Anisotropic electromagnetic steel sheet and method for producing same

Provided is an anisotropic electromagnetic steel sheet comprising, by mass%, 0.005% or less of C, 0.1% to 2.0% of Si, 0.05 to 0.6% of Mn, 0.100% or less of P, and 0.5% or less of Al, wherein the content of nonmagnetic precipitate AlN having an average diameter of 10 to 200 nm is, by number density,1...

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Main Authors FUJIKURA MASAHIRO, ATAKE MAKOTO, USHIGAMI YOSHIYUKI, KANAO SHINICHI, HORI KOJIRO, ICHIE TAKERU, MURAKAWA TESSHU
Format Patent
LanguageChinese
English
Published 16.07.2014
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
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Summary:Provided is an anisotropic electromagnetic steel sheet comprising, by mass%, 0.005% or less of C, 0.1% to 2.0% of Si, 0.05 to 0.6% of Mn, 0.100% or less of P, and 0.5% or less of Al, wherein the content of nonmagnetic precipitate AlN having an average diameter of 10 to 200 nm is, by number density,10 precipitates/[mu]m or less, and the average flux density in the rolling direction and the direction perpendicular to rolling is 1.75 T or greater. This anisotropic electromagnetic steel sheet can be produced by two methods, the method of hot rolling and annealing at a temperature between 750 DEG C and the Ac1 transformation temperature and the method of self-annealing at a coil take-up temperature of 780 DEG C or greater.
Bibliography:Application Number: CN201280055225