무방향성 전자 강판 및 그 제조 방법

• Main Authors: YASHIKI HIROYOSHI, TOMITA MIHO, TAKEDA KAZUTOSHI, NATORI YOSHIAKI, MATSUMOTO TAKUYA
• Format: Patent
• Language: Korean
• Published: 01.12.2022
• 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

모재의 화학 조성이, 질량％로, C: 0.0010 내지 0.0040％, Si: 4.0 내지 5.0％, Mn: 0.20％ 이하, Al: 0.010％ 이상 0.050％ 미만, P: 0.030％ 이하, S: 0.0030％ 이하, N: 0.0005 내지 0.0030％, O: 0.0100 내지 0.0400％, Ca: 0.0010％ 미만, Ti: 0.0050％ 미만, Nb: 0.0050％ 미만, Zr: 0.0050％ 미만, V: 0.0050％ 미만, Cu: 0.20％ 미만, Ni: 0.50％ 미만, Sn: 0 내지 0.05％, Sb: 0 내지 0.05％, 잔부: Fe 및 불순물이고, 모재의 표면으로부터 깊이 방향으로 10㎛의 위치까지를 제외한 영역에서의 O 함유량이 0.0050％ 미만인, 무방향성 전자 강판. A non-oriented electrical steel sheet including a base metal that has a chemical composition including, in mass%, C: 0.0010 to 0.0040%, Si: 4.0 to 5.0%, Mn: 0.20% or less Al: 0.010% or more and less than 0.050%, P: 0.030% or less, S: 0.0030% or less, N: 0.0005 to 0.0030%, O: 0.0100 to 0.0400%, Ca: less than 0.0010%, Ti: less than 0.0050%, Nb: less than 0.0050%, Zr: less than 0.0050%, V: less than 0.0050%, Cu: less than 0.20%, Ni: less than 0.50%, Sn: 0 to 0.05%, Sb: 0 to 0.05%, and a balance: Fe and impurities, in which the base metal has an O content of less than 0.0050% in a region excluding a portion from a surface of the base metal to a position of 10 µm in a depth direction of the base metal.