JP5980216B2 - 方向性電磁平鋼製品上に絶縁コーティングを製造する方法及び該絶縁コーティングで被覆された電磁平鋼製品 - Google Patents
方向性電磁平鋼製品上に絶縁コーティングを製造する方法及び該絶縁コーティングで被覆された電磁平鋼製品 Download PDFInfo
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- C23C22/24—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 hexavalent chromium compounds
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- 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
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Description
電磁平鋼製品を用意する工程。
リン酸塩絶縁溶液の層を電磁平鋼製品の少なくとも1つの表面に塗布し、この塗布層を焼付けする工程。
〔試験V1〜V6〕
150gのリン酸モノアルミニウム(50%)
183gのコロイド状二酸化ケイ素(30%)
12gの三酸化クロム
〔試験V7、V8〕
150gのリン酸モノアルミニウム(50%)
183gのコロイド状二酸化ケイ素(30%)
2gの、活性物質としてジエチルチオ尿素を含む酸洗インヒビター
10gの、活性物質としてリン酸トリエチルを含むコロイド安定剤
〔試験V9、V10〕
150gのリン酸モノアルミニウム(50%)
183gのコロイド状二酸化ケイ素(30%)
2gの、活性物質としてジエチルチオ尿素を含む酸洗インヒビター
10gの、活性物質としてリン酸トリエチルを含むコロイド安定剤
36gの硝酸クロム(III)九水和物
試料を絶縁溶液で両面被覆した。その際、圧搾ローラーの対応する調整によって、表1に示した小さい層厚を設定した。
試料の片面を酸洗耐性フィルムでマスクした。この試料を水酸化ナトリウム(60%)内に60℃で10分間置いた。このようにして、未保護面上に前もって塗布及び焼付けしたリン酸塩絶縁コーティングを、真下のガラスフィルム/フォルステライトを攻撃せずに除去した。
工業生産では一般的なように、圧搾ローラーを試験V1より広く開け、絶縁溶液の塗布によって、いくらか大きいコーティング厚が設定されるようにした。
いずれの場合も塗布される絶縁溶液の層厚を大きくするため、コーティングシステムの圧搾ローラーを試験V1におけるより低い接触圧に設定した。
普通に製造されるより厚いコーティングが得られるようにコーティングシステムの圧搾ローラーを調整した。塗布直後にコーティングを窒素雰囲気内で840℃にて1分間焼付けした。
コーティングシステムの圧搾ローラーを試験V4よりさらに狭く調整した。塗布直後に得られた絶縁溶液の層を窒素雰囲気内で840℃にて1分間焼付けした。
圧搾ローラーを試験V5と同様に設定した。塗布直後にコーティングを窒素雰囲気内で300℃にて10秒間焼付けした。
Crを含まないが、コロイド安定剤を含有する絶縁溶液を用いて従来法で被覆された試料の特性を決定するため、圧搾ローラーを試験V2と同様に設定した。塗布直後にコーティングを窒素雰囲気下で840℃にて1分間焼付けし、単一コーティング後に得られた試料の、表1に示す特性を決定した。
圧搾ローラーを試験V5と同様に設定した。塗布直後にコーティングを窒素雰囲気下で840℃にて1分間焼付けした。
Cr及びコロイド安定剤を含有する絶縁溶液を用いて従来法で被覆された試料の特性を決定するため、圧搾ローラーを試験V2と同様に設定した。ここでも塗布直後に絶縁コーティングを窒素雰囲気下で840℃にて1分間焼付けした。このようにして作製された試料の特性は、同様に表1に与えてある。
圧搾ローラーを試験V5と同様に設定した。塗布直後にコーティングを窒素雰囲気下で840℃にて1分間焼付けした。
Claims (14)
- 磁気損失値が最小化された方向性電磁平鋼製品の製造方法であって、下記作業工程
a)電磁平鋼製品を用意する工程、
b)前記電磁平鋼製品の少なくとも1つの表面にリン酸塩絶縁溶液の層を塗布し、この塗布層を焼付けする工程
を含む方法において、
作業工程b)の最初の実行後にこの作業工程b)を少なくとも1回繰り返し、その結果、次々に、順に重ねて塗布及び焼付けされたリン酸塩絶縁溶液の層から絶縁コーティングを得ると伴に、
完成電磁平鋼製品上の前記リン酸塩絶縁コーティングが3μm以下の厚さDを有する場合には、このリン酸塩絶縁コーティングの固有コーティング密度rは≧5g/m2であるが、3μmを超える厚さDでは前記リン酸塩絶縁コーティングの固有コーティング密度rについて下式:
が当てはまること
を特徴とする方法。 - それぞれの作業工程b)で塗布される前記リン酸塩絶縁溶液がコロイド成分を含むことを特徴とする請求項1に記載の方法。
- 前記コロイド成分がコロイド状二酸化ケイ素であることを特徴とする請求項2に記載の方法。
- 前記絶縁溶液がリン酸アルミニウム及び/又はリン酸マグネシウムを含むことを特徴とする請求項1〜3のいずれか1項に記載の方法。
- 前記絶縁溶液が少なくとも1種の酸洗インヒビター及び少なくとも1種の湿潤剤を含むことを特徴とする請求項1〜4のいずれか1項に記載の方法。
- 前記絶縁溶液が添加剤として少なくとも1種のコロイド安定剤(A)を含むことを特徴とする請求項1〜5のいずれか1項に記載の方法。
- 作業工程b)の過程で行なわれる前記焼付け中に焼付け温度が少なくとも300℃であることを特徴とする請求項1〜6のいずれか1項に記載の方法。
- 作業工程b)の最後の繰り返しの過程で行なわれる焼付け中に焼付け温度が少なくとも700℃であることを特徴とする請求項1〜7のいずれか1項に記載の方法。
- 作業工程b)の過程で行なわれる焼付け中に焼付け温度がいずれの場合も最高900℃であることを特徴とする請求項1〜8のいずれか1項に記載の方法。
- 作業工程b)の前記繰り返し実行が処理ラインに従い、この処理ラインには、前記絶縁溶液を塗布及び焼付けするための、繰り返し数に対応するいくつかの装置が一列に次々に配置され、被覆すべき前記電磁平鋼製品がこれらの装置を連続プロセスで通過することを特徴とする請求項1〜9のいずれか1項に記載の方法。
- 鋼基板と前記リン酸塩絶縁コーティングとの間にフォルステライト層が存在することを特徴とする請求項12又は13のいずれか1項に記載の方向性電磁平鋼製品。
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DE102010038038.5 | 2010-10-07 | ||
DE102010038038A DE102010038038A1 (de) | 2010-10-07 | 2010-10-07 | Verfahren zum Erzeugen einer Isolationsbeschichtung auf einem kornorientierten Elektro-Stahlflachprodukt und mit einer solchen Isolationsbeschichtung beschichtetes Elektro-Stahlflachprodukt |
PCT/EP2011/066509 WO2012045593A1 (de) | 2010-10-07 | 2011-09-22 | Verfahren zum erzeugen einer isolationsbeschichtung auf einem kornorientierten elektro-stahlflachprodukt und mit einer solchen isolationsbeschichtung beschichtetes elektro-stahlflachprodukt |
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JP5980216B2 true JP5980216B2 (ja) | 2016-08-31 |
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US (1) | US20130251984A1 (ja) |
EP (1) | EP2625298A1 (ja) |
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KR (1) | KR101896046B1 (ja) |
CN (1) | CN103221556B (ja) |
BR (1) | BR112013008376A2 (ja) |
DE (1) | DE102010038038A1 (ja) |
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IN2014CN04062A (ja) | 2011-11-04 | 2015-09-04 | Tata Steel Uk Ltd | |
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2010
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CN103221556B (zh) | 2015-06-24 |
US20130251984A1 (en) | 2013-09-26 |
BR112013008376A2 (pt) | 2016-06-14 |
DE102010038038A1 (de) | 2012-04-12 |
KR20130117789A (ko) | 2013-10-28 |
RU2013120538A (ru) | 2014-11-20 |
EP2625298A1 (de) | 2013-08-14 |
CN103221556A (zh) | 2013-07-24 |
KR101896046B1 (ko) | 2018-09-06 |
RU2580778C2 (ru) | 2016-04-10 |
JP2013542323A (ja) | 2013-11-21 |
WO2012045593A1 (de) | 2012-04-12 |
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