NON-ORIENTED ELECTRICAL STEEL SHEETS AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: LEE, SE IL, PARK, JUNE SOO, BAE, BYUNG KEUN, SONG, DAE HYUN
• Format: Patent
• Language: English; Korean
• Published: 08.06.2015
• Subjects: ALLOYS; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INDUCTANCES; MAGNETS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Disclosed are a non-oriented electrical steel sheet, and a method to manufacture the same. The non-oriented electrical steel sheet of the present invention comprises: less than or equal to 0.005 wt% of C (not including 0 wt%); less than or equal to 2 wt% of Si (not including 0 wt%); less than or equal to 0.08 wt% of Mn; less than or equal to 0.02 wt% of P (not including 0 wt%); 0.001-0.005 wt% of S; less than or equal to 0.005 wt% of Al; less than or equal to 0.005 wt% of N (not including 0 wt%); less than or equal to 0.005 wt% of Ti (not including 0 wt%); 0.05-0.2 wt% of either Sn or Sb; and the rest of Fe and unavoidably added impurities. The Si and the Mn satisfy 0.7 <=([Si]-[Mn])<=1.7, where ([Si], [Mn] respectively mean wt%). 무방향성 전기강판 및 그 제조방법이 개시된다. 본 발명에 의한 무방향성 전기강판은 중량 퍼센트(%)로, C: 0.005%이하(0%를 포함하지 않는다), Si:2%이하(0%를 포함하지 않는다), Mn: 0.08%이하, P:0.02%이하(0%를 포함하지 않는다), S:0.001~0.005%, Al: 0.005%이하, N:0.005%이하(0%를 포함하지 않는다), Ti: 0.005%이하(0%를 포함하지 않는다), Sn 및 Sb 중 적어도 하나가 0.05~0.2%, 잔부는 Fe 및 기타 불가피하게 첨가되는 불순물을 포함하며, 상기 Si와 Mn은 0.7 ≤([Si]-[Mn])≤1.7 (여기서, [Si], [Mn]는 각각 Si, Mn 의 중량 퍼센트(%)를 의미함) 을 만족한다.