JP2010111894A - 亜鉛系めっき鋼板の製造方法 - Google Patents
亜鉛系めっき鋼板の製造方法 Download PDFInfo
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- JP2010111894A JP2010111894A JP2008283823A JP2008283823A JP2010111894A JP 2010111894 A JP2010111894 A JP 2010111894A JP 2008283823 A JP2008283823 A JP 2008283823A JP 2008283823 A JP2008283823 A JP 2008283823A JP 2010111894 A JP2010111894 A JP 2010111894A
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- steel sheet
- acidic solution
- galvanized steel
- oxide layer
- solution
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 229910001335 Galvanized steel Inorganic materials 0.000 title claims abstract description 17
- 239000008397 galvanized steel Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000007747 plating Methods 0.000 claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 239000006174 pH buffer Substances 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- 239000003929 acidic solution Substances 0.000 claims description 51
- 239000011701 zinc Substances 0.000 claims description 28
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 24
- 229910052725 zinc Inorganic materials 0.000 claims description 24
- 230000003139 buffering effect Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 5
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 229940095064 tartrate Drugs 0.000 claims description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000000872 buffer Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 5
- 238000005246 galvanizing Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- 238000011282 treatment Methods 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000011324 bead Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 238000005554 pickling Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 3
- 229940001447 lactate Drugs 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229940001468 citrate Drugs 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 229940086735 succinate Drugs 0.000 description 2
- RQALKBLYTUKBFV-UHFFFAOYSA-N 1,4-dioxa-7-thiaspiro[4.4]nonane Chemical compound O1CCOC11CSCC1 RQALKBLYTUKBFV-UHFFFAOYSA-N 0.000 description 1
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 1
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- PYRZPBDTPRQYKG-UHFFFAOYSA-N cyclopentene-1-carboxylic acid Chemical compound OC(=O)C1=CCCC1 PYRZPBDTPRQYKG-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- IWZKICVEHNUQTL-UHFFFAOYSA-M potassium hydrogen phthalate Chemical compound [K+].OC(=O)C1=CC=CC=C1C([O-])=O IWZKICVEHNUQTL-UHFFFAOYSA-M 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- HELHAJAZNSDZJO-OLXYHTOASA-L sodium L-tartrate Chemical compound [Na+].[Na+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O HELHAJAZNSDZJO-OLXYHTOASA-L 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000001540 sodium lactate Substances 0.000 description 1
- 229940005581 sodium lactate Drugs 0.000 description 1
- 235000011088 sodium lactate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- 239000001433 sodium tartrate Substances 0.000 description 1
- 229960002167 sodium tartrate Drugs 0.000 description 1
- 235000011004 sodium tartrates Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 150000003890 succinate salts Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
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- Chemical Treatment Of Metals (AREA)
- Coating With Molten Metal (AREA)
Abstract
【解決手段】鋼板に亜鉛系めっきを施した後、酸性溶液に接触させてめっき皮膜表面に酸化物層を形成する亜鉛系めっき鋼板の製造方法において、酸性溶液として、溶存酸素濃度が8.30ppm以上であるpH緩衝作用を有する酸性溶液を用いるとともに、酸性溶液に接触後、大気中に1〜60秒放置し、水洗することを特徴とする亜鉛系めっき鋼板の製造方法。
【選択図】図1
Description
条件1:図3のビード、押付荷重N=400kgf、スライドテーブル13の水平移動速度=100cm/min
条件2:図4のビード、押付荷重N=400kgf、スライドテーブル13の水平移動速度=20cm/min
結果を表1、2に示す。
2 酸性溶液槽
3 絞りロール
4 シャワー水洗装置
5 #1洗浄槽
6 中和槽
7 #2洗浄槽
8 ドライヤー
S 鋼板
11 試料
12 試料台
13 スライドテーブル
14 ローラ
15 スライドテーブル支持台
16 ビード
17 第1ロードセル
18 第2ロードセル
19 レール
N 押付荷重
F 摺動抵抗力
Claims (7)
- 鋼板に亜鉛系めっきを施した後、酸性溶液に接触させてめっき皮膜表面に酸化物層を形成する亜鉛系めっき鋼板の製造方法において、酸性溶液として、溶存酸素濃度が8.30ppm以上であるpH緩衝作用を有する酸性溶液を用いるとともに、酸性溶液に接触後、大気中に1〜60秒放置し、水洗することを特徴とする亜鉛系めっき鋼板の製造方法。
- 溶存酸素濃度が10.00ppm以上のpH緩衝作用を有する酸性溶液を用いることを特徴とする請求項1に記載の亜鉛系めっき鋼板の製造方法。
- 溶存酸素濃度が15.00ppm以上のpH緩衝作用を有する酸性溶液を用いることを特徴とする請求項1に記載の亜鉛系めっき鋼板の製造方法。
- pH緩衝作用を有する酸性溶液として、酢酸塩、フタル酸塩、クエン酸塩、コハク酸塩、乳酸塩、酒石酸塩、ホウ酸塩、リン酸塩のうち少なくとも1種類以上を含有し、pHが1.0〜5.0の範囲にある酸性溶液を用いることを特徴とする請求項1〜3のいずれか1項に記載の亜鉛系めっき鋼板の製造方法。
- 酢酸塩、フタル酸塩、クエン酸塩、コハク酸塩、乳酸塩、酒石酸塩、ホウ酸塩、リン酸塩のうち少なくとも1種類以上を、各5〜50g/lの範囲で含有する酸性溶液を用いることを特徴とする請求項4に記載の亜鉛系めっき鋼板の製造方法。
- 酸性溶液に接触後、アルカリ性溶液に接触させて表面に残存した酸性溶液の中和処理を行うことを特徴とする請求項1〜5のいずれか1項に記載の亜鉛系めっき鋼板の製造方法。
- 酸性溶液に接触後、鋼板表面に形成される液膜の付着量を15g/m2以下にすることを特徴とする請求項1〜6のいずれか1項に記載の亜鉛系めっき鋼板の製造方法。
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