NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Provided are a non-oriented electrical steel sheet and a method for manufacturing same. This non-oriented electrical steel sheet contains, in wt%, 2.2-4.5% of Si, 1.0% or less (excluding 0%) of Mn, 0.020-0.100% of Al, 0.10-0.30% of Sn, 0.0005-0.0100% of As, 0.0005-0.0150% of Bi, 0.0050% or less (exc...

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Bibliographische Detailangaben
Hauptverfasser: LEE, Sang-Woo, HONG, Jae-Wan, PARK, June-Soo, JOO, Hyung-Don
Format: Patent
Sprache:eng ; fre ; kor
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Zusammenfassung:Provided are a non-oriented electrical steel sheet and a method for manufacturing same. This non-oriented electrical steel sheet contains, in wt%, 2.2-4.5% of Si, 1.0% or less (excluding 0%) of Mn, 0.020-0.100% of Al, 0.10-0.30% of Sn, 0.0005-0.0100% of As, 0.0005-0.0150% of Bi, 0.0050% or less (excluding 0%) of C, 0.0030% or less of S, and 0.0050% or less of N, with the remainder comprising Fe and other inevitable impurities, wherein F{110} is at least 30%, F[Goss] is at least 20%, F{100} is at least 10%, F[Goss] > F{100} is satisfied, and the size of grains in the microstructure is 30-250 µm. L'invention concerne une feuille d'acier électrique non orientée et son procédé de fabrication. Cette feuille d'acier électrique non orientée contient, en % en poids, de 2,2 à 4,5 % de Si, 1,0 % ou moins (à l'exclusion de 0 %) de Mn, de 0,020 à 0,100 % d'Al, de 0,10 à 0,30 % de Sn, de 0,0005 à 0,0100 % d'As, de 0,0005 à 0,0150 % de Bi, 0,0050 % ou moins (à l'exclusion de 0 %) de C, 0,0030 % ou moins de S, et 0,0050 % ou moins de N, le reste comprenant du Fe et d'autres impuretés inévitables, F{110} étant d'au moins 30 %, F[Goss] étant d'au moins 20 %, F{100} étant d'au moins 10 %, F[Goss] > F{100} étant satisfait, et la taille des grains dans la microstructure étant de 30 à 250 µm. 무방향성 전기강판 및 그 제조방법이 제공된다. 본 발명의 무방향성 전기강판은, 중량%로, Si: 2.2~4.5%, Mn: 1.0% 이하(0% 미포함), Al: 0.020~0.100%, Sn: 0.10~0.30%, As: 0.0005~0.0100%, Bi: 0.0005~0.0150%, C: 0.0050% 이하(0% 미포함), S: 0.0030% 이하, N: 0.0050% 이하, 잔부 Fe 및 기타 불가피한 불순물을 포함하며, F{110}가 30% 이상, F[Goss]이 20% 이상, F{100}가 10% 이상, 그리고 F[Goss] > F{100}를 만족하면서 미세조직 내에 결정립의 크기가 30~250㎛이다.