EP 2520681 A2 20121107 - NON-ORIENTED ELECTRICAL STEEL SHEET HAVING SUPERIOR MAGNETIC PROPERTIES AND A PRODUCTION METHOD THEREFOR
Title (en)
NON-ORIENTED ELECTRICAL STEEL SHEET HAVING SUPERIOR MAGNETIC PROPERTIES AND A PRODUCTION METHOD THEREFOR
Title (de)
NICHTKORNORIENTIERTES ELEKTROBLECH MIT HERVORRAGENDEN MAGNETISMUSEIGENSCHAFTEN UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
TÔLE MAGNÉTIQUE EN ACIER NON ORIENTÉ PRÉSENTANT DES PROPRIÉTÉS MAGNÉTIQUES SUPÉRIEURES ET PROCÉDÉ DE PRODUCTION DE CELLE-CI
Publication
Application
Priority
- KR 20100135943 A 20101227
- KR 20100135004 A 20101224
- KR 20100135003 A 20101224
- KR 20090131992 A 20091228
- KR 20090131990 A 20091228
- KR 2010009380 W 20101228
Abstract (en)
The present invention relates to a non-oriented electrical steel sheet. Provided are: a non-oriented electrical steel sheet having outstanding magnetic properties and comprising, as percentages by weight, from 1.0 to 3.0% of Al, from 0.5 to 2.5% of Si, from 0.5 to 2.0% of Mn, from 0.001 to 0.004% of N, from 0.0005 to 0.004% of S and a balance of Fe and other unavoidably incorporated impurities, wherein the Al, Mn, N and S are included so as to satisfy the compositional formulae {[Al]+[Mn]}‰¤3.5, 0.002‰¤{[N]+[S]}‰¤0.006, 300‰¤{([Al]+[Mn])/([N]+[S])}‰¤1,400; and a production method therefor. By optimising the Al, Si, Mn, N and S added components in this way, the distribution density of coarse inclusions is increased, thereby making it possible to improve crystal-grain growth properties and domain wall motility and so produce the highest grade of non-oriented electrical steel sheet having superior magnetic properties, low hardness, and superior customer workability and productivity.
IPC 8 full level
C21D 8/12 (2006.01); C22C 38/00 (2006.01)
CPC (source: EP US)
C21D 8/12 (2013.01 - EP US); C22C 38/001 (2013.01 - EP US); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP US); C22C 38/008 (2013.01 - EP US); C22C 38/02 (2013.01 - EP US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/14 (2013.01 - EP US); C22C 38/60 (2013.01 - EP US); H01F 1/16 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2520681 A2 20121107; EP 2520681 A4 20141119; EP 2520681 B1 20181024; CN 102906289 A 20130130; CN 102906289 B 20160323; JP 2013515170 A 20130502; JP 5642195 B2 20141217; US 2012267015 A1 20121025; WO 2011081386 A2 20110707; WO 2011081386 A3 20111201
DOCDB simple family (application)
EP 10841218 A 20101228; CN 201080059853 A 20101228; JP 2012545866 A 20101228; KR 2010009380 W 20101228; US 201013514342 A 20101228