GRAIN ORIENTED ELECTRICAL STEEL SHEET METHOD FOR MANUFACTURING THE SAME

• Main Authors: PARK CHANG SOO, HAN KYU SEOK, SEO JIN WOOK, KIM JAE KYOUM
• Format: Patent
• Language: English; Korean
• Published: 06.04.2020
• 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

The present invention is intended to provide a grain-oriented electrical steel sheet with excellent productivity and magnetic properties and a manufacturing method thereof. A grain-oriented electrical steel sheet according to one embodiment of the present invention includes: 2.0 to 4.5 wt% of Si; equal to or less than 0.005 wt% (excluding 0 wt%) of C; 0.001 to 0.08 wt% of Mn; 0.001 to 0.1 wt% of Cu; equal to or less than 0.003 wt% (excluding 0 wt%) of N; 0.0005 to 0.05 wt% of S; 0.0005 to 0.05 wt% of Se; 0.0001 to 0.01 wt% of B; 0.01 to 0.2 wt% of Mo; 0.0001 to 0.01 wt% of Ti; 0.0001 to 0.02 wt% of V; 0.0001 to 0.02 wt% of Nb; and the balance of Fe and other inevitable impurities. 본 발명의 일 실시예에 의한 방향성 전기강판은 중량%로, Si: 2.0 내지 4.5%, C: 0.005% 이하(0%를 제외함), Mn: 0.001 내지 0.08%, Cu: 0.001 내지 0.1%, N: 0.003% 이하(0%를 제외함), S:0.0005 내지 0.05%, Se: 0.0005 내지 0.05%, B: 0.0001 내지 0.01%, Mo: 0.01 내지 0.2%, Ti:0.0001 내지 0.01%, V:0.0001 내지 0.02%, 및 Nb:0.0001 내지 0.02%를 포함하고, 잔부는 Fe 및 기타 불가피한 불순물을 포함한다.