PRODUCTION OF GRAIN ORIENTED SILICON STEEL SHEET HAVING LOW IRON LOSS

PURPOSE:To produce a grain oriented silicon steel sheet having high magnetic flux density and low iron loss by heating a slab consisting of the specific compsn. for the grin oriented silicon steel sheet to a specific temp. then subjecting the slab to hot rolling, cold rolling and decarburization ann...

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Main Authors SUGA YOZO, NOZAWA TADAO, USHIGAMI YOSHIYUKI, NAKAYAMA TADASHI, KONNO TOYOHIKO, YABUMOTO MASAO
Format Patent
LanguageEnglish
Published 23.08.1986
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Abstract PURPOSE:To produce a grain oriented silicon steel sheet having high magnetic flux density and low iron loss by heating a slab consisting of the specific compsn. for the grin oriented silicon steel sheet to a specific temp. then subjecting the slab to hot rolling, cold rolling and decarburization annealing then coating a separating agent for annealing thereon and subjecting the steel sheet to secondary recrystallization annealing under specific conditions. CONSTITUTION:The slab for the grain oriented silicon steel sheet consisting of 0.025-0.075% C, 3.0-4.5% Si, 0.010-0.060% sol. Al, 0.0030-0.0130% N, <=0.007% S, 0.08-0.45% Mn, 0.015-0.045% P, 0.07-0.25% Cr and the balance Fe and unavoidable impurities is heated to the temp. below 1,280 deg.C and is hot rolled. The hot rolled sheet is subjected to cold rolling to a final sheet thickness then to decarburization annealing. After the separating agent for annealing is coated on such steel sheet, the steel sheet is subjected to secondary recrystallization annealing while a temp. gradient of >=2.5 deg.C/cm is applied to the steel sheet in the boundary part between the primary recrystallization region and the secondary recrystallization region.
AbstractList PURPOSE:To produce a grain oriented silicon steel sheet having high magnetic flux density and low iron loss by heating a slab consisting of the specific compsn. for the grin oriented silicon steel sheet to a specific temp. then subjecting the slab to hot rolling, cold rolling and decarburization annealing then coating a separating agent for annealing thereon and subjecting the steel sheet to secondary recrystallization annealing under specific conditions. CONSTITUTION:The slab for the grain oriented silicon steel sheet consisting of 0.025-0.075% C, 3.0-4.5% Si, 0.010-0.060% sol. Al, 0.0030-0.0130% N, <=0.007% S, 0.08-0.45% Mn, 0.015-0.045% P, 0.07-0.25% Cr and the balance Fe and unavoidable impurities is heated to the temp. below 1,280 deg.C and is hot rolled. The hot rolled sheet is subjected to cold rolling to a final sheet thickness then to decarburization annealing. After the separating agent for annealing is coated on such steel sheet, the steel sheet is subjected to secondary recrystallization annealing while a temp. gradient of >=2.5 deg.C/cm is applied to the steel sheet in the boundary part between the primary recrystallization region and the secondary recrystallization region.
Author KONNO TOYOHIKO
YABUMOTO MASAO
USHIGAMI YOSHIYUKI
NAKAYAMA TADASHI
SUGA YOZO
NOZAWA TADAO
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– fullname: YABUMOTO MASAO
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Snippet PURPOSE:To produce a grain oriented silicon steel sheet having high magnetic flux density and low iron loss by heating a slab consisting of the specific...
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SubjectTerms 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
Title PRODUCTION OF GRAIN ORIENTED SILICON STEEL SHEET HAVING LOW IRON LOSS
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