NON-ORIENTED MAGNETIC STEEL SHEET, AND MANUFACTURING METHOD FOR SAME

WIPO Patent Application WO/2016/002904

A1

　This non-oriented magnetic steel sheet has a prescribed chemical composition including, in mass%, Si: 3.0-3.6%; Al: 0.50-1.25%; Mn: 0.5-1.5%; Sb and/or Sn: [Sb]+[Sn]/2 is 0.0025-0.05%, where the Sb content is represented by [Sb] and the Sn content is represented by [Sn]; P: 0.010-0.150%; Ni: 0.010-0.200%; and C: 0.0010-0.0040%. The non-oriented magnetic steel sheet has a thickness of 0.15-0.30mm. The non-oriented magnetic steel sheet has magnetic properties such that, when the thickness of the non-oriented magnetic steel sheet is represented by t(mm), the magnetic flux density B50 is at least [0.2×t+1.52]T, the magnetic flux density difference ΔB50 is at most 0.08T, the iron loss W10/50 is at most 0.95W/kg, and the iron loss W10/400 is at most [20×t+7.5]W/kg. The ratio of the number of intragranular carbides precipitated in the crystal grains relative to the total number of the intragranular carbides and grain boundary carbides precipitated at the crystal grain boundaries is at most 0.50.

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MURAKAMI KENICHI (JP)
NATORI YOSHIAKI (JP)
MATSUMOTO TAKUYA (JP)
HORI HIROKI (JP)
WAKISAKA TAKEAKI (JP)

PCT/JP2015/069197

January 07, 2016

July 02, 2015

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NIPPON STEEL & SUMITOMO METAL CORP (JP)

C22C38/00; C21D8/12; C22C38/60; H01F1/16

WO2013146879A1

2013-10-03

JP2008127600A	2008-06-05
CN102367547A	2012-03-07

See also references of EP 3165624A4

KOKUBUN, Takayoshi (JP)
Takayoshi Kokubu (JP)

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