Title:
方向性電磁鋼板、及び、その製造方法
Document Type and Number:
Japanese Patent JP6801412
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a grain oriented silicon steel sheet excellent in cutting processability and slipperiness, and a method for manufacturing the same.SOLUTION: A grain oriented silicon steel sheet comprises a steel sheet including Si of 0.8 mass% or more and 7.0 mass% or less and a tension coating on both surfaces of the steel sheet. The oxygen concentration in the steel sheet is 500 ppm or more and 2200 ppm or less in terms of a plate thickness of 0.22 mm; the line roughness of outline curve of the grain oriented silicon steel sheet is 0.8 μm or more and 1.5 μm or less in an arithmetic average roughness (Ra); and a difference (a cut-level difference:Rδc) between the average height of the outline curve and a cut level having a load length ratio of 10% is 2.0 μm or less.SELECTED DRAWING: Figure 1
Inventors:
Fumiaki Takahashi
Application Number:
JP2016236655A
Publication Date:
December 16, 2020
Filing Date:
December 06, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22C38/00; C21D8/12; C21D9/46; C22C38/02; H01F1/147
Domestic Patent References:
| JP2001026847A | ||||
| JP6158340A | ||||
| JP3207868A | ||||
| JP9049027A | ||||
| JP9031546A | ||||
| JP2005281737A | ||||
| JP61124584A |
Foreign References:
| EP0709470A1 | ||||
| US5114501 |
Attorney, Agent or Firm:
Kishimoto Tatsuto
Akihiko Yamashita
Noriyuki Yamamoto
Akihiko Yamashita
Noriyuki Yamamoto