방향성 전기 강판의 제조 방법

• Main Authors: TERASHIMA TAKASHI, YAMADA TAKUYA
• Format: Patent
• Language: Korean
• Published: 27.12.2023
• 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

제조 비용의 증가를 초래하지 않고, 판폭 방향의 자기 특성의 균일성이 우수한 방향성 전기 강판을 제조하는 방법을 제공한다. 건조 후의 어닐링 분리제의 강열 감량 : IGLOSS (질량％) , 냉연 강판의 보관 시간 : T (hr) , 및, 냉연 강판의 보관 환경에 있어서의 이산화탄소 농도 : A (질량ppm) 에 대해, 다음 식 (1) 의 관계를 만족시킨다. A×IGLOSS≤-1500×Ln(T)＋9000··· (1) Provided is a method for manufacturing a grain-oriented electrical steel sheet with excellent uniformity of magnetic properties in the sheet transverse direction without increasing production costs. An ignition loss of an annealing separator after drying: IGLOSS (mass%), a storage time of a cold-rolled steel sheet: T (hr), and a carbon dioxide concentration in a storage environment of the cold-rolled steel sheet: A (mass ppm) satisfy the following formula (1): A×IGLOSS≤−1500×LnT+9000