GRAIN ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD OF SAME

A method for manufacturing a grain oriented electrical steel sheet according to an exemplary embodiment of the present invention includes manufacturing a hot-rolled steel sheet by hot rolling a slab; subjecting the hot-rolled steel sheet to hot-rolled steel sheet annealing; subjecting the hot-rolled...

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Bibliographische Detailangaben
Hauptverfasser:	HAN, Minsoo, SEO, Jin-Wook, KO, Hyun-Seok
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A method for manufacturing a grain oriented electrical steel sheet according to an exemplary embodiment of the present invention includes manufacturing a hot-rolled steel sheet by hot rolling a slab; subjecting the hot-rolled steel sheet to hot-rolled steel sheet annealing; subjecting the hot-rolled steel sheet annealed hot-rolled steel sheet to primary cold rolling; subjecting the primarily cold-rolled steel sheet to primary decarburization annealing; subjecting the decarburization-annealed steel sheet to secondary cold rolling; subjecting the secondarily cold-rolled steel sheet to secondary decarburization annealing; subjecting the secondarily decarburization-annealed steel sheet to primary non-oxidizing annealing of annealing the steel sheet at a temperature ranging from 1000°C to 1200°C and a dew point temperature of -20°C or lower; subjecting the primarily non-oxidizing annealed steel sheet to tertiary cold rolling; and subjecting the tertiarily cold-rolled steel sheet to secondary non-oxidizing annealing of annealing the steel sheet at a soaking temperature ranging from 800°C to 1000°C for 30 seconds to 5 minutes.