Title:
絶縁被膜付き電磁鋼板
Document Type and Number:
Japanese Patent JP7060160
Kind Code:
B2
Abstract:
To provide an electrical steel sheet with an insulating coating that is excellent in adhesion strength to an anaerobic acrylic adhesive, corrosion resistance, and tension pad resistance. Disclosed is an electrical steel sheet with an insulating coating formed by applying a surface-treatment agent to at least one surface of the electrical steel sheet and drying the surface-treatment agent, wherein the surface-treatment agent contains: certain trialkoxysilane and/or dialkoxysilane (A); a silane coupling agent (B) that does not contain a polymerizable unsaturated group in its structure; plate-like silica (C); a polymerizable unsaturated-group-containing compound (D); and water, within a range satisfying the following conditions (1) to (3): (1) a mass ratio (A/B) of (A) to (B) is from 0.05 to 1.00; (2) a content of (C) is 2 mass% to 30 mass% with respect to a total mass of (A) to (D) in the surface-treatment agent; and (3) a content of (D) is 2 mass% to 18 mass% with respect to the total mass of (A) to (D) in the surface-treatment agent.
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Inventors:
Nobuko Nakagawa
Chiyoko Tada
Naoki Muramatsu
Chiyoko Tada
Naoki Muramatsu
Application Number:
JP2021510999A
Publication Date:
April 26, 2022
Filing Date:
October 13, 2020
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C23C22/00; C21D9/46; H01F1/147
Domestic Patent References:
| JP2017186542A | ||||
| JP2014025139A |
Foreign References:
| WO2013031200A1 | ||||
| US20100015339 |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Keisuke Kawahara
Mitsutsugu Sugimura
Keisuke Kawahara
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