JP5864243B2 - ステンレス鋼の表面処理方法 - Google Patents
ステンレス鋼の表面処理方法 Download PDFInfo
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- JP5864243B2 JP5864243B2 JP2011274041A JP2011274041A JP5864243B2 JP 5864243 B2 JP5864243 B2 JP 5864243B2 JP 2011274041 A JP2011274041 A JP 2011274041A JP 2011274041 A JP2011274041 A JP 2011274041A JP 5864243 B2 JP5864243 B2 JP 5864243B2
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- stainless steel
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- hydrochloric acid
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- 229910001220 stainless steel Inorganic materials 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 29
- 239000010935 stainless steel Substances 0.000 title claims description 29
- 238000004381 surface treatment Methods 0.000 title claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 62
- 239000000243 solution Substances 0.000 claims description 33
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 22
- 150000003839 salts Chemical class 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000005764 inhibitory process Effects 0.000 claims 1
- 150000002500 ions Chemical class 0.000 description 42
- 238000005554 pickling Methods 0.000 description 40
- 230000007797 corrosion Effects 0.000 description 31
- 238000005260 corrosion Methods 0.000 description 31
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 26
- 239000007788 liquid Substances 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000137 annealing Methods 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229940079593 drug Drugs 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 241000270666 Testudines Species 0.000 description 3
- 229910001447 ferric ion Inorganic materials 0.000 description 3
- 238000007730 finishing process Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001448 ferrous ion Inorganic materials 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- DGCPSAFMAXHHDM-UHFFFAOYSA-N sulfuric acid;hydrofluoride Chemical compound F.OS(O)(=O)=O DGCPSAFMAXHHDM-UHFFFAOYSA-N 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 206010024769 Local reaction Diseases 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
(1)ステンレス鋼の線材、鋼管、継ぎ手材のいずれか1のバッチ処理ラインにおいて、ソルト処理を行った後の表面スケール除去に当たり、孔食抑制として、塩酸濃度をCl-濃度50g/L〜150g/Lとすると共に、過酸化水素剤を含有するFe3+イオン濃度10g/L〜50g/Lからなる表面処理用水溶液であって、かつ下記式を満たす表面処理用水溶液に10m 3 /min/溶液量1m 3 以上の空気を連続して供給し、処理物との反応を均質化することを特徴とするステンレス鋼の表面処理方法。
Y≦9X/20 … (1)、ただし、X:Cl- の濃度、Y:Fe3+イオン濃度
本発明では、ステンレス鋼の線材、鋼管、継ぎ手材などのバッチ処理酸洗工程への適用を対象としている。特に、ステンレス線材の場合は、塩酸(塩化物イオンを含む)系での酸洗には、溶液系での反応挙動を的確に把握し管理することにより、過剰溶解、孔食発生しない安定した処理液の管理適用が不可欠である。本発明ではステンレス線材を対象にしたフッ酸を含まない酸洗液の表面仕上げ工程への適用を目的とするものである。
本発明においては、Cl - 濃度を50g/L〜150g/Lの水溶液を使用する。塩酸(Cl - )は、硫酸に比べ、スケールへの浸透力、素地の溶解力が強く、孔食などを誘発の懸念されることから極力抑制することが必要とされていた。しかし、上述のようにその濃度範囲を適正化することにより、従来から懸念されていた孔食などの表面欠陥を誘発することなく、ステンレスなどの耐食性材料の酸洗時間を短縮することが可能なことから基本成分とした。
表1は、ステンレス鋼304、430および416をCl - 濃度40〜150g/Lまで、Fe3+イオン濃度を5g/L〜100g/Lまで変化させた溶液にステンレス鋼を浸漬処理したときの表面性状を示した。その評価は、焼鈍処理されたステンレス鋼304、430および416を、前酸洗した後ソルト処理し、後酸洗した後の表面にスケールの残存しない状態で、上記処理液に所要時間浸漬処理後の表面を評価(孔食有無による)した。なお、実処理ライン(前酸洗した後ソルト処理した後酸洗)条件を表2と合わせて図1に示す。なお、図1中の×、△、○印は、孔食発生有無とその程度を示している。×:孔食発生激しい、△:わずかだが孔食発生、○:全く孔食発生せず、にて示した。
2 過酸化水素系薬剤
3 Fe 3+ イオン液
4 酸洗槽
5 分析装置
6 廃酸ピット
7 スラッジ排出配管
8 上澄液戻り配管
Claims (2)
- ステンレス鋼の線材、鋼管、継ぎ手材のいずれか1のバッチ処理ラインにおいて、ソルト処理を行った後の表面スケール除去に当たり、孔食抑制として、塩酸濃度をCl- 濃度50g/L〜150g/Lとすると共に、過酸化水素剤を含有するFe3+イオン濃度10g/L〜50g/Lからなる表面処理用水溶液であって、かつ下記式を満たす表面処理用水溶液に10m3 /min/溶液量1m3 以上の空気を連続して供給し、処理物との反応を均質化することを特徴とするステンレス鋼の表面処理方法。
Y≦9X/20 … (1)、ただし、X:Cl- の濃度、Y:Fe3+イオン濃度 - Cl- 濃度およびFe3+イオン濃度を維持するに当たり、Cl- 濃度にあっては塩酸の補給、Fe3+イオン濃度にあっては過酸化水素剤の補給を行い管理することを特徴とする、請求項1に記載のステンレス鋼の表面処理方法。
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JP5864243B2 true JP5864243B2 (ja) | 2016-02-17 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US9650282B2 (en) | 2011-02-23 | 2017-05-16 | Dening Yang | Glass fiber with properties of high strength, energy saving, environment protecting and low viscosity, production method thereof and composite material containing the same |
CN101119939B (zh) * | 2004-12-16 | 2021-04-30 | 欧文斯科宁复合材料(中国)有限公司 | 用于增强有机和/或无机材料的玻璃丝 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56133475A (en) * | 1980-03-25 | 1981-10-19 | Kawasaki Steel Corp | Pickling method for stainless steel |
JPS63216986A (ja) * | 1987-03-03 | 1988-09-09 | Sumitomo Metal Ind Ltd | 低Cr鋼の高速酸洗方法 |
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Cited By (2)
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CN101119939B (zh) * | 2004-12-16 | 2021-04-30 | 欧文斯科宁复合材料(中国)有限公司 | 用于增强有机和/或无机材料的玻璃丝 |
US9650282B2 (en) | 2011-02-23 | 2017-05-16 | Dening Yang | Glass fiber with properties of high strength, energy saving, environment protecting and low viscosity, production method thereof and composite material containing the same |
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