EP 2278034 A4 20170125 - HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET AND PROCESS FOR PRODUCING THE HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET
Title (en)
HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET AND PROCESS FOR PRODUCING THE HIGH-STRENGTH NON-ORIENTED MAGNETIC STEEL SHEET
Title (de)
HOCHFESTES NICHTORIENTIERTES MAGNETISCHES STAHLBLECH UND VERFAHREN ZUR HERSTELLUNG DES HOCHFESTEN NICHTORIENTIERTEN MAGNETISCHEN STAHLBLECHS
Title (fr)
TÔLE D'ACIER MAGNÉTIQUE NON ORIENTÉE À HAUTE RÉSISTANCE ET PROCÉDÉ DE FABRICATION DE LA TÔLE D'ACIER MAGNÉTIQUE NON ORIENTÉE À HAUTE RÉSISTANCE
Publication
Application
Priority
- JP 2009057453 W 20090413
- JP 2008104940 A 20080414
Abstract (en)
[origin: EP2278034A1] A high-strength non-oriented electrical steel sheet contains: by mass%, C: not less than 0.002% nor more than 0.05%; Si: not less than 2.0% nor more than 4.0%; Mn: not less than 0.05% nor more than 1.0%; N: not less than 0.002% nor more than 0.05%; and Cu: not less than 0.5% nor more than 3.0%. An Al content is 3.0% or less, and when a Nb content (%) is set to [Nb], a Zr content (%) is set to [Zr], a Ti content (%) is set to [Ti], a V content (%) is set to [V], a C content (%) is set to [C], and an N content (%) is set to [N], Formula (1) and Formula (2) are satisfied. A balance is composed of Fe and inevitable impurities, a recrystallization area ratio is 50% or more, yield stress at a tensile test is 700 MPa or more, fracture elongation is 10% or more, and an eddy current loss We 10/400 (W/kg) satisfies Formula (3) in relation to a sheet thickness t (mm) of the steel sheet. 2.0 × 10 - 4 ¦ Nb / 93 + Zr / 91 + Ti / 48 + V / 51 1.0 × 10 - 3 ¦ C / 12 + N / 14 - Nb / 93 + Zr / 91 + Ti / 48 + V / 51 ¦ 3.0 × 10 - 3 We 10 / 400 ¦ 70 × t 2
IPC 8 full level
C22C 38/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP KR US)
C21D 8/1222 (2013.01 - EP KR US); C21D 8/1272 (2013.01 - EP KR US); C22C 38/001 (2013.01 - EP KR US); C22C 38/002 (2013.01 - EP US); C22C 38/004 (2013.01 - EP KR US); C22C 38/008 (2013.01 - EP US); C22C 38/02 (2013.01 - EP KR US); C22C 38/04 (2013.01 - EP US); C22C 38/06 (2013.01 - EP US); C22C 38/08 (2013.01 - EP US); C22C 38/12 (2013.01 - EP KR US); C22C 38/14 (2013.01 - EP KR US); C22C 38/16 (2013.01 - EP KR US); H01F 1/147 (2013.01 - KR); H01F 1/16 (2013.01 - EP KR US); C21D 2201/05 (2013.01 - EP US); C21D 2211/004 (2013.01 - EP KR US); H01F 1/147 (2013.01 - EP US)
Citation (search report)
- [XAI] WO 2007063581 A1 20070607 - SUMITOMO METAL IND [JP], et al
- [I] EP 1580289 A1 20050928 - JFE STEEL CORP [JP]
- [A] JP 2007162097 A 20070628 - SUMITOMO METAL IND
- [A] EP 1679386 A1 20060712 - NIPPON STEEL CORP [JP]
- [AD] JP 2004084053 A 20040318 - NIPPON STEEL CORP
- See references of WO 2009128428A1
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
EP 2278034 A1 20110126; EP 2278034 A4 20170125; EP 2278034 B1 20200212; BR PI0910984 A2 20160105; BR PI0910984 B1 20180605; BR PI0910984 B8 20180925; CN 102007226 A 20110406; CN 102007226 B 20131106; JP 4659135 B2 20110330; JP WO2009128428 A1 20110804; KR 20100122116 A 20101119; PL 2278034 T3 20200629; TW 200946695 A 20091116; TW I404806 B 20130811; US 2011056592 A1 20110310; WO 2009128428 A1 20091022
DOCDB simple family (application)
EP 09732579 A 20090413; BR PI0910984 A 20090413; CN 200980113090 A 20090413; JP 2009057453 W 20090413; JP 2010508206 A 20090413; KR 20107022839 A 20090413; PL 09732579 T 20090413; TW 98112291 A 20090414; US 92277209 A 20090413