Title:
無方向性電磁鋼板およびその製造方法
Document Type and Number:
Japanese Patent JP7334673
Kind Code:
B2
Abstract:
To provide a non-oriented electromagnetic steel sheet having a low high frequency iron loss.SOLUTION: The non-oriented electromagnetic steel sheet has a Si content distribution having a Si content continuously reducing from the surface toward the center of a sheet thickness t of 0.01-0.35 mm. The average N content [N] of the total sheet thickness is 0.0020 mass% or less; the average Si content [Si]1 in a surface layer part 20 defined as a region having a Si content equal to or more than the average Si content of the total sheet thickness is 2.5-7.0 mass%; the average Si content [Si]0 in an inner layer part 10 defined as a region having a Si content less than the average Si content of the total sheet thickness is 1.5-5.0 mass%; a bilayer ratio t1/t defined as the ratio of the total thickness t1 of the surface layer part to the sheet thickness t is 0.10-0.70; and ΔSi defined as a difference ([Si]1-[Si]0) between the average Si content [Si]1 in the surface layer part and the average Si content [Si]0 in the inner layer part is 0.5-4.0 mass%.SELECTED DRAWING: Figure 1
Inventors:
Yukino Miyamoto
Yoshiaki Zaizen
Yoshihiko Oda
Yoshiaki Zaizen
Yoshihiko Oda
Application Number:
JP2020084029A
Publication Date:
August 29, 2023
Filing Date:
May 12, 2020
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
C21D8/12; C23C10/08; C22C38/00; C22C38/02; C22C38/60; H01F1/147
Domestic Patent References:
| JP62227036A | ||||
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Foreign References:
| WO2017170749A1 | ||||
| WO2017047049A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Keisuke Kawahara
Nobuyuki Ichieda
Keisuke Kawahara
Nobuyuki Ichieda