Non-oriented magnetic steel sheet and method for producing the same

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United States of America Patent

PATENT NO 9051622
APP PUB NO 20120009436A1
SERIAL NO

13256166

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A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1<(XsMn,V−XcMn,V)/tMn,V<100, where XsMn,V: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a surface of the steel sheet, XcMn,V: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a center of the steel sheet, and tMn,V: a depth (mm), from the surface of the steel sheet, of a position where the sum of the Mn concentration (mass %) and the V concentration (mass %) is equal to XcMn,V.

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATIONTOKYO JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Satoshi Tokyo, JP 235 3219
Ishizuka, Kiyokazu Tokyo, JP 38 69
Morimoto, Yasuhide Tokyo, JP 10 175
Takeda, Kazutoshi Tokyo, JP 125 341

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