JP5422937B2 - 方向性電磁鋼板に用いる絶縁皮膜塗布液及び絶縁皮膜形成方法 - Google Patents
方向性電磁鋼板に用いる絶縁皮膜塗布液及び絶縁皮膜形成方法 Download PDFInfo
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- JP5422937B2 JP5422937B2 JP2008202352A JP2008202352A JP5422937B2 JP 5422937 B2 JP5422937 B2 JP 5422937B2 JP 2008202352 A JP2008202352 A JP 2008202352A JP 2008202352 A JP2008202352 A JP 2008202352A JP 5422937 B2 JP5422937 B2 JP 5422937B2
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- insulating film
- weight
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- electrical steel
- oriented electrical
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Description
仕上げ焼鈍済の板厚0.23mmの方向性電磁鋼板に対し、表1に示す組成の塗布液を焼き付け後の皮膜量が5g/m2となるよう塗布乾燥し、850℃、30秒間の焼き付け処理をおこなった。得られた絶縁皮膜付の方向性電磁鋼板に対し、皮膜特性及び磁気特性を評価し、表2の結果を得た。
Claims (4)
- 固形分量100重量部のコロイダルシリカに対し、Al、Mg、Ca、Zn、Niの燐酸塩のいずれか1種の第一燐酸塩水溶液の1種または2種以上を固形分換算で50〜250重量部、カオリン、蛇紋石、タルク、パイロフィライトの1種または2種以上の含水珪酸塩微粉末を第一燐酸塩水溶液固形分量100重量部に対し2〜50重量部配合することを特徴とする、焼き付け後の耐熱性が良好な方向性電磁鋼板用絶縁皮膜を形成するための塗布液。
- 前記含水珪酸塩微粉末の平均粒径が5μm以下であることを特徴とする請求項1に記載の焼き付け後の耐熱性が良好な方向性電磁鋼板用絶縁皮膜を形成するための塗布液。
- 最終仕上げ焼鈍後の方向性電磁鋼板に対し、固形分量100重量部のコロイダルシリカに対し、Al、Mg、Ca、Zn、Niの燐酸塩のいずれか1種の第一燐酸塩水溶液の1種または2種以上を固形分換算で50〜250重量部、カオリン、蛇紋石、タルク、パイロフィライトの1種または2種以上の含水珪酸塩微粉末を第一燐酸塩水溶液固形分量100重量部に対し2〜50重量部配合した塗布液を、600℃以上、1000℃以下で焼き付けることを特徴とする耐熱性が優れる絶縁皮膜を有する方向性電磁鋼板の製造方法。
- 前記含水珪酸塩微粉末の平均粒径が5μm以下であることを特徴とする請求項3に記載の耐熱性が優れる絶縁皮膜を有する方向性電磁鋼板の製造方法。
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JP2008202352A JP5422937B2 (ja) | 2008-08-05 | 2008-08-05 | 方向性電磁鋼板に用いる絶縁皮膜塗布液及び絶縁皮膜形成方法 |
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JP2008202352A JP5422937B2 (ja) | 2008-08-05 | 2008-08-05 | 方向性電磁鋼板に用いる絶縁皮膜塗布液及び絶縁皮膜形成方法 |
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JP2010037602A JP2010037602A (ja) | 2010-02-18 |
JP5422937B2 true JP5422937B2 (ja) | 2014-02-19 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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KR102240346B1 (ko) * | 2013-02-08 | 2021-04-14 | 닛폰세이테츠 가부시키가이샤 | 절연 코팅을 형성하기 위한 용액 및 방향성 전기 강 시트 |
KR101904308B1 (ko) * | 2016-12-22 | 2018-10-04 | 주식회사 포스코 | 방향성 전기강판용 절연피막 조성물 및 이를 이용한 절연피막 형성방법, 방향성 전기강판 및 방향성 전기강판의 제조 방법 |
US11499055B2 (en) | 2017-11-13 | 2022-11-15 | Nippon Steel Corporation | Coating solution for forming insulating film for grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet |
CN111868303B (zh) | 2018-03-28 | 2023-04-14 | 日本制铁株式会社 | 方向性电磁钢板的制造方法及方向性电磁钢板 |
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GB1537824A (en) * | 1975-01-30 | 1979-01-10 | British Steel Corp | Electrically insulating coatings |
SE402470B (sv) * | 1976-10-29 | 1978-07-03 | Asea Ab | Sett att behandla ett med en isolerande skyddsbeleggning av silikat forsett foremal av kiselhaltigt stal |
US4498936A (en) * | 1984-05-21 | 1985-02-12 | Armco Inc. | Insulative coating composition for electrical steels |
JPS61183480A (ja) * | 1985-02-09 | 1986-08-16 | Sumitomo Metal Ind Ltd | 電磁鋼板に絶縁皮膜を形成する方法 |
JP4878788B2 (ja) * | 2005-07-14 | 2012-02-15 | 新日本製鐵株式会社 | クロムを含有しない電磁鋼板用絶縁被膜剤 |
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