METHOD OF PRODUCING GRAIN ORIENTED SILICON STEEL SHEETS HAVING LESS IRON LOSS

• Main Authors: KOMATSUBARA, MICHIRO, ISHITOBI, HIROTAKE, HAYAKAWA, YASUYUKI, KAN, TAKAHIRO
• Format: Patent
• Language: English; Korean
• Published: 01.04.1999
• Edition: 6
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

주요 인히비터로서 MnSe를 함유하는 입자 방향성 실리콘 강판에 있어서, 자속밀도의 증가 및 제품두께의 얇음을 실현, 결정입자의 미세한 분산에 의해서 철손을 줄일 수 있으며, 한편 2차 재결정의 안정성을 이용할 수도 있다. 이 경우에, 0.02 ~ 0.30 % 의 Cu를 상기의 입자 방향성 실리콘 강판의 슬랩에 첨가하고, 특히, 탈탄소둔 및 / 또는 최종 마무리 소둔은 특별한 조건하에서 실시한다. In grain oriented silicon steel sheets containing MnSe as a main inhibitor, an iron loss is reduced by increasing the magnetic flux density and realizing the thinning of product thickness and fine division of crystal grains while utilizing the stability of secondary recrystallization as a merit of such a sheet. In this case, 0.02-0.30% of Cu is added to a slab of the above grain oriented silicon steel, and particularly the decarburization annealing and/or the final finish annealing are carried out under particular conditions.