EP 2840157 A1 20150225 - Method for producing a non-grain oriented electrical steel strip or sheet and a non-grain oriented electrical steel strip or sheet produced according to this method
Title (en)
Method for producing a non-grain oriented electrical steel strip or sheet and a non-grain oriented electrical steel strip or sheet produced according to this method
Title (de)
Nicht kornorientiertes Elektroband oder -blech und Verfahren zur Erzeugung eines nicht kornorientierten Elektrobands oder -blechs
Title (fr)
Bande ou tôle électrique à grains non orientés et procédé de production d'une bande ou tôle électrique à grains non orientés
Publication
Application
Priority
EP 13180889 A 20130819
Abstract (en)
[origin: WO2015024723A1] The invention relates to a non-grain-oriented electrical steel strip or electrical steel sheet for electrical applications, produced from a steel which, in addition to iron and unavoidable impurities, contains (in wt%) Si: 2.0 - 4.5%, Zr: 0.03 - 0.3%, Al: up to 2.0%, Mn: up to 1.0%, C: up to 0.01%, N: up to 0.01%, S: up to 0.001%, P: up to 0.015%, wherein ternary Fe-Si-Zr precipitations are present in the microstructure of the electrical steel strip or electrical steel sheet. By means of precipitation hardening or particle hardening, the ternary Fe-Si-Zr precipitations present in the microstructure of an electrical steel strip or electrical steel sheet according to the invention increase the strength of non-grain-oriented electrical steel strips or electrical steel sheets produced from steel according to the invention, without said ternary Fe-Si-Zr precipitations having a decisive influence on the electromagnetic properties. The invention further relates to a method for producing such electrical steel strips and electrical steel sheets.
Abstract (de)
Die Erfindung betrifft ein nicht kornorientiertes Elektroband oder -blech für elektrotechnische Anwendungen, hergestellt aus einem Stahl, der neben Eisen und unvermeidbaren Verunreinigungen (in Gew.-%) Si: 2,0 - 4,5 %, Zr: 0,03 - 0,3 %, Al: bis zu 2,0 %, Mn: bis zu 1,0 %, C: bis zu 0,01 %, N: bis zu 0,01 %, S: bis zu 0,001 %, P: bis zu 0,015 %, enthält, wobei im Gefüge des Elektrobands oder -blechs ternäre Fe-Si-Zr-Ausscheidungen vorliegen. Die im Gefüge eines erfindungsgemäßen Elektrobands oder -blechs vorliegenden ternären Fe-Si-Zr-Ausscheidungen steigern die Festigkeit von aus erfindungsgemäßem Stahl gefertigten, nicht kornorientierten Elektrobändern und -blechen durch Ausscheidungs- bzw. Teilchenhärtung, ohne einen entscheidenden Einfluss auf die elektromagnetischen Eigenschaften zu haben. Die Erfindung stellt darüber hinaus ein Verfahren zum Herstellen solcher Elektrobänder und -bleche zur Verfügung.
IPC 8 full level
C21D 6/00 (2006.01); C21D 8/02 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/14 (2006.01); H01F 1/147 (2006.01); H01F 1/16 (2006.01)
CPC (source: EP US)
C21D 6/005 (2013.01 - EP US); C21D 6/008 (2013.01 - EP US); C21D 8/0205 (2013.01 - EP US); C21D 8/0236 (2013.01 - EP US); C21D 8/0273 (2013.01 - EP US); C21D 8/1222 (2013.01 - EP US); C21D 8/1227 (2013.01 - EP US); C21D 8/1233 (2013.01 - EP US); C21D 8/1272 (2013.01 - EP US); C21D 9/46 (2013.01 - EP US); C21D 9/52 (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 38/02 (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); H01F 1/16 (2013.01 - EP US); H01F 1/14775 (2013.01 - EP US)
Citation (applicant)
- US 5084112 A 19920128 - TACHINO ICHIRO [JP], et al
- JP 2005264315 A 20050929 - NIPPON STEEL CORP
- DU, YONG; XIONG; WEI; ZHANG; WEIWEI; CHEN; HAILIN; SUN; WEIHUA: "Iron - Silicon - Zirconium", 2009, SPRINGER-VERLAG
Citation (search report)
- [X] JP H1112701 A 19990119 - NIPPON KOKAN KK
- [X] JP 2010121150 A 20100603 - SUMITOMO METAL IND
- [X] JP 2010018857 A 20100128 - SUMITOMO METAL IND
- [X] JP S5983723 A 19840515 - KOBE STEEL LTD
- [X] GB 2057500 A 19810401 - BRITISH STEEL CORP
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2840157 A1 20150225; EP 2840157 B1 20190403; BR 112016003059 B1 20200310; CN 105473751 A 20160406; CN 105473751 B 20180112; JP 2016535168 A 20161110; JP 6480446 B2 20190313; KR 102298564 B1 20210907; KR 20160044569 A 20160425; US 2016203897 A1 20160714; WO 2015024723 A1 20150226
DOCDB simple family (application)
EP 13180889 A 20130819; BR 112016003059 A 20140722; CN 201480046092 A 20140722; EP 2014065729 W 20140722; JP 2016535380 A 20140722; KR 20167007264 A 20140722; US 201414912381 A 20140722