JP2005105304A - 高温成形用Zn系めっき鋼材 - Google Patents
高温成形用Zn系めっき鋼材 Download PDFInfo
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- JP2005105304A JP2005105304A JP2003336915A JP2003336915A JP2005105304A JP 2005105304 A JP2005105304 A JP 2005105304A JP 2003336915 A JP2003336915 A JP 2003336915A JP 2003336915 A JP2003336915 A JP 2003336915A JP 2005105304 A JP2005105304 A JP 2005105304A
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- plated steel
- based alloy
- alloy plating
- temperature forming
- plating
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000007747 plating Methods 0.000 claims abstract description 71
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 52
- 239000000956 alloy Substances 0.000 claims abstract description 52
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910018134 Al-Mg Inorganic materials 0.000 claims description 6
- 229910018467 Al—Mg Inorganic materials 0.000 claims description 6
- 229910007570 Zn-Al Inorganic materials 0.000 claims description 6
- 229910018464 Al—Mg—Si Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- 229910021365 Al-Mg-Si alloy Inorganic materials 0.000 claims description 2
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910001297 Zn alloy Inorganic materials 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 25
- 230000007797 corrosion Effects 0.000 abstract description 25
- 229910052796 boron Inorganic materials 0.000 abstract description 4
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 229910052697 platinum Inorganic materials 0.000 abstract description 4
- 229910052702 rhenium Inorganic materials 0.000 abstract description 4
- 229910052707 ruthenium Inorganic materials 0.000 abstract description 4
- 229910052721 tungsten Inorganic materials 0.000 abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 3
- 238000010422 painting Methods 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 description 25
- 238000000576 coating method Methods 0.000 description 25
- 238000000034 method Methods 0.000 description 21
- 238000004070 electrodeposition Methods 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 210000001217 buttock Anatomy 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 230000008961 swelling Effects 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 125000002091 cationic group Chemical group 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003125 aqueous solvent Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 229910000680 Aluminized steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 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
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
- C23C28/025—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only with at least one zinc-based layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
【解決手段】 Zn系合金めっき層を鋼材表面に付与したZn系合金めっき鋼材において、Zn系合金めっき層表面に、質量%で、P:0.1〜11%、B:0.01〜13%、Mo:0.1〜60%、W:0.1〜40%、Cr:0.1〜30%、Re:0.1〜50%、Pt:0.1〜10%、Ru:0.1〜50%の1種又は2種以上を含有し、残部がNi及び不可避的不純物からなるNi系合金めっき層を有することを特徴とする高温成形用Zn系めっき鋼材。
【選択図】 なし
Description
(1)Zn系合金めっき層を鋼材表面に付与したZn系合金めっき鋼材において、Zn系合金めっき層表面に、質量%で、P:0.1〜11%、B:0.01〜13%、Mo:0.1〜60%、W:0.1〜40%、Cr:0.1〜30%、Re:0.1〜50%、Pt:0.1〜10%、Ru:0.1〜50%の1種又は2種以上を含有し、残部がNi及び不可避的不純物からなるNi系合金めっき層を有することを特徴とする高温成形用Zn系めっき鋼材。
(3)前記Zn系合金めっき層が、Zn−Fe系合金めっき、Zn−Al系合金めっき、Zn−Al−Mg系合金めっき、又は、Zn−Al−Mg−Si系合金めっきの内の何れか1種である(1)記載の高温成形用Zn系合金めっき鋼材。
(4)前記Zn−Fe系合金めっきが、質量%で、Fe:2〜15%、Al:0.02〜0.4%を含有し、残部がZn及び不可避的不純物である(3)記載の高温成形用Zn系合金めっき鋼材。
(6)前記Zn−Al−Mg系合金めっきが、質量%で、Al:2〜19%、Mg:0.1〜10%を含有し、残部がZn及び不可避的不純物である(3)記載の高温成形用Zn系合金めっき鋼材。
(7)前記Zn−Al−Mg−Si系合金めっきが、質量%で、Al:2〜19%、Mg:1〜10%、Si:0.01〜2%を含有し、残部がZn及び不可避的不純物である(3)記載の高温成形用Zn系合金めっき鋼材である。
本発明で使用する下地鋼材については、特に制約を設けないが、熱間圧延、冷間圧延材を問わず使用でき、Si、Mn、Alを多量に含有する高強度鋼が好適である。発明者らは、板厚1.2mmの合金化溶融Znめっき鋼板(付着量:片面当り50g/m2)をアルカリ脱脂洗浄した後、各種Ni系合金めっきを行った。その後、該めっき鋼板を大気中にて950℃まで2.5分で昇温後、5分間保持し、円筒成形試験を行った。成形後のめっき鋼板をりん酸塩処理後、膜厚20μmのカチオン電着塗装を行った。縦壁部にカッターナイフにて電着塗膜表面から下地鋼に達する疵を付与し、端面を塗装シールして、サイクル腐食試験に供した。
疵部の塗装後耐食性が向上する理由は不明であるが、Niめっきの合金めっき化により、緻密で耐熱性に優れためっき層が形成され、大気中での加熱時に下層のZnが蒸発もしくは酸化されることなく保持されるため、下地鋼板に対する犠牲防食能が失われないためであると推定される。
Zn系めっき層上層へのNi系合金めっきの付与法として、水溶液、非水溶媒又はZn系めっき層の融点以下の温度での溶融塩浴からの電気めっき法、気相めっき法等の何れの方法を用いてもよい。
表1に示す組成で、付着量60g/m2の板厚1.2mmのZn系めっき鋼板を、アルカリ脱脂洗浄した後、電気めっき法により表2〜10に示す組成のNi系合金めっきを行った。
成形後のめっき鋼板の外観を目視評価した。外観評価は、下記の基準で行い、◎、○を合格とした。
外観評価基準
◎:めっき層の粉化皆無
○:めっき層の粉化微小
×:めっき層の粉化大
耐食性評価基準
◎:疵部からの塗膜膨れ皆無
○:疵部からの塗膜膨れ微小
×:疵部からの塗膜膨れ大
2 カット疵部
3 カット疵部
4 端面シール部
特許出願人 新日本製鐵株式会社
代理人 弁理士 椎 名 彊 他1
Claims (7)
- Zn系合金めっき層を鋼材表面に付与したZn系合金めっき鋼材において、Zn系合金めっき層表面に、質量%で、
P:0.1〜11%、
B:0.01〜13%、
Mo:0.1〜60%、
W:0.1〜40%、
Cr:0.1〜30%、
Re:0.1〜50%、
Pt:0.1〜10%、
Ru:0.1〜50%
の1種又は2種以上を含有し、残部がNi及び不可避的不純物からなるNi系合金めっき層を有することを特徴とする高温成形用Zn系めっき鋼材。 - 前記Ni系合金めっき層の厚みが1〜10μmである請求項1記載の高温成形用Zn系めっき鋼材。
- 前記Zn系合金めっき層が、Zn−Fe系合金めっき、Zn−Al系合金めっき、Zn−Al−Mg系合金めっき、又は、Zn−Al−Mg−Si系合金めっきの内の何れか1種である請求項1記載の高温成形用Zn系合金めっき鋼材。
- 前記Zn−Fe系合金めっきが、質量%で、Fe:2〜15%、Al:0.02〜0.4%を含有し、残部がZn及び不可避的不純物である請求項3記載の高温成形用Zn系合金めっき鋼材。
- 前記Zn−Al系合金めっきが、質量%で、Al:0.1〜5%を含有し、さらに、Mg:0.01〜0.5%、La:0.001〜0.5%、又は、Ce:0.001〜0.5%の内のいずれか1種又は2種以上を含有し、残部がZn及び不可避的不純物である請求項3記載の高温成形用Zn系合金めっき鋼材。
- 前記Zn−Al−Mg系合金めっきが、質量%で、Al:2〜19%、Mg:0.5〜10%を含有し、残部がZn及び不可避的不純物である請求項3記載の高温成形用Zn系合金めっき鋼材。
- 前記Zn−Al−Mg−Si系合金めっきが、質量%で、Al:2〜19%、Mg:1〜10%、Si:0.01〜2%を含有し、残部がZn及び不可避的不純物である請求項3記載の高温成形用Zn系合金めっき鋼材。
Priority Applications (1)
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JP2003336915A JP4283629B2 (ja) | 2003-09-29 | 2003-09-29 | 高温成形用Zn系めっき鋼材 |
Applications Claiming Priority (1)
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JP2003336915A JP4283629B2 (ja) | 2003-09-29 | 2003-09-29 | 高温成形用Zn系めっき鋼材 |
Publications (2)
Publication Number | Publication Date |
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JP2005105304A true JP2005105304A (ja) | 2005-04-21 |
JP4283629B2 JP4283629B2 (ja) | 2009-06-24 |
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JP2003336915A Expired - Fee Related JP4283629B2 (ja) | 2003-09-29 | 2003-09-29 | 高温成形用Zn系めっき鋼材 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089232A (ja) * | 2014-11-06 | 2016-05-23 | 日新製鋼株式会社 | 亜鉛−アルミニウム−マグネシウム合金めっき鋼板の表面処理方法 |
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2003
- 2003-09-29 JP JP2003336915A patent/JP4283629B2/ja not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016089232A (ja) * | 2014-11-06 | 2016-05-23 | 日新製鋼株式会社 | 亜鉛−アルミニウム−マグネシウム合金めっき鋼板の表面処理方法 |
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