JP4344219B2 - 電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板 - Google Patents
電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板 Download PDFInfo
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- JP4344219B2 JP4344219B2 JP2003380855A JP2003380855A JP4344219B2 JP 4344219 B2 JP4344219 B2 JP 4344219B2 JP 2003380855 A JP2003380855 A JP 2003380855A JP 2003380855 A JP2003380855 A JP 2003380855A JP 4344219 B2 JP4344219 B2 JP 4344219B2
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- steel sheet
- corrosion resistance
- zinc
- coating
- organic
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- Expired - Fee Related
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- 238000000576 coating method Methods 0.000 title claims description 40
- 239000011248 coating agent Substances 0.000 title claims description 39
- 239000011701 zinc Substances 0.000 title claims description 34
- 238000005260 corrosion Methods 0.000 title claims description 30
- 230000007797 corrosion Effects 0.000 title claims description 30
- 229910000831 Steel Inorganic materials 0.000 title claims description 24
- 239000010959 steel Substances 0.000 title claims description 24
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims description 21
- 229910052725 zinc Inorganic materials 0.000 title claims description 21
- 239000002131 composite material Substances 0.000 title claims description 15
- 238000004070 electrodeposition Methods 0.000 title claims description 13
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 43
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 43
- 239000010410 layer Substances 0.000 claims description 19
- 238000007747 plating Methods 0.000 claims description 15
- 239000013078 crystal Substances 0.000 claims description 11
- 239000011247 coating layer Substances 0.000 claims description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 8
- 239000008397 galvanized steel Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 229910052749 magnesium Inorganic materials 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- -1 nitrate ions Chemical class 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 208000023514 Barrett esophagus Diseases 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- YWEUIGNSBFLMFL-UHFFFAOYSA-N diphosphonate Chemical compound O=P(=O)OP(=O)=O YWEUIGNSBFLMFL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 229940085991 phosphate ion Drugs 0.000 description 1
- DLYUQMMRRRQYAE-UHFFFAOYSA-N phosphorus pentoxide Inorganic materials O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- SPDJAIKMJHJYAV-UHFFFAOYSA-H trizinc;diphosphate;tetrahydrate Chemical compound O.O.O.O.[Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O SPDJAIKMJHJYAV-UHFFFAOYSA-H 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
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
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
- C23C28/3225—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer 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
-
- 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
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laminated Bodies (AREA)
Description
すなわち本発明の要旨とするところは、鋼板上に(002)面の結晶配向が65%以上のZnめっき層を有し、その上層にMgを含有するリン酸亜鉛皮膜を有し、更にその上層に有機皮膜層を有し、上記リン酸亜鉛皮膜中のMg/P(質量比)が0.1以上であり、Mg量が20mg/m 2 以上であることを特長とする電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板である。
また、有機皮膜層がエポキシ樹脂およびまたは変性エポキシ樹脂を含有し、有機皮膜層の付着量が0.3〜5g/m2であることが望ましい。
本発明の電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板のZnめっき層としては、電気めっき、溶融めっき等の手段は問わないが、(002)面の結晶配向が65%以上であることが必要である。ここで、(002)面の結晶配向とは、X線回折装置によりZnメッキ結晶の各ピーク強度を測定し、(002)面に相当する面のピーク強度を各ピーク強度の和で除して百分率としたもの、と定義したものである。Znめっき層の付着量としては、特に限定されないが、より高度の耐食性が要求される場合には20g/m2以上であることが望ましい。
上記リン酸亜鉛処理皮膜は、下限0.3g/m2、上限5g/m2の皮膜量で形成されたものであることが望ましい。0.3g/m2未満であると、耐食性が不十分であるおそれがあり、5g/m2を超えると、厳しい加工を実施した場合に皮膜の剥離が発生するおそれがある。
電気亜鉛めっき鋼板製造ラインにて、Zn付着量(片面あたり)40g/m2で、めっき浴濃度とめっき電流密度を調整することにより、Zn結晶配向の異なる各種の亜鉛めっき鋼板を製造した。
前記電気亜鉛めっき鋼板をアルカリ脱脂の後、市販のTiO2コロイド系表面調整処理を行い、リン酸亜鉛処理を行った。リン酸亜鉛処理液はZnイオン2.5g/l、Niイオン2.0g/l、Mnイオン2.5g/l、Mgイオン15g/l、PO4イオン14g/l含有するものを用い、スプレー法により温度45℃で処理時間1〜10秒間処理し、水洗乾燥した。
前記リン酸亜鉛処理亜鉛めっき鋼板を用い、有機皮膜処理を行った。有機皮膜処理は、ビニル変性エポキシエステル樹脂にブロックイソシアネート硬化剤、変性ポリエチレンワックス、縮合アゾ系の赤色顔料を配合(それぞれの固形分重量比は、100:10:5:3)した水性樹脂をベースに、コロイダルシリカを固形分重量比で16%になるように添加した塗料を用い、ロールコータにより塗布し、その後到達板温度で150℃になるように焼き付け、水冷した。
(002)面結晶配向;RIGAKU製RINT2000を用い管球Cu、40kV/200mAにて2θ5〜90°のスキャン(4°/min)を行い、Znの各結晶面のピーク強度を測定し、002面強度を各結晶面ピーク強度の和で除して(002)面配向比を求めた。
無塗装耐食性;サンプルを市販の洗浄油で洗浄後、Uビード曲げ加工(サンプル幅70mm、BHF=1ton、加工高さ=70mm、ビード部ポンチR=5mm、ビード部ダイスR=3mm、ポンチR=5mm、ダイスR=5mm、加工速度=25spm)を行い、その側面(ダイス側)を切り出して、脱脂した後、端面と裏面をセロテープシールし、CCT試験*を行った。15サイクル後の赤錆発生状況を観察した。「○」;1%未満、「△」;1〜10%、「×」;10%超。
Claims (2)
- 鋼板上に(002)面の結晶配向が65%以上のZnめっき層を有し、その上層にMgを含有するリン酸亜鉛皮膜を有し、更にその上層に有機皮膜層を有し、上記リン酸亜鉛皮膜中のMg/P(質量比)が0.1以上であり、Mg量が20mg/m 2 以上であることを特長とする電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板。
- 有機皮膜層がエポキシ樹脂およびまたは変性エポキシ樹脂を含有し、また有機皮膜層の付着量が0.3〜5g/m2であることを特長とする請求項1に記載の電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003380855A JP4344219B2 (ja) | 2003-11-11 | 2003-11-11 | 電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板 |
PCT/JP2004/016916 WO2005045097A1 (ja) | 2003-11-11 | 2004-11-09 | 無機有機複合処理亜鉛系めっき鋼板 |
TW93134275A TWI279452B (en) | 2003-11-11 | 2004-11-10 | A Zn-plated steel sheet with an inorganic and organic composite plated layer excellent in corrosion resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003380855A JP4344219B2 (ja) | 2003-11-11 | 2003-11-11 | 電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005146294A JP2005146294A (ja) | 2005-06-09 |
JP4344219B2 true JP4344219B2 (ja) | 2009-10-14 |
Family
ID=34567256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003380855A Expired - Fee Related JP4344219B2 (ja) | 2003-11-11 | 2003-11-11 | 電着塗装後耐食性に優れた無機有機複合処理亜鉛系めっき鋼板 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4344219B2 (ja) |
TW (1) | TWI279452B (ja) |
WO (1) | WO2005045097A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5660304B2 (ja) * | 2010-11-26 | 2015-01-28 | Jfeスチール株式会社 | 電気亜鉛めっき鋼板およびその製造方法 |
KR102133749B1 (ko) * | 2016-04-13 | 2020-07-14 | 닛폰세이테츠 가부시키가이샤 | 표면 처리 강대 및 표면 처리 강대의 제조 방법 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001131763A (ja) * | 1999-11-09 | 2001-05-15 | Nippon Steel Corp | 有機複合亜鉛系メッキ鋼板 |
JP3354142B2 (ja) * | 2001-02-28 | 2002-12-09 | 川崎製鉄株式会社 | 色調が明るく導電性に優れた電気亜鉛系めっき鋼板 |
-
2003
- 2003-11-11 JP JP2003380855A patent/JP4344219B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-09 WO PCT/JP2004/016916 patent/WO2005045097A1/ja active Application Filing
- 2004-11-10 TW TW93134275A patent/TWI279452B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2005146294A (ja) | 2005-06-09 |
TW200519225A (en) | 2005-06-16 |
TWI279452B (en) | 2007-04-21 |
WO2005045097A1 (ja) | 2005-05-19 |
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