JP5962168B2 - 外観性に優れた高潤滑溶融亜鉛めっき鋼板の製造方法 - Google Patents
外観性に優れた高潤滑溶融亜鉛めっき鋼板の製造方法 Download PDFInfo
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- JP5962168B2 JP5962168B2 JP2012096528A JP2012096528A JP5962168B2 JP 5962168 B2 JP5962168 B2 JP 5962168B2 JP 2012096528 A JP2012096528 A JP 2012096528A JP 2012096528 A JP2012096528 A JP 2012096528A JP 5962168 B2 JP5962168 B2 JP 5962168B2
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- steel sheet
- galvanized steel
- dip galvanized
- hot
- drying
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- 229910001335 Galvanized steel Inorganic materials 0.000 title claims description 37
- 239000008397 galvanized steel Substances 0.000 title claims description 37
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000005461 lubrication Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 238000001035 drying Methods 0.000 claims description 24
- 238000002845 discoloration Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
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- Coating With Molten Metal (AREA)
- Chemical Treatment Of Metals (AREA)
Description
しかしながら、所定時間放置し、洗浄、乾燥工程終了後に、鋼板表面に微量な水分が残留していると酸化膜の酸化がさらに進行して表面が変色する問題がある。
本発明の要旨は以下のとおりである。
溶融亜鉛めっき鋼板表面に酸性処理液を塗布し、所定時間放置した後、洗浄、乾燥を経て、前記溶融亜鉛めっき鋼板表面に酸化膜を形成させる溶融亜鉛めっき鋼板の製造方法において、前記洗浄、乾燥終了後、前記溶融亜鉛めっき鋼板表面の水膜厚もしくは水分量を測定し、次いで、前記水膜厚が5μm以下もしくは水分量が5g/m2以下となるように乾燥を行うことを特徴とする外観性に優れた溶融亜鉛めっき鋼板の製造方法。
さらに、変色発生前に異常を検知することが可能となり、大量の品質不良発生の予防につながる。
本発明は、溶融亜鉛めっき鋼板表面に酸性処理液を塗布し、所定時間放置した後、洗浄、乾燥を経て、溶融亜鉛めっき鋼板表面に酸化膜を形成させる高潤滑溶融亜鉛めっき鋼板の製造方法である。そして、洗浄、乾燥工程終了後、溶融亜鉛めっき鋼板表面の水膜厚もしくは水分量を測定し、次いで、前記水膜厚もしくは水分量が所定値以下となるように乾燥を行うことを特徴とする。
2 洗浄・乾燥装置
3 水分検出器
4 乾燥設備
Claims (1)
- 溶融亜鉛めっき鋼板表面に酸性処理液を塗布し、所定時間放置した後、洗浄、乾燥を経て、前記溶融亜鉛めっき鋼板表面に酸化膜を形成させる溶融亜鉛めっき鋼板の製造方法において、
前記洗浄、乾燥終了後、前記溶融亜鉛めっき鋼板表面の水膜厚もしくは水分量を測定し、次いで、前記水膜厚が5μm以下もしくは水分量が5g/m2以下となるように乾燥を行うことを特徴とする表面酸化膜の変色を防止した溶融亜鉛めっき鋼板の製造方法。
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JP2012096528A JP5962168B2 (ja) | 2012-04-20 | 2012-04-20 | 外観性に優れた高潤滑溶融亜鉛めっき鋼板の製造方法 |
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JP2012096528A JP5962168B2 (ja) | 2012-04-20 | 2012-04-20 | 外観性に優れた高潤滑溶融亜鉛めっき鋼板の製造方法 |
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JP2013224459A JP2013224459A (ja) | 2013-10-31 |
JP5962168B2 true JP5962168B2 (ja) | 2016-08-03 |
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JP2012096528A Active JP5962168B2 (ja) | 2012-04-20 | 2012-04-20 | 外観性に優れた高潤滑溶融亜鉛めっき鋼板の製造方法 |
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Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08193276A (ja) * | 1994-11-14 | 1996-07-30 | Kawasaki Steel Corp | 鋼帯の乾燥方法 |
JP2003231959A (ja) * | 2002-02-13 | 2003-08-19 | Jfe Steel Kk | 合金化溶融亜鉛めっき鋼板の製造設備 |
JP2006255687A (ja) * | 2005-02-15 | 2006-09-28 | Jfe Steel Kk | 表面処理物の製造方法 |
JP4692120B2 (ja) * | 2005-07-19 | 2011-06-01 | Jfeスチール株式会社 | 合金化溶融亜鉛めっき鋼板の製造方法 |
JP5211642B2 (ja) * | 2007-10-31 | 2013-06-12 | Jfeスチール株式会社 | 溶融亜鉛めっき鋼板の製造設備及び溶融亜鉛めっき鋼板の製造方法 |
JP5354165B2 (ja) * | 2008-01-30 | 2013-11-27 | Jfeスチール株式会社 | 亜鉛系めっき鋼板の製造方法 |
JP5338243B2 (ja) * | 2008-10-10 | 2013-11-13 | Jfeスチール株式会社 | 熱間プレス成形用めっき鋼板およびその製造方法 |
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- 2012-04-20 JP JP2012096528A patent/JP5962168B2/ja active Active
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