GRAIN ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

• Main Authors: KIM JAEKYOUM, YANG ILNAM, KO KYUNGJUN
• Format: Patent
• Language: English; Korean
• Published: 27.06.2024
• Subjects: ALLOYS; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; 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; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

본 발명은 방향성 전기강판 및 이의 제조방법에 관한 것으로, 방향성 전기강판은 {110} 방위를 갖는 결정립의 크기가 하기 식 1을 만족하고, 방위에서 벗어난 각도가 3 ° 이내에 해당하는 결정립경의 면적분율이 60% 이상일 수 있다. <식 1> W/L ≤ 1.5 (상기 식 1에서 W는 TD 방향(2차 재결정립의 폭 방향) 직경이고, L은 RD 방향(2차 재결정립의 길이 방향) 직경을 의미한다) The present invention relates to a grain oriented electrical steel sheet and a method of manufacturing same, wherein in the grain oriented electrical steel sheet, the size of crystal grains having the {110} orientation may satisfy expression 1, and the area fraction of crystal grains corresponding to a deviation angle of within 3° from the orientation may be 60% or more. <Expression 1> W/L ≤ 1.5 (In expression 1, W represents the diameter in the TD direction (width direction of secondary recrystallized grain) and L represents the diameter in the RD direction (longitudinal direction of secondary recrystallized grain)