JP2009299183A - 錫めっき鋼板の製造方法および錫めっき鋼板ならびに化成処理液 - Google Patents
錫めっき鋼板の製造方法および錫めっき鋼板ならびに化成処理液 Download PDFInfo
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Abstract
【解決手段】鋼板の少なくとも片面に、Snの付着量が片面あたり0.05〜20g/m2となるようにSnを含むめっき層を形成した後、第1りん酸アルミニウムを18g/L超200g/L以下含み、pHが1.5〜2.4である化成処理液中で浸漬処理を施し、あるいは該化成処理液中で電流密度10A/dm2以下で陰極電解処理を施し、次いで乾燥を行って化成処理皮膜を形成することを特徴とする錫めっき鋼板の製造方法。
【選択図】なし
Description
まず、低炭素鋼や極低炭素鋼などを用いた一般的な缶用の冷延鋼板の少なくとも片面に、Sn層からなるめっき層(以下、Sn層と記す。)、Fe-Sn層にSn層を積層した2層構造のめっき層(以下、Fe-Sn層/Sn層と記す。)、Fe-Sn-Ni層にSn層を積層した2層構造のめっき層(以下、Fe-Sn-Ni層/Sn層と記す。)、Fe-Ni層にFe-Sn-Ni層とSn層を順次積層した3層構造のめっき層(以下、Fe-Ni層/Fe-Sn-Ni層/Sn層と記す。)などのSnを含むめっき層を形成する。
次に、上記したSnを含むめっき層の上に、第1りん酸アルミニウムを18g/L超200g/L以下含み、pHが1.5〜2.4である化成処理液中で浸漬処理を施し、あるいはこの化成処理液中で電流密度10A/dm2以下で陰極電解処理を施し、次いで乾燥を行って化成処理皮膜を形成する。このとき、乾燥の前に水洗を行ってもよい。
鋼板A:板厚0.2mmの低炭素冷延鋼板
鋼板B:板厚0.2mmの低炭素冷延鋼板の両面に、ワット浴を用いて片面当り100mg/m2の付着量でニッケルめっき層を形成後、10vol.%H2+90%vol.%N2雰囲気中で700℃で焼鈍してニッケルめっきを拡散浸透させた鋼板
を使用し、市販の錫めっき浴を用い、表2に示す片面当りのSnの付着量でSn層を形成後、Snの融点以上でリフロー処理を施し、鋼板AにはFe-Sn層/Sn層のSnを含むめっき層を、また、鋼板BにはFe-Ni層/Fe-Ni-Sn層/Sn層のSnを含むめっき層を形成した。次に、リフロー処理後に表面に生成したSnの酸化膜を除去するため、浴温50℃、10g/Lの炭酸ナトリウム水溶液中で1A/dm2の陰極電解処理を施した。その後、水洗し、表1に示す第1りん酸アルミニウムの量、pHおよび温度の化成処理液を用い、表1に示す電流密度と電解時間で陰極電解処理を施した後、水洗し、リンガーロールで絞り、一般的なブロアを用いて室温で乾燥して化成処理皮膜を形成し、錫めっき鋼板の試料No.1〜25を作製した。このとき、試料No.13では、陰極電解処理の代わりに、表1に示す化成処理液中で1秒浸漬処理を施して化成処理皮膜を形成した。また、試料No.12では、最後の乾燥を、ブロアを用いず、鋼板が70℃となる熱風乾燥で行った。なお、表1に示す化成処理液のpHは、オルトりん酸を添加して調整した。
作製直後の外観:作製直後の錫めっき鋼板の外観を目視観察して次のように評価し、○または◎であれば外観が良好であるとした。
◎: 表面に粉状の析出物が存在せず、金属光沢が保たれた美麗な外観
○: 表面に粉状の析出物が存在せず、若干白味がかっているものの、美麗な外観
△: 表面に局所的に粉状析出物が存在している、やや白味がかった不均一な外観
×: 表面に多量の粉状析出物が存在する、白味がかった外観
長期保管後のSnの酸化膜量と外観:錫めっき鋼板を60℃、相対湿度70%の環境下で10日間保管し、外観を目視観察するとともに、表面に形成されたSnの酸化膜量を、1/1000NのHBr溶液の電解液中で電流密度25μA/cm2で電解し、電気化学的還元に要した電気量を求めて次のように評価し、○または◎であれば長期保管後のSnの酸化膜量が少なく、外観も良好であるとした。
◎: 還元電気量2mC/cm2未満、外観優(クロメート処理材より良好)
○: 還元電気量2mC/cm2以上3mC/cm2未満、外観良(クロメート処理材同等)
△: 還元電気量3mC/cm2以上5mC/cm2未満、外観やや黄色み
×: 還元電気量5mC/cm2以上、外観はっきりとわかる黄色み
塗料密着性:作製直後の錫めっき鋼板に、付着量50mg/dm2となるようにエポキシフェノール系塗料を塗布後、210℃で10分間の焼付を行った。次いで、塗布・焼付を行った2枚の錫めっき鋼板を、塗装面がナイロン接着フィルムを挟んで向かい合わせになるように積層し、圧力2.94×105Pa、温度190℃、圧着時間30秒間の圧着条件下で貼り合わせた後、これを5mm幅の試験片に分割し、この試験片を引張試験機を用いて引き剥がし、強度測定を行って次のように評価し、○または◎であれば塗料密着性が良好であるとした。また、錫めっき鋼板を室温環境で6ヶ月間保管後にも同様の塗料密着性の評価を行った。
◎: 19.6N(2kgf)以上(溶接缶用クロメート処理材同等)
○: 3.92N(0.4kgf)以上19.6N未満(クロメート処理材同等)
△: 1.96N(0.2kgf)以上3.92N未満
×: 1.96N(0.2kgf)未満
耐食性:錫めっき鋼板に、付着量50mg/dm2となるようにエポキシフェノール系塗料を塗布した後、210℃で10分間の焼付を行った。次いで、市販のトマトジュースに60℃で10日間浸漬し、塗膜の剥離、錆の発生の有無を目視で評価し、○または◎であれば耐食性が良好であるとした。
◎: 塗膜剥離、錆の発生なし
○: 塗膜剥離なし、ごくわずか点状の錆の発生(クロメート処理材同等)
△: 塗膜剥離なし、微小な錆の発生
×: 塗膜剥離あり、錆発生あり
結果を表2に示す。本発明の製造方法で製造された錫めっき鋼板No.1〜18では、いずれも製造直後および長期保管後の外観が良好であり、長期保管後のSnの酸化膜量も少なく、塗料密着性および耐食性に優れていることがわかる。
Claims (7)
- 鋼板の少なくとも片面に、Snの付着量が片面あたり0.05〜20g/m2となるようにSnを含むめっき層を形成した後、第1りん酸アルミニウムを18g/L超200g/L以下含み、pHが1.5〜2.4である化成処理液中で浸漬処理を施し、あるいは該化成処理液中で電流密度10A/dm2以下で陰極電解処理を施し、次いで乾燥を行って化成処理皮膜を形成することを特徴とする錫めっき鋼板の製造方法。
- Snを含むめっき層として、Sn層からなるめっき層、Fe-Sn層とSn層が順次積層されためっき層、のいずれかのめっき層を形成することを特徴とする請求項1に記載の錫めっき鋼板の製造方法。
- 乾燥を60℃未満の温度で行うことを特徴とする請求項1または2に記載の錫めっき鋼板の製造方法。
- 化成処理液の温度を70℃以上として陰極電解処理を施すことを特徴とする請求項1〜3のいずれか1項に記載の錫めっき鋼板の製造方法。
- 請求項1〜4のいずれか1項に記載の錫めっき鋼板の製造方法により製造された錫めっき鋼板。
- 化成処理皮膜の付着量がP換算で片面当り1.5〜10mg/m2で、前記化成処理皮膜中のAlとPの質量比(Al/P)が0.20〜0.87であることを特徴とする請求項5に記載の錫めっき鋼板。
- 第1りん酸アルミニウムを18g/L超200g/L以下含み、pHが1.5〜2.4である化成処理液。
Priority Applications (11)
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JP2009103900A JP5633117B2 (ja) | 2008-05-12 | 2009-04-22 | 錫めっき鋼板の製造方法および錫めっき鋼板ならびに化成処理液 |
MX2010011889A MX353528B (es) | 2008-05-12 | 2009-05-11 | Procedimiento para la produccion de laminas de acero revestidas con estaño, laminas de acero revestidas con estaño y fluido de tratamiento de conversion quimica. |
PCT/JP2009/059101 WO2009139480A1 (ja) | 2008-05-12 | 2009-05-11 | 錫めっき鋼板の製造方法および錫めっき鋼板ならびに化成処理液 |
CA2721979A CA2721979A1 (en) | 2008-05-12 | 2009-05-11 | Method for producing tinned steel sheet, tinned steel sheet, and chemical conversion solution |
KR1020107025049A KR101318545B1 (ko) | 2008-05-12 | 2009-05-11 | 주석 도금 강판의 제조 방법 및 주석 도금 강판 그리고 화성 처리액 |
EP09746686A EP2290129A4 (en) | 2008-05-12 | 2009-05-11 | PROCESS FOR THE PRODUCTION OF TIN PLATED STEEL SHEETS, TIN PLATED STEEL SHEETS, AND CHEMICAL CONVERSION TREATMENT FLUID |
TW098115512A TWI477662B (zh) | 2008-05-12 | 2009-05-11 | 鍍錫鋼板之製造方法及鍍錫鋼板暨化學轉化處理液 |
CN2009801172591A CN102027158A (zh) | 2008-05-12 | 2009-05-11 | 镀锡钢板及其制造方法以及化学转化处理液 |
MYPI2010005010A MY155420A (en) | 2008-05-12 | 2009-05-11 | Method for producing tinned steel sheet, tinned steel sheet, and chemical conversion solution |
US12/990,839 US20110091741A1 (en) | 2008-05-12 | 2009-05-11 | Method for producing tinned steel sheet, tinned steel sheet, and chemical conversion solution |
US14/086,350 US20140079886A1 (en) | 2008-05-12 | 2013-11-21 | Method of producing tinned steel sheets |
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US (2) | US20110091741A1 (ja) |
EP (1) | EP2290129A4 (ja) |
JP (1) | JP5633117B2 (ja) |
KR (1) | KR101318545B1 (ja) |
CN (1) | CN102027158A (ja) |
CA (1) | CA2721979A1 (ja) |
MX (1) | MX353528B (ja) |
MY (1) | MY155420A (ja) |
TW (1) | TWI477662B (ja) |
WO (1) | WO2009139480A1 (ja) |
Cited By (1)
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JP2011246755A (ja) * | 2010-05-26 | 2011-12-08 | Nippon Steel Corp | 錫めっき鋼板の製造方法 |
Families Citing this family (6)
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KR101109799B1 (ko) | 2011-07-19 | 2012-02-24 | 최진영 | 도금 방법 |
JP6220226B2 (ja) | 2013-10-31 | 2017-10-25 | 東洋鋼鈑株式会社 | 表面処理鋼板の製造方法、表面処理鋼板、および有機樹脂被覆金属容器 |
JP5910700B2 (ja) * | 2014-01-24 | 2016-04-27 | Jfeスチール株式会社 | 容器用鋼板およびその製造方法 |
ES2730760T3 (es) | 2014-10-09 | 2019-11-12 | Nippon Steel Corp | Chapa de acero tratada mediante conversión química y método para producirla |
EP3434811A4 (en) * | 2016-03-22 | 2019-11-27 | Nippon Steel Corporation | STEEL PLATE EQUIPPED WITH CHEMICAL CONVERSION COATING AND METHOD FOR PRODUCING A STEEL PLATE WITH A CHEMICAL CONVERSION COATING |
CN110938852B (zh) * | 2018-09-24 | 2023-12-12 | 特诺恩股份公司 | 镀锡钢板的钝化工艺 |
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- 2009-05-11 WO PCT/JP2009/059101 patent/WO2009139480A1/ja active Application Filing
- 2009-05-11 CN CN2009801172591A patent/CN102027158A/zh active Pending
- 2009-05-11 KR KR1020107025049A patent/KR101318545B1/ko active IP Right Grant
- 2009-05-11 EP EP09746686A patent/EP2290129A4/en not_active Withdrawn
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JP2011246755A (ja) * | 2010-05-26 | 2011-12-08 | Nippon Steel Corp | 錫めっき鋼板の製造方法 |
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Publication number | Publication date |
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CA2721979A1 (en) | 2009-11-19 |
CN102027158A (zh) | 2011-04-20 |
US20110091741A1 (en) | 2011-04-21 |
EP2290129A4 (en) | 2013-02-20 |
KR20100124351A (ko) | 2010-11-26 |
MY155420A (en) | 2015-10-15 |
US20140079886A1 (en) | 2014-03-20 |
MX2010011889A (es) | 2011-01-25 |
EP2290129A1 (en) | 2011-03-02 |
TWI477662B (zh) | 2015-03-21 |
WO2009139480A1 (ja) | 2009-11-19 |
TW201002871A (en) | 2010-01-16 |
KR101318545B1 (ko) | 2013-10-16 |
MX353528B (es) | 2018-01-18 |
JP5633117B2 (ja) | 2014-12-03 |
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