EP2006416B1 - Steel sheet for containers - Google Patents
Steel sheet for containers Download PDFInfo
- Publication number
- EP2006416B1 EP2006416B1 EP07740155.2A EP07740155A EP2006416B1 EP 2006416 B1 EP2006416 B1 EP 2006416B1 EP 07740155 A EP07740155 A EP 07740155A EP 2006416 B1 EP2006416 B1 EP 2006416B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- amount
- plating layer
- steel sheet
- phosphoric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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- 229910000831 Steel Inorganic materials 0.000 title claims description 60
- 239000010959 steel Substances 0.000 title claims description 60
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 116
- 238000007747 plating Methods 0.000 claims description 100
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 59
- 239000005011 phenolic resin Substances 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 46
- 229910045601 alloy Inorganic materials 0.000 claims description 30
- 239000000956 alloy Substances 0.000 claims description 30
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 26
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 19
- 238000010309 melting process Methods 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 12
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 239000001648 tannin Substances 0.000 claims description 7
- 235000018553 tannin Nutrition 0.000 claims description 7
- 229920001864 tannin Polymers 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 80
- 230000007797 corrosion Effects 0.000 description 44
- 238000005260 corrosion Methods 0.000 description 44
- 238000004519 manufacturing process Methods 0.000 description 18
- 239000002184 metal Substances 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000000243 solution Substances 0.000 description 14
- 239000003973 paint Substances 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 10
- 238000010409 ironing Methods 0.000 description 9
- 239000002335 surface treatment layer Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 7
- 239000002131 composite material Substances 0.000 description 7
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 229910001128 Sn alloy Inorganic materials 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 239000005001 laminate film Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007591 painting process Methods 0.000 description 3
- -1 phosphoric acid compound Chemical class 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229910020900 Sn-Fe Inorganic materials 0.000 description 2
- 229910019314 Sn—Fe Inorganic materials 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- JQMFQLVAJGZSQS-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JQMFQLVAJGZSQS-UHFFFAOYSA-N 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000576 Laminated steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- FPISENDBCQYRQB-UHFFFAOYSA-N phenol;phosphoric acid Chemical compound OP(O)(O)=O.OC1=CC=CC=C1 FPISENDBCQYRQB-UHFFFAOYSA-N 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
-
- 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
- C23C28/02—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
-
- 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
Definitions
- the present invention relates to a steel sheet for a container which is excellent in, as a material for use in manufacturing a can, drawing-ironing, weldability, corrosion resistance, paints adhesion and film adhesion.
- a metal container used for beverages and foods may be classified into a 2-piece can and a 3-piece can.
- a 2-piece can which is represented by a DI can
- drawing-ironing is performed, and then a can inner side is painted while a can outer side is painted and printed.
- a can inner side is painted, a can outer side is printed, and then a can body is welded.
- Solvent-based paints or water-based paints are used for the paining, and then the printing process is performed.
- waste which is derived from the paints
- exhaust gas mainly carbonic acid gas
- Patent Document 1 discloses a method for manufacturing a drawing-ironing can.
- Patent Document 2 discloses a drawing-ironing can.
- Patent Document 3 discloses a method for manufacturing a thin-walled deep drawing can.
- Patent Document 4 discloses a coating steel sheet for a drawing-ironing can.
- Patent Document 5 discloses a film laminated steel strip for a 3-piece can and a method for manufacturing the same.
- Patent Document 6 discloses a steel sheet for a 3-piece can having a multi-layered organic film laminated on an outer side of the can.
- Patent Document 7 discloses a steel sheet for a 3-piece can having a stripe-shaped multi-layered organic film.
- Patent Document 8 discloses a method for manufacturing a 3-piece can stripe laminate steel sheet.
- Patent document 9 discloses a steel sheet for a container, comprising a Ni plating layer or a Fe-Ni alloy plating layer formed on a surface of the steel sheet where a Sn plating layer of is plated on the Ni plating layer or the Fe-Ni alloy plating layer.
- the Sn plating layer is partially alloyed with the underlying Ni or Fe-Ni layer, while a part of the Sn plating layer is partially left.
- a chromate film which is subjected to an electrolytic chromate process is used for a steel sheet used as a base of a laminate film in most cases.
- the chromate film has a two-layered structure including a metal Cr layer and a hydrated oxidation Cr layer formed thereon. Accordingly, the laminate film (an adhesive layer if an adhesive is adhered to the film) secures adhesion with the steel sheet through the hydrated oxidation Cr layer of the chromate film.
- this adhesion is obtained by a hydrogen bond of a hydroxyl group of the hydrated oxidation Cr with a functional group, such as a carbonyl group or an ester group, of the laminate film.
- the above-mentioned inventions can obtain an effect of reliably advancing the preservation of the global environment.
- cost and quality competition between materials such as PET bottles, bottles, paper and so on is intensified in a beverage container market, and there is a need for excellent adhesion and corrosion resistance over the conventional paining technique, and more excellent can manufacturing workability, particularly, film adhesion, worked film adhesion, corrosion resistance and so on for the above-described steel sheet for the laminate container.
- the present invention has been made in consideration of the above problems, and it is an object of the present invention to provide a steel sheet for a container, which is excellent in adhesion, corrosion resistance, weldability, can manufacturing workability and external appearance.
- the present inventors have reviewed use of a Zr film as a new film to replace a chromate film, discovered that a composite film including the Zr film and a phosphoric acid film and a phenol resin film forms a very strong covalent bond with paints or a laminate film, which may result in excellent can manufacturing workability over a conventional chromate film, and made the present invention based on the discovery as follows.
- the steel sheet for a container of the present invention has excellent drawing-ironing, weldability, corrosion resistance, paints adhesion, film adhesion and external appearance.
- An original sheet used in the present invention is not particularly limited but may typically use a steel sheet used as a material for a container.
- a manufacturing method and material quality of the original sheet are not particularly limited, but the original sheet is manufactured from a typical billet manufacturing process through hot rolling, pickling, cold rolling, annealing, skin pass rolling processes and so on.
- a metal surface treatment layer is formed on a surface of the steel sheet
- a method of forming the layer is not particularly limited but may use, for example, an electroplating method, a vacuum deposition method, a sputtering method or others methods known in the art, and further may be combined with a heating process to form a diffusion layer.
- an Ni plating layer including Ni of 5 mg/m 2 ⁇ 150 mg/m 2 , or a Fe-Ni alloy plating layer including Ni of 5 mg/m 2 ⁇ 150 mg/m 2 is formed on the surface of the steel sheet, Sn plating layer of 300 mg/m 2 ⁇ 3000 mg/m 2 is plated thereon, and then, a tin melting process is performed to alloy part or all of the underlying Ni layer and part of the Sn plating layer while partially leaving the Sn plating layer.
- the purpose of performing the Ni or Fe-Ni plating process to form the Ni plating layer is to secure corrosion resistance. Since Ni is high corrosion resistant metal, the corrosion resistance of the alloy layer formed in the tin melting process can be enhanced by plating Ni on the surface of the steel sheet.
- the amount of Ni used is necessary to be more than 5 mg/m 2 since the effect of Ni on enhancement of the corrosion resistance of the alloy layer appears when the amount of Ni is more than 5 mg/m 2 .
- the effect of enhancement of the corrosion resistance of the alloy layer increases with increase of the amount of Ni. However, if the amount of Ni exceeds 150 mg/m 2 , the enhancement effect is saturated. In addition, Since Ni is expensive, it is uneconomical to plate Ni of more than 150 mg/m 2 . Accordingly, it is preferable to plate Ni of 5 mg/m 2 ⁇ 150 mg/m 2 .
- an Ni diffusion layer is to be formed, although a diffusion process is performed to form the Ni diffusion layer in an annealing furnace after plating Ni, even when nitriding treatment is performed before or after the Ni diffusion process or at the same time of the Ni diffusion process, the effect of Ni on the Ni plating layer and the effect of a nitriding treatment layer can be obtained.
- the electroplating method generally known in the art may be used as the Ni plating and Fe-Ni alloy plating methods.
- the Sn plating process is performed after the Ni plating.
- the Sn plating used herein is a plating using metal Sn, however impurities may be inevitably mixed into the Sn plating or a very small amount of element may be added to the Sn plating.
- the Sn plating method is not particularly limited and may be the electroplating method known in the art or a method of digesting and plating melted Sn.
- the purpose of Sn plating is to secure corrosion resistance and weldability. Since Sn has high corrosion resistance, a Sn alloy formed in the tin melting process, which will be described later, as well as Sn metal shows excellent corrosion resistance. The excellent corrosion resistance of Sn is remarkably enhanced when the amount of Sn is more than 300 mg/m 2 .
- the corrosion resistance of Sn increases with increase of the amount of Sn plating, but if the amount of Sn plating exceeds 3000 mg/m 2 , the effect of Sn is saturated. Accordingly, it is preferable to set the amount of Sn plating to be less than 3000 mg/m 2 from an economical point of view.
- the amount of Sn plating is defined to be 300 mg/m 2 ⁇ 3000 mg/m 2 .
- the tin melting process is performed after the Sn plating.
- the purpose of tin melting process is to melt Sn and alloy the melted Sn with an underlying steel sheet or underlying metal to form a Sn-Fe or Sn-Fe-Ni alloy layer, enhance corrosion resistance of the alloy layer, and leave Sn metal partially.
- the metal tin may be left in various forms of island, pool, stripe and so on.
- Sn of 560 mg/m 2 ⁇ 5600 mg/m 2 is plated on the surface of the steel sheet and some of the Sn plating layer is alloyed by the tin melting process.
- Sn has excellent workability, weldability and corrosion resistance
- Sn of more than 560 mg/m 2 is needed from a viewpoint of corrosion resistance.
- the corrosion resistance increases with increase of the amount of Sn plating, but if the amount of Sn plating exceeds 5600 mg/m 2 , the effect of Sn is saturated. Accordingly, it is preferable to set the amount of Sn plating to be less than 5600 mg/m 2 from an economical point of view.
- the Sn alloy layer is formed to further enhance the corrosion resistance.
- the Zr film, the phosphoric acid film and the phenol resin film may show an effect to some degree even when they are separately used, but do not show sufficiently practical performance.
- a composite film including two or more of the Zr film, the phosphoric acid film and the phenol resin film shows excellent practical performance.
- a composite film including the Zr film and one or more of the phosphoric acid film and the phenol resin film shows further excellent practical performance.
- the amount of film is small, since the Zr film, the phosphoric acid film and the phenol resin film complement their respective characteristics, a composite film including all of the Zr film, the phosphoric acid film and the phenol resin film show more stable practical performance.
- a single film including two or more of Zr, phosphoric acid compound and phenol shows low practical performance of corrosion resistance and adhesion as compared to the composite film including two or more of the Zr film, the phosphoric acid film and the phenol resin film. The reason for this is not obvious, but it is believed that the mixture of Zr, phosphoric acid compound and phenol hinders performance of individual components.
- the role of the Zr film is to secure the corrosion resistance and the adhesion.
- the Zr film is formed of Zr compounds such as Zr oxide, Zr hydroxide, Zr fluoride, Zr phosphate or the like, or a composite film including these components.
- the Zr compounds have excellent corrosion resistance and adhesion. Accordingly, the corrosion resistance and the adhesion increase with increase of the amount of the Zr film, and if the amount of Zr metal exceeds 1 mg/m 2 , the corrosion resistance and the adhesion are secured sufficiently from a practical point of view.
- the increase of the amount of the Zr film enhances the corrosion resistance and the adhesion
- the amount of Zr in the Zr film exceeds 500 mg/m 2 , the Zr film gets too thick, which results in deterioration of the adhesion of the Zr film, and electric resistance increases, which results in deterioration of weldability. Accordingly, it is preferable to set the amount of Zr in the Zr film to be 1 mg/m 2 ⁇ 500 mg/m 2 .
- spots adhered to the film may appear as external appearance spots if the amount of Zr in the Zr film exceeds 15 mg/m 2 , it is more preferable to set the amount of Zr in the Zr film to be 1 mg/m 2 ⁇ 15 mg/m 2 . In addition, to more stabilize the external appearance spots, it is preferable to set the amount of Zr in the Zr film to be 0.1 mg/m 2 ⁇ 9 mg/m 2 .
- the role of the phosphoric acid film is to secure the corrosion resistance and the adhesion.
- the phosphoric acid film is formed of Fe phosphate, Sn phosphate, Ni phosphate, Zr phosphate, or a film such as a phosphate-phenol resin film, or a composite film including these components. These phosphoric acid films have excellent corrosion resistance and adhesion. Accordingly, the corrosion resistance and the adhesion increase with increase of the amount of the phosphoric acid film, and if the amount of P exceeds 0.1 mg/m 2 , the corrosion resistance and the adhesion are secured sufficiently from a practical point of view.
- the increase of the amount of the phosphoric acid film enhances the corrosion resistance and the adhesion
- the amount of P in the phosphoric acid film exceeds 100 mg/m 2 , the phosphoric acid film gets too thick, which results in deterioration of the adhesion of the phosphoric acid film, and electric resistance increases, which results in deterioration of weldability. Accordingly, it is preferable to set the amount of P in the phosphoric acid film to be 0.1 mg/m 2 ⁇ 100 mg/m 2 .
- spots adhered to the film may appear as external appearance spots if the amount of P in the phosphoric acid film exceeds 15 mg/m 2 , it is more preferable to set the amount of P in the phosphoric acid film to be 0.1 mg/m 2 ⁇ 15 mg/m 2 . In addition, to more stabilize the external appearance spots, it is preferable to set the amount of P in the phosphoric acid film to be 0.1 mg/m 2 ⁇ 8 mg/m 2 .
- the role of the phenol resin film is to secure the adhesion.
- the phenol resin film has very excellent adhesion with paints or a laminate film since the phenol resin is an organic substance. Accordingly, the adhesion increases with increase of the amount of the phenol resin film, and if the amount of C exceeds 0.1 mg/m 2 , the adhesion is secured sufficiently from a practical point of view.
- the increase of the amount of the phenol resin film enhances the adhesion, if the amount of C in the phenol resin film exceeds 100 mg/m 2 , electric resistance increases, which results in deterioration of weldability. Accordingly, it is preferable to set the amount of C in the phenol resin film to be 0.1 mg/m 2 ⁇ 100 mg/m 2 .
- spots adhered to the film may appear as external appearance spots if the amount of C in the phenol resin film exceeds 15 mg/m 2 , it is more preferable to set the amount of C in the phenol resin film to be 0.1 mg/m 2 ⁇ 15 mg/m 2 . In addition, to more stabilize the external appearance spots, it is preferable to set the amount of C in the phenol resin film to be 0.1 mg/m 2 ⁇ 8 mg/m 2 .
- a method of forming the films as described above includes a method of digesting a steel sheet into an acid solution into which Zr ions, phosphoric ions and low molecular phenol resin are dissolved and a method using a cathode electrolytic process.
- adhesion is irregular since various films are formed by etching a base.
- this digesting method is disadvantageous in industrial respects since a long process time is taken.
- the cathode electrolysis method is very advantageous in industrial respects since it takes a short time, for example, several seconds to several ten seconds, to process a uniform film, in addition to effects of compulsory charge movement, surface cleaning by hydrogen generated at a steel sheet interface and promotion of adhesion by increase of pH. Accordingly, it is preferable to employ the cathode electrolytic method to form the Zr film, the phosphoric acid film and the phenol resin film.
- the tannin acid is added in the acid solution used in the digesting method and the cathode electrolysis method, the tannin acid is bonded to Fe, a tannin acid Fe film is formed on a surface, which results in enhancement of rust resistance and adhesion. Accordingly, depending on use, the films may be treated in the acid solution in which the tannin acid is added.
- a surface treatment layer is formed on a steel sheet having thickness of 0.17 mm ⁇ 0.23 mm using following processes (1) to (3).
- a performance evaluation is made in terms of following evaluation items (A) ⁇ (H).
- a sample is manufactured by laminating a 20 ⁇ m thick PET film at temperature of 200°C, and a performance evaluation is made for the sample in terms of the following items (A) ⁇ (D).
- the 20 ⁇ m thick PET film is laminated on both sides of the sample at temperature of 200°C, and can manufacturing work such as drawing and ironing are performed step by step.
- the performance evaluation for the sample is made in four steps (O : very good, O : good, ⁇ : a little scratched, and x : cut and work impossible).
- the sample is welded while varying current under a condition of welding wire speed of 80 m/min using a wire seam welder, synthetic judgment is made from a proper current range from the minimum current from which sufficient welding strength can be obtained to the maximum current at which welding defects such as dusts and welding spatters are seen.
- the performance evaluation for the sample is made in four steps (O : very good, O : good, ⁇ : inferior, and x : welding impossible).
- the 20 ⁇ m thick PET film is laminated on both sides of the sample at temperature of 200°C, drawing-ironing is performed to manufacture a can, and a retort treatment is performed at 125°C for 30 min.
- the peeling of the film is evaluated in four steps (O : no peeling, O : almost no peeling which is no problem in practical use, ⁇ : a little peeling, and x : mostly peeling).
- An epoxy-phenol resin is coated on the sample, printing is performed at 200°C for 30 min, and lattice eyes having depth reaching a binding band are inscribed at 1 mm intervals, and the sample is peeled using a tape.
- the peeling for the sample is evaluated in four steps (O : no peeling, O : almost no peeling which is no problem in practical use, ⁇ : a little peeling, and x : mostly peeling).
- An epoxy-phenol resin is coated on the sample, printing is performed at 200°C for 30 min, and cross cuts having depth reaching a binding band are inscribed, the sample is digested into a test solution as a mixture solution of 1.5% citric acid-1.5% salt at 45°C for 72 hours, cleaned, dried and peeled using a tape. Corrosion under film and corrosion of flat portion of the cross cuts are evaluated in four steps (O : no corrosion under film, O : a little corrosion which is no problem in practical use, ⁇ : very little corrosion under film and a little corrosion of flat portion, and x : severe corrosion under film and somewhat corrosion of flat portion).
- the rust for the sample is evaluated in four steps (O : no rust, O : almost no rust which is no problem in practical use, ⁇ : a little rust, and x : mostly rust).
- Sn is plated after Ni is plated, the tin melting treatment is additionally controlled, and then the Sn metal is observed using an optical microscope.
- the Sn metal is evaluated in three steps ( ⁇ : remaining throughout surface, ⁇ : partially remaining on surface, and x : no remaining).
- the embodiments 1 to 42 satisfy the conditions prescribed in the present invention.
- the above comparative examples 1 to 5 do not satisfy the conditions prescribed in the present invention.
- All the embodiments 1 to 42 obtain good evaluation results for all the evaluation items (A) to (H).
- two or more of the Zr film in which the amount of Zr is 0.1 ⁇ 9 mg/m 2 , the phosphoric acid film in which the amount of P is 0.1 ⁇ 8 mg/m 2 , and the phenol resin film in which the amount of C is 0.1 ⁇ 8 mg/m 2 are formed. On this account, it is possible to obtain excellent external appearance.
- the comparative examples 1 to 5 do not obtain good evaluation result for all the evaluation items (A) to (H).
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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)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006091353 | 2006-03-29 | ||
JP2007069262 | 2007-03-16 | ||
PCT/JP2007/056717 WO2007111354A1 (ja) | 2006-03-29 | 2007-03-28 | 容器用鋼板 |
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EP2006416A1 EP2006416A1 (en) | 2008-12-24 |
EP2006416A4 EP2006416A4 (en) | 2010-01-13 |
EP2006416B1 true EP2006416B1 (en) | 2015-08-26 |
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EP07740155.2A Active EP2006416B1 (en) | 2006-03-29 | 2007-03-28 | Steel sheet for containers |
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EP (1) | EP2006416B1 (ja) |
JP (1) | JP5214437B2 (ja) |
KR (1) | KR100993431B1 (ja) |
CN (1) | CN101410553B (ja) |
TW (1) | TWI394658B (ja) |
WO (1) | WO2007111354A1 (ja) |
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JP5251078B2 (ja) * | 2007-11-16 | 2013-07-31 | 新日鐵住金株式会社 | 容器用鋼板とその製造方法 |
JP5157487B2 (ja) * | 2008-01-30 | 2013-03-06 | 新日鐵住金株式会社 | 容器用鋼板とその製造方法 |
EP2256231A4 (en) | 2008-02-18 | 2011-12-07 | Nippon Steel Corp | PLATED COPPER STEEL SHEET AND METHOD FOR PRODUCING PLATED STEEL SHEET |
JP5571881B2 (ja) * | 2008-06-07 | 2014-08-13 | 日本パーカライジング株式会社 | 金属材料の自己析出被膜処理用表面処理液、および自己析出被膜処理方法 |
JP5786296B2 (ja) | 2010-03-25 | 2015-09-30 | Jfeスチール株式会社 | 表面処理鋼板、その製造方法およびそれを用いた樹脂被覆鋼板 |
TWI449813B (zh) * | 2010-06-29 | 2014-08-21 | Nippon Steel & Sumitomo Metal Corp | 容器用鋼板及其製造方法 |
TWI490370B (zh) * | 2010-09-15 | 2015-07-01 | Jfe Steel Corp | 容器用鋼板及其製造方法 |
JP5845563B2 (ja) | 2010-09-15 | 2016-01-20 | Jfeスチール株式会社 | 容器用鋼板の製造方法 |
CN103097583B (zh) * | 2010-09-15 | 2015-11-25 | 杰富意钢铁株式会社 | 容器用钢板及其制造方法 |
JP5760355B2 (ja) * | 2010-09-15 | 2015-08-12 | Jfeスチール株式会社 | 容器用鋼板 |
US9914584B2 (en) | 2012-05-31 | 2018-03-13 | Nippon Steel & Sumitomo Metal Corporation | Three-piece resealable can |
JP6146541B2 (ja) * | 2014-11-10 | 2017-06-14 | 新日鐵住金株式会社 | めっき鋼板およびその製造方法 |
KR102087669B1 (ko) | 2015-06-23 | 2020-03-11 | 닛폰세이테츠 가부시키가이샤 | 용기용 강판 및 용기용 강판의 제조 방법 |
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JPH0689472B2 (ja) | 1985-10-31 | 1994-11-09 | 新日本製鐵株式会社 | 製缶用薄Snメツキ鋼板及びその製造方法 |
JP2504164B2 (ja) | 1989-02-16 | 1996-06-05 | 東洋製罐株式会社 | 薄肉化深絞り缶の製造方法 |
JPH03236954A (ja) | 1990-02-14 | 1991-10-22 | Nippon Steel Corp | スリーピース缶用フィルム積層鋼帯およびその製造方法 |
JP3089433B2 (ja) | 1991-05-17 | 2000-09-18 | 新日本製鐵株式会社 | 3ピース缶用ストライプラミネート鋼板の製造方法 |
JP2998042B2 (ja) | 1991-05-17 | 2000-01-11 | 新日本製鐵株式会社 | ストライプ状の多層有機皮膜を有するスリーピース缶用鋼板 |
JP3742533B2 (ja) * | 1998-12-14 | 2006-02-08 | 新日本製鐵株式会社 | 製缶加工性に優れたラミネート容器用鋼板 |
JP2002355921A (ja) * | 2001-05-31 | 2002-12-10 | Nippon Steel Corp | 密着性、耐食性に優れた容器用鋼板 |
JP3893964B2 (ja) | 2001-12-13 | 2007-03-14 | Jfeスチール株式会社 | ポリエチレンフィルム被覆錫合金めっき鋼板 |
JP4293065B2 (ja) | 2004-06-21 | 2009-07-08 | 東洋製罐株式会社 | 耐硫化変色性、耐食性に優れた溶接缶 |
JP4492224B2 (ja) | 2004-06-22 | 2010-06-30 | 東洋製罐株式会社 | 表面処理金属材料及びその表面処理方法、並びに樹脂被覆金属材料 |
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JP5131720B2 (ja) | 2005-09-09 | 2013-01-30 | 株式会社アマダ | 曲げ加工装置 |
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CN101410553A (zh) | 2009-04-15 |
CN101410553B (zh) | 2012-06-27 |
EP2006416A1 (en) | 2008-12-24 |
JP5214437B2 (ja) | 2013-06-19 |
KR100993431B1 (ko) | 2010-11-09 |
TW200800589A (en) | 2008-01-01 |
KR20080109804A (ko) | 2008-12-17 |
JPWO2007111354A1 (ja) | 2009-08-13 |
EP2006416A4 (en) | 2010-01-13 |
TWI394658B (zh) | 2013-05-01 |
WO2007111354A1 (ja) | 2007-10-04 |
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