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Title:
ELECTROMAGNETIC STEEL SHEET WITH SEMI-ORGANIC INSULATING COATING FILM
Document Type and Number:
WIPO Patent Application WO/2012/011286
Kind Code:
A1
Abstract:
Provided is an electromagnetic steel sheet with a semi-organic insulating coating film in which a semi-organic insulating coating film formed from inorganic components and an organic resin comprises, as the inorganic components, a Zr compound and an Si compound, which contains plate-like silica, at a percentage in the dry coating film of 20 to 70 mass% of the Zr compound (in terms of ZrO2) and 10 to 50 mass% of the Si compound (in terms of SiO2), with the balance being substantially the organic resin. As a result, the electromagnetic steel sheet with a semi-organic insulating coating film has excellent powdering resistance, scratch resistance, stickability, Tig weldability, punchability, and coating film appearance while no deterioration of corrosion resistance or water resistance is shown in spite of being chromium compound-free.

Inventors:
SASHI, Kazumichi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
佐志 一道 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
OGATA, Hiroyuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
尾形 浩行 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
TADA, Chiyoko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
多田 千代子 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
NAKAGAWA, Nobuko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
Application Number:
JP2011/004123
Publication Date:
January 26, 2012
Filing Date:
July 21, 2011
Export Citation:
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Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目2番3号 Tokyo, 〒1000011, JP)
SASHI, Kazumichi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
佐志 一道 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
OGATA, Hiroyuki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
尾形 浩行 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
TADA, Chiyoko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
多田 千代子 (〒11 東京都千代田区内幸町二丁目2番3号 JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
International Classes:
C23C22/00; B32B15/08; C22C38/00; H01F1/18
Foreign References:
JP2005268630A2005-09-29
JP2003253462A2003-09-10
JP2003268563A2003-09-25
JP2009194314A2009-08-27
JP6036476B
JPH10130858A1998-05-19
JPH1046350A1998-02-17
JP2944849B21999-09-06
JP2007197820A2007-08-09
JP2007197824A2007-08-09
Attorney, Agent or Firm:
SUGIMURA, Kenji (36F Kasumigaseki Common Gate West, 3-2-1 Kasumigaseki, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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Claims: