736868 D1 20061207; DE 69736868 T2 20070606; EP 1473371 A2 20041103; EP 1473371 A3 20050413; EP 1473371 B1 20061025; ES 2230591 T3 20050501; ES 2276191 T3 20070616; FR 2744135 A1 19970801; FR 2744135 B1 19980227
DOCDB simple family (application)
EP 97400114 A 19970121; AT 04014453 T 19970121; AT 97400114 T 19970121; DE 69730884 T 19970121; DE 69736868 T 19970121; EP 04014453 A 19970121; ES 04014453 T 19970121; ES 97400114 T 19970121; FR 9600808 A 19960125