HOT-ROLLED NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD FOR MANUFACTURING SAME

A hot-rolled non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 2.8-4.0% of Si, 0.1-1.3% of Al, and 0.3-2.0% of Mn, with the remainder comprising Fe and inevitable impurities, and satisfies expression 1 below. [Expression 1]: 1.1≤Hv1/HV2≤1.5 (In...

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Bibliographische Detailangaben
Hauptverfasser:	KWON, Soobin, KIM, Yun Su
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A hot-rolled non-oriented electrical steel sheet according to an embodiment of the present invention contains, in wt%, 2.8-4.0% of Si, 0.1-1.3% of Al, and 0.3-2.0% of Mn, with the remainder comprising Fe and inevitable impurities, and satisfies expression 1 below. [Expression 1]: 1.1≤Hv1/HV2≤1.5 (In expression 1, HV1 represents the hardness measured at the surface of the steel sheet, and HV2 represents the hardness measured at half the thickness of the steel sheet.) Une feuille d'acier électrique non orientée laminée à chaud selon un mode de réalisation de la présente invention contient, en % en poids, 2,8 à 4,0 % de Si, 0,1 à 1,3 % d'Al, et 0,3 à 2,0 % de Mn, le reste comprenant du Fe et des impuretés inévitables, et satisfait l'expression 1 ci-dessous. [Expression 1] : 1,1 ≤ HV1 / HV2 ≤ 1,5 (dans l'expression 1, HV1 représente la dureté mesurée à la surface de la feuille d'acier, et HV2 représente la dureté mesurée à la moitié de l'épaisseur de la feuille d'acier.) 본 발명의 일 실시예에 의한 열연 무방향성 전기강판은 중량%로, Si : 2.8 내지 4.0%, Al : 0.1 내지 1.3%, Mn : 0.3 내지 2.0% 및 잔부 Fe 및 불가피한 불순물을 포함하고, 하기 식 1을 만족한다. [식 1] 1.1≤ Hv1/HV2 ≤1.5 (식 1에서 HV1은 강판 표면에서 측정한 경도를 나타내고, HV2는 강판 두께의 1/2 지점에서 측정한 경도를 나타낸다.)