WO2012036200A1 - 容器用鋼板の製造方法 - Google Patents
容器用鋼板の製造方法 Download PDFInfo
- Publication number
- WO2012036200A1 WO2012036200A1 PCT/JP2011/070981 JP2011070981W WO2012036200A1 WO 2012036200 A1 WO2012036200 A1 WO 2012036200A1 JP 2011070981 W JP2011070981 W JP 2011070981W WO 2012036200 A1 WO2012036200 A1 WO 2012036200A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel plate
- chemical conversion
- treatment
- amount
- conversion film
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000011282 treatment Methods 0.000 claims abstract description 58
- 239000000126 substance Substances 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000002500 ions Chemical class 0.000 claims abstract description 14
- 238000007654 immersion Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 46
- 239000010410 layer Substances 0.000 claims description 39
- 238000007747 plating Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 18
- 239000002335 surface treatment layer Substances 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000005011 phenolic resin Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 23
- 238000007739 conversion coating Methods 0.000 abstract 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 41
- 230000007797 corrosion Effects 0.000 description 18
- 238000005260 corrosion Methods 0.000 description 18
- 229910052718 tin Inorganic materials 0.000 description 13
- 238000005097 cold rolling Methods 0.000 description 9
- -1 ammonium ions Chemical class 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 238000005868 electrolysis reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910001128 Sn alloy Inorganic materials 0.000 description 5
- 238000011088 calibration curve Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910020938 Sn-Ni Inorganic materials 0.000 description 2
- 229910008937 Sn—Ni Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000005001 laminate film Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 229910020900 Sn-Fe Inorganic materials 0.000 description 1
- 229910019314 Sn—Fe Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical group OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910001392 phosphorus oxide Inorganic materials 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-UHFFFAOYSA-N 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 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
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
- C25D5/505—After-treatment of electroplated surfaces by heat-treatment of electroplated tin coatings, e.g. by melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
- B32B15/015—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- 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
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/361—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
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- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
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- 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
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
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- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
- C25D9/10—Electrolytic coating other than with metals with inorganic materials by cathodic processes on iron or steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/28—Multiple coating on one surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
- B32B2439/66—Cans, tins
Definitions
- the present invention relates to a method for manufacturing a steel plate for containers.
- any of the can types has been coated on a steel plate used for the can (steel plate for containers).
- a technique for laminating a film as an alternative to painting has attracted attention. It has spread rapidly.
- the chromate film was conventionally formed on the steel sheet used for the base of the laminate film, but in recent years, restrictions on the use of harmful substances such as lead and cadmium and consideration for the working environment of the manufacturing plant have begun to be screamed. The use of chromate film is now required.
- Patent Document 1 discloses that Zr formed on a steel plate by dipping or electrolytic treatment in a solution containing Zr ions, F ions, ammonium ions, and nitrate ions.
- an object of this invention is to provide the manufacturing method of the steel plate for containers which can obtain the steel plate for containers excellent in high film adhesiveness.
- the present inventor has formed a predetermined chemical conversion film on a steel plate, and then washed with water at a temperature of 80 ° C. or higher and dried to achieve high film adhesion.
- the present inventors have found that an excellent steel sheet for containers can be obtained and completed the present invention. That is, the present invention provides the following (1) to (6).
- the chemical conversion film is formed on the steel sheet by immersion treatment in a liquid or electrolytic treatment using the treatment liquid, and then the steel sheet on which the chemical conversion film is formed is washed with water at a temperature of 80 ° C. or more.
- the manufacturing method of the steel plate for containers which performs drying.
- the steel sheet at least one side, has a surface treatment layer containing a 100 ⁇ 15000 mg / m 2 Sn In Ni or the metal Sn of 10 ⁇ 1000 mg / m 2 of metal Ni amount, the (1) - ( The manufacturing method of the steel plate for containers as described in any one of 4).
- the steel sheet is subjected to Ni plating or Fe—Ni alloy plating on its surface to form a base Ni layer, and Sn plating is applied to the base Ni layer, and a part of the Sn plating and the base A part or all of the Ni layer is alloyed by a molten tin treatment to form an Sn plating layer containing island-shaped Sn, and the underlying Ni layer contains 5 to 150 mg / m 2 of Ni in the amount of metallic Ni
- the method for producing a steel plate for containers of the present invention is a method for producing a steel plate for containers having a chemical conversion film having a metal Zr content of 1 to 100 mg / m 2 and an F content of 0.1 mg / m 2 or less on the steel plate,
- the chemical conversion film was formed on the steel sheet by immersion treatment in a treatment liquid containing Zr ions, F ions, ammonium ions, and nitrate ions or by electrolytic treatment using the treatment liquid, and then the chemical conversion film was formed.
- the manufacturing method of the steel plate for containers of this invention is demonstrated in detail.
- ⁇ Steel plate> It does not specifically limit as a steel plate used by this invention, Usually, the steel plate original plate used as a container material can be used. In addition, the manufacturing method and material of the steel plate are not particularly restricted, and the steel plate is manufactured through various steps such as hot rolling, pickling, cold rolling, annealing, temper rolling, etc. Can be used.
- the steel plate used in the present invention may have a surface treatment layer containing nickel (Ni) and / or tin (Sn) on at least one side.
- Such a surface treatment layer is a Ni plating layer, a Sn plating layer, a Sn—Ni alloy plating layer, or the like.
- the amount of metallic Ni is preferably 10 to 1000 mg / m 2 from the reason that these characteristics are more excellent and from an economical viewpoint.
- the amount of metal Sn is preferably 100 to 15000 mg / m 2 from the reason that these properties are more excellent and from an economical viewpoint, and because the weldability is more excellent. ⁇ and even preferably at 15000 mg / m 2, for the reason that processability is more excellent, and even more preferably in the range of 1000 ⁇ 15000mg / m 2.
- the method for forming the surface treatment layer is not particularly limited, and for example, known methods such as electroplating, immersion plating, vacuum deposition, and sputtering can be used. In order to form, heat treatment may be combined.
- the Ni plating layer may be a layer formed by applying metal Ni plating or an Fe—Ni alloy plating layer formed by applying iron (Fe) -nickel (Ni) alloy plating.
- the Sn plating layer is formed by plating with metal Sn (Sn plating), but “Sn plating” in the present invention is a mixture of irreversible impurities in metal Sn or a trace element added to metal Sn. It is also included.
- an Sn plating layer containing island-shaped Sn may be formed.
- Ni plating or Fe—Ni alloy plating is applied to the surface of the steel sheet to form a base Ni layer, and Sn plating is applied to the base Ni layer.
- a part of the Sn plating and a part of the base Ni layer are formed.
- all are alloyed by a molten tin treatment to form an Sn plating layer containing island-shaped Sn.
- Sn is melted and alloyed with the steel plate and the underlying Ni layer, and a Sn—Fe alloy layer or a Sn—Fe—Ni alloy layer is formed, improving the corrosion resistance of the alloy layer.
- An island-shaped Sn alloy is formed.
- the island-shaped Sn alloy can be formed by appropriately controlling the molten tin treatment.
- Ni is a highly corrosion-resistant metal, the corrosion resistance of the alloy layer containing Fe and Sn formed by molten tin treatment can be improved.
- the amount of metallic Ni in the underlying Ni layer is preferably 5 to 150 mg / m 2 from the viewpoint of the development of corrosion resistance and the economical viewpoint.
- nitriding treatment may be performed before or after the heat treatment or simultaneously with the heat treatment.
- the excellent corrosion resistance of Sn is remarkably improved from the amount of metal Sn of 300 mg / m 2 or more, and the degree of improvement in corrosion resistance increases as the Sn content increases. Therefore, the amount of metal Sn in the Sn plating layer containing island-shaped Sn is preferably 300 mg / m 2 or more. Moreover, since the corrosion resistance improving effect is saturated when the amount of metal Sn exceeds 3000 mg / m 2 , the Sn content is preferably 3000 mg / m 2 or less from an economical viewpoint.
- the amount of metal Sn is preferably set to 300 mg / m 2 or more and 3000 mg / m 2 or less.
- the amount of metallic Ni or the amount of metallic Sn in the surface treatment layer can be measured by, for example, the fluorescent X-ray method.
- a calibration curve related to the amount of metal Ni is specified in advance using a sample of the amount of deposited Ni that has a known amount of metal Ni, and the amount of metal Ni is relatively specified using this calibration curve.
- a calibration curve related to the amount of metal Sn is specified in advance using a sample of the amount of Sn deposited with a known amount of metal Sn, and the amount of metal Sn is specified relatively using this calibration curve. To do.
- the chemical conversion film is a film formed on the above-described steel sheet, and is a film having a metal Zr content of 1 to 100 mg / m 2 and an F content of 0.1 mg / m 2 or less.
- a method for forming a chemical conversion film for example, a method in which a steel sheet is immersed in a treatment solution (acid solution) in which Zr ions and F ions are dissolved; a cathode in a treatment solution containing Zr ions and F ions; The method performed by electrolytic treatment; and the like can be mentioned, and the method performed by cathodic electrolytic treatment is preferable because a uniform film can be obtained.
- cathodic electrolytic treatment it is preferable that nitrate ions and ammonium ions coexist in the treatment liquid.
- the treatment liquid may contain phosphate ions.
- the bath temperature of the cathodic electrolysis is preferably 10 to 40 ° C. (low temperature cathodic electrolysis) from the viewpoints of film formation efficiency, cost, uniformity of the film structure formed, and the like. processing).
- the electrolytic current density of the cathodic electrolysis treatment is 0.05 to 50 A / dm 2 from the viewpoints of suppressing the decrease in the amount of film adhesion, forming a stable film, treating time, and suppressing the decrease in film characteristics.
- the energization time of the cathodic electrolysis treatment is preferably 0.01 to 5 seconds from the viewpoints of suppressing the decrease in the amount of film adhesion, forming a stable film, treating time, and suppressing the decrease in film characteristics.
- the chemical conversion film contains a Zr compound.
- the role of the Zr compound is to ensure corrosion resistance and adhesion.
- Zr compounds are considered to be Zr hydrated oxides and Zr phosphorous oxides, and these Zr compounds have excellent corrosion resistance and adhesion.
- the “Zr hydrated oxide” means a state in which Zr oxide and Zr hydroxide are mixed. If the amount of metal Zr in the chemical conversion film is 1 mg / m 2 or more, a practically satisfactory level of corrosion resistance and adhesion are ensured. On the other hand, if the amount of metal Zr exceeds 100 mg / m 2 , the adhesiveness of the chemical conversion film itself deteriorates and the electrical resistance increases and the weldability deteriorates. Therefore, the amount of metal Zr in the chemical conversion film is 1 to 100 mg / m 2 , preferably 1 to 20 mg / m 2 , and more preferably 1 to 10 mg / m 2 .
- the amount of P in the chemical conversion film is preferably 0.1 to 50 mg / m 2 , preferably 0.1 to 20 mg / m 2 , and preferably 0.1 to 10 mg / m 2. More preferred.
- F Since F is contained in the treatment liquid, it is taken into the film together with the Zr compound. F in the film does not affect the normal adhesion of the paint or film, but causes deterioration in adhesion, rust resistance, or under-coating corrosion during high temperature sterilization such as retort treatment. It is considered that this is because F in the film is eluted into water vapor or a corrosive liquid, and the bond with the organic film is decomposed or the base steel sheet is corroded. When the amount of F in the chemical conversion film exceeds 0.1 mg / m 2 , the deterioration of these characteristics starts to become obvious, and is 0.1 mg / m 2 or less.
- a cleaning process may be performed by a dipping process or a spray process in warm water.
- the F amount can be decreased by increasing the processing temperature or extending the processing time.
- immersion treatment or spray treatment may be performed with warm water of 40 ° C. or more for 0.5 seconds or more.
- the amount of metal Zr, P, and F in the chemical conversion film can be measured, for example, by a quantitative analysis method such as fluorescent X-ray analysis.
- the concentration of ammonium ions in the treatment liquid may be adjusted as appropriate according to the production equipment and production speed (capacity) in the range of about 100 to 10000 ppm and the concentration of nitrate ions in the range of about 1000 to 20000 ppm.
- the treatment liquid may contain a phenol resin.
- the phenol resin component include N, N-diethanolamine-modified water-soluble phenol resin.
- a treatment liquid containing a phenol resin By using a treatment liquid containing a phenol resin, a composite film of a Zr compound and a phenol resin is provided. Since the phenol resin itself is an organic substance, it is considered that the adhesion to the laminate film is improved.
- the amount of C in the chemical conversion film is preferably 0.1 to 50 mg / m 2 , preferably 0.1 to 10 mg / m 2 , and preferably 0.1 to 8 mg / m 2. More preferred.
- the amount of C in the chemical conversion film can be measured by subtracting the amount of C existing in the steel plate using a TOC (total organic carbon meter).
- the steel sheet on which the chemical conversion film is formed is washed with water at a temperature of 80 ° C. or higher, more preferably at a temperature of 90 ° C. or higher, and then dried.
- the surface of the chemical conversion film is appropriately roughened and the high film adhesion is improved.
- an effect is seen also by the point which removes F which exists in a chemical conversion film, and reduces F amount by performing such washing
- the cleaning method is not particularly limited, and examples thereof include a method of immersing a steel sheet on which a chemical conversion film is formed; a method of applying water to the steel sheet on which a chemical conversion film is formed using a spray; Can be mentioned.
- the immersion time is not particularly limited, but is preferably 1 second or longer.
- the drying temperature is not particularly limited, but is preferably 70 ° C. or higher.
- a surface treatment layer was formed on a steel plate having a thickness of 0.17 to 0.23 mm by using the following treatment methods (1-0) to (1-7).
- a chemical conversion film was formed by the following treatment methods (2-1) to (2-3).
- a chemical conversion film was formed by cathodic electrolysis under the conditions shown in Table 1.
- K 2 ZrF 6 (4.3 g / L) and phosphoric acid (1.2 g / L) were dissolved in ammonium nitrate and the pH of the steel plate was adjusted to 2.65.
- a chemical conversion film was formed by immersion and cathodic electrolysis under the conditions shown in Table 1 at a bath temperature of 30 ° C. (2-3) K 2 ZrF 6 (4.3 g / L), sodium phosphate (1.4 g / L) and phenol resin (0.7 g / L) are dissolved, and phosphoric acid is added to adjust the pH to 2
- the steel sheet was immersed in a treatment liquid adjusted to .65, and a chemical conversion film was formed by cathodic electrolysis at a bath temperature of 30 ° C. under the conditions shown in Table 1.
- the phenol resin the above-described water-soluble phenol resin modified with N, N-diethanolamine (weight average molecular weight: 5000) was used.
- the amount of metallic Ni and the amount of metallic Sn in the surface treatment layer were measured by a fluorescent X-ray method and specified using a calibration curve. Further, the amount of metal Zr, the amount of P, and the amount of F contained in the chemical conversion film were measured by a quantitative analysis method such as fluorescent X-ray analysis. Moreover, the amount of C contained in the chemical conversion film was measured by subtracting the amount of C existing in the steel sheet using TOC (total organic carbon meter).
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Abstract
Description
本発明者らが、特許文献1に開示された容器用鋼板を用いて、ネック部分に関するフィルム密着性(以下、「高フィルム密着性」ともいう)について検討を行ったところ、昨今求められているレベルには達しておらず、改良が必要であることが分かった。
そこで、本発明は、高フィルム密着性に優れた容器用鋼板を得ることができる容器用鋼板の製造方法を提供することを目的とする。
すなわち、本発明は、以下の(1)~(6)を提供する。
以下、本発明の容器用鋼板の製造方法について詳細に説明する。
本発明で用いられる鋼板としては、特に限定されず、通常、容器材料として使用される鋼板原板を用いることができる。また、この鋼板原板の製造方法、材質なども特に規制されるものではなく、通常の鋼片製造工程から熱間圧延、酸洗、冷間圧延、焼鈍、調質圧延等の各工程を経て製造されたものを使用することができる。
下地Ni層中の金属Ni量は、耐食性発現の観点および経済的な観点から、5~150mg/m2であることが好ましい。
下地Ni層として、加熱処理を施して拡散層を形成する場合、加熱処理の前後または加熱処理と同時に、窒化処理を行ってもよい。
化成皮膜は、上述した鋼板上に形成される皮膜であって、金属Zr量1~100mg/m2、F量0.1mg/m2以下の皮膜である。
特に陰極電解処理においては、処理液中に硝酸イオンとアンモニウムイオンとを共存させることが好ましい。これにより、数秒から数十秒程度の短時間処理が可能となり、また、耐食性や密着性の向上効果に優れた化成皮膜の形成が可能となる。
また、処理液中には、リン酸イオンが含有されていてもよい。
化成皮膜中の金属Zr量が1mg/m2以上であれば、実用上、問題ないレベルの耐食性と密着性が確保される。また、金属Zr量が100mg/m2を超えると、化成皮膜自体の密着性が劣化するとともに電気抵抗が上昇し溶接性が劣化する。したがって、化成皮膜中の金属Zr量は、1~100mg/m2であり、1~20mg/m2であるのが好ましく、1~10mg/m2であるのがより好ましい。
化成皮膜中のF量は、0.1mg/m2を超えると、これらの諸特性の劣化が顕在化し始めることから、0.1mg/m2以下である。
化成皮膜中のF量を0.1mg/m2以下にするためには、化成皮膜を形成した後、温水中での浸漬処理やスプレー処理により洗浄処理を行えばよい。この際、処理温度を高く、または、処理時間を長くすることによりF量を減少させることができる。
例えば、化成皮膜中のF量を0.1mg/m2以下にするには40℃以上の温水で0.5秒以上の浸漬処理あるいはスプレー処理をすればよい。
本発明においては、化成皮膜を形成した後に、化成皮膜が形成された鋼板を、温度80℃以上、より好ましくは温度90℃以上の水で洗浄し、その後、乾燥を行う。このような洗浄を行うことにより得られる容器用鋼板においては、化成皮膜の表面が適度に粗面化され、高フィルム密着性が良好になるものと考えられる。
また、このような洗浄を行うことにより、化成皮膜中に存するFを除去してF量を減少させる点でも効果が見られる。
なお、浸漬の場合、浸漬時間は、特に限定されないが、1秒以上であるのが好ましい。
また、乾燥の温度は、特に限定されないが、70℃以上であるのが好ましい。
以下の処理法(1-0)~(1-7)の方法を用いて、板厚0.17~0.23mmの鋼板上に表面処理層を形成した。
(1-0)冷間圧延後、焼鈍、調圧された原板に脱脂、酸洗を施した鋼板を作製した。
(1-1)冷間圧延後、焼鈍、調圧された原板を脱脂、酸洗後、硫酸-塩酸浴を用いてSn-Ni合金めっきを施し、Ni、Snめっき鋼板を作製した。
(1-2)冷間圧延後、焼鈍、調圧された原板を脱脂、酸洗後、ワット浴を用いてNiめっきを施し、Niめっき鋼板を作製した。
(1-3)冷間圧延後、ワット浴を用いてNiめっきを施し、焼鈍時にNi拡散層を形成させ、Niめっき鋼板を作製した。
(1-4)冷間圧延後、焼鈍、調圧された原板を脱脂、酸洗後、フェロスタン浴を用いてSnをめっきし、Snめっき鋼板を作製した。
(1-5)冷間圧延後、焼鈍、調圧された原板を脱脂、酸洗後、フェロスタン浴を用いてSnをめっきし、その後、溶融溶錫処理(リフロー処理)を行い、Sn合金層を有するSnめっき鋼板を作製した。
(1-6)冷間圧延後、原板を脱脂、酸洗後、ワット浴を用いてNiめっきを施し、焼鈍時にNi拡散層を形成させ、脱脂、酸洗後、フェロスタン浴を用いてSnめっきを施し、その後、溶融溶錫処理を行い、Sn合金層を有するNi、Snめっき鋼板を作製した。
(1-7)冷間圧延後、焼鈍、調圧された原板を脱脂、酸洗後、硫酸-塩酸浴を用いてFe-Ni合金めっきを施し、引き続き、フェロスタン浴を用いてSnめっきを施し、その後、溶融溶錫処理(リフロー処理)を行い、Sn合金層を有するNi、Snめっき鋼板を作製した。
なお、(1-6)および(1-7)の処理を行った場合に、光学顕微鏡にて表面を観察し、島状Sn状況を評価したところ、全体的に島が形成されていることが確認された。
上記の処理により表面処理層を形成した後、以下の処理法(2-1)~(2-3)で化成皮膜を形成した。
(2-1)K2ZrF6(4.3g/L)を溶解させて硝酸アンモニウムを添加してpHを2.65に調整した処理液に、上記鋼板を浸漬し、浴温30℃で、第1表に示す条件で陰極電解して化成皮膜を形成した。
(2-2)K2ZrF6(4.3g/L)とリン酸(1.2g/L)を溶解させて硝酸アンモニウムを添加してpHを2.65に調整した処理液に、上記鋼板を浸漬し、浴温30℃で、第1表に示す条件で陰極電解して化成皮膜を形成した。
(2-3)K2ZrF6(4.3g/L)とリン酸ナトリウム(1.4g/L)とフェノール樹脂(0.7g/L)を溶解させてリン酸を添加してpHを2.65に調整した処理液に、上記鋼板を浸漬し、浴温30℃で、第1表に示す条件で陰極電解して化成皮膜を形成した。
なお、フェノール樹脂としては、上述した、N,N-ジエタノールアミン変性した水溶性フェノール樹脂(重量平均分子量:5000)を使用した。
上記の処理により化成皮膜を形成した後、以下の処理法(3-1)~(3-3)で洗浄を行った。
(3-1)75℃の水に2秒間浸漬した後、75℃で乾燥した。
(3-2)80℃の水に2秒間浸漬した後、75℃で乾燥した。
(3-3)95℃の水に2秒間浸漬した後、75℃で乾燥した。
上記の処理を行った試験材について、高フィルム密着性の評価を行った。
まず、実施例及び比較例の各試験材の両面に、厚さが20μmのPETフィルムを200℃でラミネートした後、絞りしごき加工を行って缶体を作製し、作製した缶体にネッキング加工を施してネック部を形成した。この缶体を120℃で30分間のレトルト処理を行い、ネック部におけるフィルムの剥離状況を評価した。
具体的には、剥離が全くなかったものを「◎」、実用上問題がない程度の極僅かな剥離が生じていたものを「○」、部分的に剥離が生じて実用上問題があるものを「△」、大部分で剥離が生じていたものを「×」と評価した。結果を第1表に示す。
これに対して、化成皮膜を形成した後に温度80℃以上の水での洗浄を行った実施例1~13は、いずれも高フィルム密着性に優れることが分かった。
このとき、表面処理層を有する実施例2~13は、表面処理層を有していない実施例1よりも、高フィルム密着性に優れることが分かった。
また、実施例1と実施例2とを対比すると、温度95℃の水で洗浄を行った実施例2は、温度80℃の水で洗浄を行った実施例1よりも高フィルム密着性に優れることが分かった。これは、実施例10および実施例11、ならびに、実施例12および実施例13についても、同様の傾向が見られることが分かった。
Claims (6)
- 鋼板上に、金属Zr量1~100mg/m2、F量0.1mg/m2以下である化成皮膜を有する容器用鋼板の製造方法であって、
Zrイオン、Fイオンを含む処理液中での浸漬処理または当該処理液を用いた電解処理により前記鋼板上に前記化成皮膜を形成し、次いで、前記化成皮膜が形成された前記鋼板を、温度80℃以上の水で洗浄して乾燥を行う、容器用鋼板の製造方法。 - 前記乾燥の温度が70℃以上である、請求項1に記載の容器用鋼板の製造方法。
- 前記処理液が、さらに、リン酸イオンを含み、
前記化成皮膜中のP量が、0.1~50mg/m2である、請求項1または2に記載の容器用鋼板の製造方法。 - 前記処理液が、さらに、フェノール樹脂を含み、
前記化成皮膜中のC量が、0.1~50mg/m2である、請求項3に記載の容器用鋼板の製造方法。 - 前記鋼板が、少なくとも片面に、金属Ni量で10~1000mg/m2のNiまたは金属Sn量で100~15000mg/m2のSnを含む表面処理層を有する、請求項1~4のいずれかに記載の容器用鋼板の製造方法。
- 前記鋼板は、その表面にNiめっきまたはFe-Ni合金めっきが施されて下地Ni層が形成され、前記下地Ni層上にSnめっきが施され、当該Snめっきの一部と前記下地Ni層の一部または全部とが溶融溶錫処理により合金化されて島状Snを含むSnめっき層が形成され、
前記下地Ni層は、金属Ni量で5~150mg/m2のNiを含み、
前記Snめっき層は、金属Sn量で300~3000mg/m2のSnを含む、請求項1~4のいずれかに記載の容器用鋼板の製造方法。
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