Multilayer electrical steel sheet

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11401589
APP PUB NO 20200308676A1
SERIAL NO

16770617

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided is a multilayer electrical steel sheet having both low high-frequency iron loss and high magnetic flux density. The multilayer electrical steel sheet has an inner layer and surface layers provided on both sides of the inner layer, in which the surface layers and the inner layer have a predetermined chemical composition, the multilayer electrical steel sheet having: ΔSi of 0.5 mass % to 4.0 mass %; ΔAl of 0.05 mass % or less; a ratio of t1 to t represented by t1/t of from 0.10 to 0.70; a magnetic flux density B10 of 1.3 T or more; and a ratio of B1 to B10 represented by B1/B10 of 0.45 or more; and an iron loss W10/1k in W/kg and the sheet thickness t in mm satisfy the following formula (1):

description='In-line Formulae' end='lead'W10/1k≤15+140×t  (1).description='In-line Formulae' end='tail'

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Patent Owner(s)

  • JFE STEEL CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hiratani, Tatsuhiko Tokyo, JP 28 73
Oda, Yoshihiko Tokyo, JP 70 248
Zaizen, Yoshiaki Tokyo, JP 45 129

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