CA2855673A1 - Method for passivation of strip black plate - Google Patents
Method for passivation of strip black plate Download PDFInfo
- Publication number
- CA2855673A1 CA2855673A1 CA 2855673 CA2855673A CA2855673A1 CA 2855673 A1 CA2855673 A1 CA 2855673A1 CA 2855673 CA2855673 CA 2855673 CA 2855673 A CA2855673 A CA 2855673A CA 2855673 A1 CA2855673 A1 CA 2855673A1
- Authority
- CA
- Canada
- Prior art keywords
- black plate
- treatment solution
- steel
- chromium
- treatment
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000002161 passivation Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000005260 corrosion Methods 0.000 claims abstract description 14
- 230000007797 corrosion Effects 0.000 claims abstract description 14
- 238000004806 packaging method and process Methods 0.000 claims abstract description 12
- 239000003973 paint Substances 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 9
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000007767 bonding agent Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- QZCLKYGREBVARF-UHFFFAOYSA-N Acetyl tributyl citrate Chemical compound CCCCOC(=O)CC(C(=O)OCCCC)(OC(C)=O)CC(=O)OCCCC QZCLKYGREBVARF-UHFFFAOYSA-N 0.000 claims description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 4
- 229920000058 polyacrylate Polymers 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920005646 polycarboxylate Polymers 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005029 tin-free steel Substances 0.000 abstract description 21
- 239000005028 tinplate Substances 0.000 abstract description 13
- 231100001261 hazardous Toxicity 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 40
- 239000010410 layer Substances 0.000 description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 17
- 239000010408 film Substances 0.000 description 12
- 239000011701 zinc Substances 0.000 description 11
- 239000010936 titanium Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000007739 conversion coating Methods 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- -1 oxo cations Chemical class 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000088 plastic resin Substances 0.000 description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000006223 plastic coating Substances 0.000 description 2
- 229920001123 polycyclohexylenedimethylene terephthalate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 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
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- KJQFBVYMGADDTQ-CVSPRKDYSA-N L-buthionine-(S,R)-sulfoximine Chemical compound CCCCS(=N)(=O)CC[C@H](N)C(O)=O KJQFBVYMGADDTQ-CVSPRKDYSA-N 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000004532 chromating Methods 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013527 degreasing agent Substances 0.000 description 1
- 238000005237 degreasing agent Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Chemical class 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012053 oil suspension Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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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
- C23C22/05—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
-
- 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
- C23C22/05—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
- C23C22/07—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 phosphates
- C23C22/08—Orthophosphates
- C23C22/18—Orthophosphates containing manganese cations
- C23C22/182—Orthophosphates containing manganese cations containing also zinc cations
-
- 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
- C23C22/05—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
-
- 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
-
- 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
- C23C22/74—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 for obtaining burned-in conversion coatings
-
- 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
- C23C22/76—Applying the liquid by spraying
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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
- C23C22/78—Pretreatment of the material to be coated
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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
- C23C22/78—Pretreatment of the material to be coated
- C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
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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
-
- 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
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
-
- 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
- C25D11/02—Anodisation
- C25D11/34—Anodisation of metals or alloys not provided for in groups C25D11/04 - C25D11/32
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
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- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention concerns a process for passivation of strip steel plate, having the following steps:
- electrochemical treatment of the black plate by passing the black plate through an electrolyte to form an inert steel surface, - rinsing the black plate, - application of an aqueous chromium-free treatment solution to at least one surface of the black plate to form a conversion layer that protects against corrosion and an adhesion layer for paints and organic coating materials.
The black plate treated in accordance with the invention is characterized by high corrosion resistance and has good bonding capacity for paints and organic coatings and therefore is very suitable as a substitute for tin-free steel (TFS or ECCS) and tinplate for the production of packagings, in particular cans. In contrast to the traditional manufacturing and passivation processes for tin-free steel and tinplate, no chromium VI, which is environmentally hazardous and hazardous to health, is used in the process in accordance with the invention.
- electrochemical treatment of the black plate by passing the black plate through an electrolyte to form an inert steel surface, - rinsing the black plate, - application of an aqueous chromium-free treatment solution to at least one surface of the black plate to form a conversion layer that protects against corrosion and an adhesion layer for paints and organic coating materials.
The black plate treated in accordance with the invention is characterized by high corrosion resistance and has good bonding capacity for paints and organic coatings and therefore is very suitable as a substitute for tin-free steel (TFS or ECCS) and tinplate for the production of packagings, in particular cans. In contrast to the traditional manufacturing and passivation processes for tin-free steel and tinplate, no chromium VI, which is environmentally hazardous and hazardous to health, is used in the process in accordance with the invention.
Description
Method for Passivation of Strip Black Plate The invention concerns a method for passivation of strip black plate, where in a first step, an inert layer is formed on the black plate surface by an electrochemical treatment of the black plate, and in an additional step, an aqueous chromium-free treatment solution is deposited on at least one surface of the black plate to form a corrosion-protective conversion layer, which additionally forms a bonding layer for paints and organic coating materials.
Passivation here is understood to mean the targeted production of a protective layer (here:
conversion layer) on the black plate that prevents or at least greatly slows the corrosion of the black plate. The invention additionally concerns the use of black plates treated in accordance with the invention as packaging steel.
There are known processes for protection of metal surfaces from corrosion, in which the metal surface is provided with a coating of another, as a rule non-noble, metal (such as zinc and chromium). For example, coating steel sheet with zinc or chromium or even with tin (which, to be sure, is a more noble metal than steel) is known. For example, tin-plated ultrafine plate (tinplate) is very widely used for production of packaging, in particular in the food area. Tinplate is characterized by very good corrosion resistance and good forming behavior as well as weldability and is therefore very well suited for production of packagings such as beverage cans.
To protect the metal coating, or the tin coating in the case of tinplate, from corrosion and to produce a good bonding base for paints and plastic coatings, conversion layers are often applied to the surface of the metal coating.
Conversion layers are understood to be very thin nonmetallic, mostly inorganic layers on a metal surface, which as a rule are produced by the chemical reaction of an aqueous treatment solution with the metal substrate. Conversion coatings guarantee, in particular in the case of ultrafine steels, a very effective corrosion protection, a very good bonding base for paints and plastics, and they reduce surface friction and wear.
Depending on the substrate one distinguishes between iron, zinc, or manganese phosphating, electrolytic phosphating, or chromate, oxalate, and anodization processes.
Chromium-containing conversion layers have proved to provide very effective corrosion protection.
In a chromating process, the metal surface is treated with an acidic, chromium(VI) ion-containing solution, in which chromium(VI) is reduced to chromium(III). A chromium-containing conversion layer that protects against corrosion is formed on the metal surface by the treatment.
Chromium(VI) compounds are, however, acutely toxic and carcinogenic.
Passivation of metal surfaces with chromium(VI)-containing substances has already been banned in the EU for applications in automobile manufacture and household appliances. For this reason, chromium-free conversion layers have been developed in the prior art. For example, processes for generation of chromium-free conversion layers on zinc and aluminum surfaces are known from WO 97/40208-A and EP 2532769 Al. Furthermore, treatment solutions for generation of chromium-free conversion layers that contain oxo cations and halogen complexes and that lead to colorless and slightly iridescent layers are described in WO 2008/119675.
Tinplate has outstanding properties as packaging material for foods and has been manufactured and processed for this purpose for many decades. However, tin, which is the corrosion-inhibiting coating in the case of tinplate, has become a relatively valuable material because of the global shortage of resources. As an alternative to tinplate, in particular for use as packaging steel, steels that have been electrolytically coated with chromium, which are called "tin-free steel" (TFS) or "electrolytic chromium coated steel" (ECCS), are known from the prior art.
These tin-free steels are characterized on the one hand by good bonding capacity for paints or organic protective coatings (for example, of PP or PET), but on the other hand have considerable disadvantages in the conduct of the coating process because of the toxic and health-threatening properties of the chromium VI-containing materials that are used for the coating.
The task of this invention therefore consists of making available a chromium-free packaging steel, which is suitable as a substitute for tin-free steel (TFS or ECCS) and as a substitute for tinplate and which in particular should be comparable to tinplate or tin-free steel both with regard to corrosion resistance and bonding capacity for paints or organic coatings.
Passivation here is understood to mean the targeted production of a protective layer (here:
conversion layer) on the black plate that prevents or at least greatly slows the corrosion of the black plate. The invention additionally concerns the use of black plates treated in accordance with the invention as packaging steel.
There are known processes for protection of metal surfaces from corrosion, in which the metal surface is provided with a coating of another, as a rule non-noble, metal (such as zinc and chromium). For example, coating steel sheet with zinc or chromium or even with tin (which, to be sure, is a more noble metal than steel) is known. For example, tin-plated ultrafine plate (tinplate) is very widely used for production of packaging, in particular in the food area. Tinplate is characterized by very good corrosion resistance and good forming behavior as well as weldability and is therefore very well suited for production of packagings such as beverage cans.
To protect the metal coating, or the tin coating in the case of tinplate, from corrosion and to produce a good bonding base for paints and plastic coatings, conversion layers are often applied to the surface of the metal coating.
Conversion layers are understood to be very thin nonmetallic, mostly inorganic layers on a metal surface, which as a rule are produced by the chemical reaction of an aqueous treatment solution with the metal substrate. Conversion coatings guarantee, in particular in the case of ultrafine steels, a very effective corrosion protection, a very good bonding base for paints and plastics, and they reduce surface friction and wear.
Depending on the substrate one distinguishes between iron, zinc, or manganese phosphating, electrolytic phosphating, or chromate, oxalate, and anodization processes.
Chromium-containing conversion layers have proved to provide very effective corrosion protection.
In a chromating process, the metal surface is treated with an acidic, chromium(VI) ion-containing solution, in which chromium(VI) is reduced to chromium(III). A chromium-containing conversion layer that protects against corrosion is formed on the metal surface by the treatment.
Chromium(VI) compounds are, however, acutely toxic and carcinogenic.
Passivation of metal surfaces with chromium(VI)-containing substances has already been banned in the EU for applications in automobile manufacture and household appliances. For this reason, chromium-free conversion layers have been developed in the prior art. For example, processes for generation of chromium-free conversion layers on zinc and aluminum surfaces are known from WO 97/40208-A and EP 2532769 Al. Furthermore, treatment solutions for generation of chromium-free conversion layers that contain oxo cations and halogen complexes and that lead to colorless and slightly iridescent layers are described in WO 2008/119675.
Tinplate has outstanding properties as packaging material for foods and has been manufactured and processed for this purpose for many decades. However, tin, which is the corrosion-inhibiting coating in the case of tinplate, has become a relatively valuable material because of the global shortage of resources. As an alternative to tinplate, in particular for use as packaging steel, steels that have been electrolytically coated with chromium, which are called "tin-free steel" (TFS) or "electrolytic chromium coated steel" (ECCS), are known from the prior art.
These tin-free steels are characterized on the one hand by good bonding capacity for paints or organic protective coatings (for example, of PP or PET), but on the other hand have considerable disadvantages in the conduct of the coating process because of the toxic and health-threatening properties of the chromium VI-containing materials that are used for the coating.
The task of this invention therefore consists of making available a chromium-free packaging steel, which is suitable as a substitute for tin-free steel (TFS or ECCS) and as a substitute for tinplate and which in particular should be comparable to tinplate or tin-free steel both with regard to corrosion resistance and bonding capacity for paints or organic coatings.
This task is solved by a process for passivation of strip black plate that has the features of Claim 1. According to this process, an uncoated black plate in strip form is used and its surface is inertized in a first process step by an electrochemical treatment, then is rinsed with water or another rinse liquid, and finally in an additional step is coated with a corrosion-resistant conversion coating by depositing an aqueous chromium-free treatment solution onto at least one surface of the black plate.
Other special embodiments of the process are defined in the dependent claims.
Cold-rolled, annealed, and rerolled or cold-finished steel strip made from an unalloyed steel with carbon content 20-1000 ppm is preferably used. The steel strip (black plate) preferably has the following properties:
= Strength: 300-1000 MPa = Elongation at break: 1-40%
= Thickness: 0.05-0.49 mm = Surface roughness: 0.1-1 pm.
The steel can be, for example, a ferritic steel or even a multiphase steel that has a plurality of structural components, in particular ferrite, martensite, bainite and/or residual austenite. Such multiphase steels are characterized by a high strength of more than 500 MPa, while at the same time having good elongation at break of more than 10%. In view of the intended use of the black plate treated in accordance with the invention as packaging steel, the steel grades defined in DIN
EN 10202:2001: "Cold-rolled packaging steel products (electrolytically tinplated and chrome plated)" are used. Among other things, analysis and mechanical characteristics of the steel are defined in this standard. The qualities in particular lie between TS230 (soft bell furnace grade, tensile strength 230 MPa) to TH620 (DO, 620 MPa).
To conduct the process in accordance with the invention, the black plate, which is in strip form, is moved at a strip speed of preferably more than 200 m/min and up to 750 m/min. First there takes place a step to form an inert layer on the surface of the black plate through an electrochemical treatment. To prepare for the electrochemical treatment, the moving black steel plate is first cleaned and in particular degreased in an optionally necessary pretreatment step, after which it is rinsed, pickled, and again rinsed. This is optionally necessary, since the cold-rolled and recrystallization-annealed black plate as a rule is post rolled or dressed after the recrystallization annealing, where, for example, in wet rerolling with a water/oil suspension or even in dry rerolling, the black plate surface becomes contaminated by oil, abraded iron, soap, and other contaminants. This contamination is remedied by the (optional) pretreatment step.
For this, the black plate is guided into a cleaning tank containing an alkaline sodium or potassium hydroxide solution. The concentration of the alkaline degreasing agent is preferably between 20 and 100 g/L at a bath temperature of 20-70 C. A degreasing of the black plate expediently takes place in two steps, where an immersion process is carried out in a first step and an electrolytic process with current densities of 2-30 A/dm2 is carried out in a second step. After the degreasing, both sides of the black plate strip are rinsed, for example, by a triple cascade rinse with 10-30 m3/h in each cascade. If necessary, oxide residues can be removed by guiding the black plate strip into additional cleaning tanks containing a salt or sulfuric acid pickling solution having a concentration of, for example, 10 to 120 g/L in two successive immersion operations, followed by an immersion rinse with an immersion dip. The temperatures of the pickling solution and the rinse water typically lie between 20 and 60 C.
After the pretreatment, a homogeneous, solid, inert steel surface is produced by means of electrochemical treatment by passing the black plate strip through an electrolyte. The electrolyte is preferably alkaline. The electrochemical, preferably alkaline, treatment of the black plate serves for inertization and for leveling out the surface properties of the steel strip before application of the conversion coating.
In the electrochemical treatment process step, the black plate strip is guided at the strip speed through an electrolyte bath while connected as the anode at a preferred current density of 2-30 A/dm2. The electrolyte is, for example, a sodium hydroxide a sodium hydroxide solution with a preferred NaOH concentration of 20-100 g/L, and in particular a sodium hydroxide bath containing a 3% NaOH solution. For example, a soda solution, in particular a 5% sodium carbonate solution (Na2CO3), can also be used as electrolyte. The bath temperatures of the electrolysis bath are expediently kept between 20 and 80 C.
After the electrochemical treatment, the black plate is rinsed with water. The rinse can take place by immersing the strip in a water tank or by spraying with water.
Demineralized water (VE), deionized water, osmosis water, or distilled water with temperatures of 20-60 C is preferably used for this. However, untreated potable water or other rinse liquids can also be used. The black plate is dried after being rinsed.
Finally, in a concluding step, a conversion layer is deposited on at least one surface of the black plate by applying an aqueous chromium-free treatment solution to the surface of the black plate that was inertized beforehand in the electrochemical treatment.
The conversion layer is expediently deposited in a no-rinse process, i.e., a rinsing is omitted after generation of the conversion layer. The aqueous chromium-free treatment solution that forms the conversion coating is applied, for example, to the surface of the black plate, for example, with an application device that comprises a roll coater, a rotary sprayer, or spray nozzles.
An application device with a rotary sprayer is preferably used for application of the aqueous treatment solution. Before application of the treatment solution, the surface of the black plate to which the conversion layer is to be applied should be as clean and dry as possible. For this reason, at least the surface of the black plate that is being coated with the conversion layer is dried with a drying device, for example an air knife. With this air knife, a laminar hot air stream is blown onto the surface of the moving strip, so that problematic foreign particles are blown off of the steel strip surface and the steel strip surface is dried.
The rotary sprayer has a plurality of spray rotors arranged side by side across the strip direction to which the aqueous treatment solution is supplied and which are set into rotation by a drive in order to spray the aqueous treatment solution by centrifugal force in the form of a fine spray jet onto the one or both surfaces of the strip and to form a wet film of the aqueous solution there.
After application of the wet film of aqueous treatment solution, it is leveled on the surface of the black plate by means of driven smoothing rollers. The smoothing rollers are expediently arranged in reference to the black plate surface(s) so that they exert only a little pressure on the wet film of aqueous treatment solution and do not squeeze out any, or at most a minimal fraction, of the applied treatment solution from the surface. The amount of treatment solutions sprayed by the rotary sprayer is appropriately adjusted so that an excess does not remain on the black plate surface. In this way, an otherwise necessary disposal or processing of the excess amount of treatment solution is no longer necessary. After leveling, the sprayed wet film it is dried so that a dry weight of the treatment substance remains on the treated surface or surfaces. Expediently, the dry weight of the treatment solution after drying is between 1 and 50 mg/m2 and preferably lies in the range of 10 to 30 mg/m2. The amount of the aqueous treatment solution delivered to the spray rotors of the rotary sprayer per unit of time is expediently matched to the strip speed.
Through this, it can be guaranteed that only the precisely required amount of fresh treatment solution in the appropriate concentration is applied as a wet film to the black plate strip by the rotary sprayer. In this way, for example, a constant application weight of wet film in the range of 2 mL/m2 to 8 mL/m2 and preferably about 5 mL/m2 per strip side can be established independent of the strip speed.
After the application of the wet film of the treatment solution, the strip is sent through a strip dryer in order to dry the wet film. After drying, there remains on the surface of the black plate, per side, a dry application weight of the thus formed conversion layer of 2 mg/m2 to 30 mg/m2.
The desired dry weight of the conversion layer can be adjusted through the amount of treatment solution delivered to the rotary sprayer per unit of time.
An advantage of this kind of application lies in the fact that only fresh treatment solution is always used and it cannot be contaminated by stripped iron through contact and recycling with the steel strip. In addition, it turned out that the process is very economical, since only the precisely required amount is applied and an excess is not required, so that excess treatment solution no longer needs to be collected. This can prevent the formation of wastewater that needs to be treated later.
Other special embodiments of the process are defined in the dependent claims.
Cold-rolled, annealed, and rerolled or cold-finished steel strip made from an unalloyed steel with carbon content 20-1000 ppm is preferably used. The steel strip (black plate) preferably has the following properties:
= Strength: 300-1000 MPa = Elongation at break: 1-40%
= Thickness: 0.05-0.49 mm = Surface roughness: 0.1-1 pm.
The steel can be, for example, a ferritic steel or even a multiphase steel that has a plurality of structural components, in particular ferrite, martensite, bainite and/or residual austenite. Such multiphase steels are characterized by a high strength of more than 500 MPa, while at the same time having good elongation at break of more than 10%. In view of the intended use of the black plate treated in accordance with the invention as packaging steel, the steel grades defined in DIN
EN 10202:2001: "Cold-rolled packaging steel products (electrolytically tinplated and chrome plated)" are used. Among other things, analysis and mechanical characteristics of the steel are defined in this standard. The qualities in particular lie between TS230 (soft bell furnace grade, tensile strength 230 MPa) to TH620 (DO, 620 MPa).
To conduct the process in accordance with the invention, the black plate, which is in strip form, is moved at a strip speed of preferably more than 200 m/min and up to 750 m/min. First there takes place a step to form an inert layer on the surface of the black plate through an electrochemical treatment. To prepare for the electrochemical treatment, the moving black steel plate is first cleaned and in particular degreased in an optionally necessary pretreatment step, after which it is rinsed, pickled, and again rinsed. This is optionally necessary, since the cold-rolled and recrystallization-annealed black plate as a rule is post rolled or dressed after the recrystallization annealing, where, for example, in wet rerolling with a water/oil suspension or even in dry rerolling, the black plate surface becomes contaminated by oil, abraded iron, soap, and other contaminants. This contamination is remedied by the (optional) pretreatment step.
For this, the black plate is guided into a cleaning tank containing an alkaline sodium or potassium hydroxide solution. The concentration of the alkaline degreasing agent is preferably between 20 and 100 g/L at a bath temperature of 20-70 C. A degreasing of the black plate expediently takes place in two steps, where an immersion process is carried out in a first step and an electrolytic process with current densities of 2-30 A/dm2 is carried out in a second step. After the degreasing, both sides of the black plate strip are rinsed, for example, by a triple cascade rinse with 10-30 m3/h in each cascade. If necessary, oxide residues can be removed by guiding the black plate strip into additional cleaning tanks containing a salt or sulfuric acid pickling solution having a concentration of, for example, 10 to 120 g/L in two successive immersion operations, followed by an immersion rinse with an immersion dip. The temperatures of the pickling solution and the rinse water typically lie between 20 and 60 C.
After the pretreatment, a homogeneous, solid, inert steel surface is produced by means of electrochemical treatment by passing the black plate strip through an electrolyte. The electrolyte is preferably alkaline. The electrochemical, preferably alkaline, treatment of the black plate serves for inertization and for leveling out the surface properties of the steel strip before application of the conversion coating.
In the electrochemical treatment process step, the black plate strip is guided at the strip speed through an electrolyte bath while connected as the anode at a preferred current density of 2-30 A/dm2. The electrolyte is, for example, a sodium hydroxide a sodium hydroxide solution with a preferred NaOH concentration of 20-100 g/L, and in particular a sodium hydroxide bath containing a 3% NaOH solution. For example, a soda solution, in particular a 5% sodium carbonate solution (Na2CO3), can also be used as electrolyte. The bath temperatures of the electrolysis bath are expediently kept between 20 and 80 C.
After the electrochemical treatment, the black plate is rinsed with water. The rinse can take place by immersing the strip in a water tank or by spraying with water.
Demineralized water (VE), deionized water, osmosis water, or distilled water with temperatures of 20-60 C is preferably used for this. However, untreated potable water or other rinse liquids can also be used. The black plate is dried after being rinsed.
Finally, in a concluding step, a conversion layer is deposited on at least one surface of the black plate by applying an aqueous chromium-free treatment solution to the surface of the black plate that was inertized beforehand in the electrochemical treatment.
The conversion layer is expediently deposited in a no-rinse process, i.e., a rinsing is omitted after generation of the conversion layer. The aqueous chromium-free treatment solution that forms the conversion coating is applied, for example, to the surface of the black plate, for example, with an application device that comprises a roll coater, a rotary sprayer, or spray nozzles.
An application device with a rotary sprayer is preferably used for application of the aqueous treatment solution. Before application of the treatment solution, the surface of the black plate to which the conversion layer is to be applied should be as clean and dry as possible. For this reason, at least the surface of the black plate that is being coated with the conversion layer is dried with a drying device, for example an air knife. With this air knife, a laminar hot air stream is blown onto the surface of the moving strip, so that problematic foreign particles are blown off of the steel strip surface and the steel strip surface is dried.
The rotary sprayer has a plurality of spray rotors arranged side by side across the strip direction to which the aqueous treatment solution is supplied and which are set into rotation by a drive in order to spray the aqueous treatment solution by centrifugal force in the form of a fine spray jet onto the one or both surfaces of the strip and to form a wet film of the aqueous solution there.
After application of the wet film of aqueous treatment solution, it is leveled on the surface of the black plate by means of driven smoothing rollers. The smoothing rollers are expediently arranged in reference to the black plate surface(s) so that they exert only a little pressure on the wet film of aqueous treatment solution and do not squeeze out any, or at most a minimal fraction, of the applied treatment solution from the surface. The amount of treatment solutions sprayed by the rotary sprayer is appropriately adjusted so that an excess does not remain on the black plate surface. In this way, an otherwise necessary disposal or processing of the excess amount of treatment solution is no longer necessary. After leveling, the sprayed wet film it is dried so that a dry weight of the treatment substance remains on the treated surface or surfaces. Expediently, the dry weight of the treatment solution after drying is between 1 and 50 mg/m2 and preferably lies in the range of 10 to 30 mg/m2. The amount of the aqueous treatment solution delivered to the spray rotors of the rotary sprayer per unit of time is expediently matched to the strip speed.
Through this, it can be guaranteed that only the precisely required amount of fresh treatment solution in the appropriate concentration is applied as a wet film to the black plate strip by the rotary sprayer. In this way, for example, a constant application weight of wet film in the range of 2 mL/m2 to 8 mL/m2 and preferably about 5 mL/m2 per strip side can be established independent of the strip speed.
After the application of the wet film of the treatment solution, the strip is sent through a strip dryer in order to dry the wet film. After drying, there remains on the surface of the black plate, per side, a dry application weight of the thus formed conversion layer of 2 mg/m2 to 30 mg/m2.
The desired dry weight of the conversion layer can be adjusted through the amount of treatment solution delivered to the rotary sprayer per unit of time.
An advantage of this kind of application lies in the fact that only fresh treatment solution is always used and it cannot be contaminated by stripped iron through contact and recycling with the steel strip. In addition, it turned out that the process is very economical, since only the precisely required amount is applied and an excess is not required, so that excess treatment solution no longer needs to be collected. This can prevent the formation of wastewater that needs to be treated later.
Alternatively, the application of the treatment solution can also take place via roll coaters through a roller application, likewise on a predried black plate surface. Roll coaters are preferably used in the lower strip speed range, and in particular at strip speeds of less than 200 m/min. Alternatively, the application can also take place by spraying the treatment solution or by immersing the strip in a bath containing the treatment solution. Since in this case the treatment solution is applied to the black plate in an excess amount, to achieve a predetermined desired application weight of the conversion layer, it is necessary to squeeze off the excess amount of the wet film, for example by means of squeeze rolls, where this can take place "wet in wet." In this process, however, the solution is not applied in a constant uniform way independent of strip speed, and the treatment solution can, moreover, become contaminated by iron and then must be refreshed and, after exceeding a contamination threshold, be disposed of.
Finally, the wet film of treatment solution applied with the described application process is dried to form a dry conversion layer. This can take place, for example, by passing the black plate through a drying oven in which the wet film is dried by hot air or IR
radiation. The drying preferably takes place at temperatures of 50-250 C. Then the surface of the dried conversion layer is lubricated or after treated with dioctyl sebacate (DOS), acetyl tributyl citrate (ATBC), butyl stearate (BSO), or polyalkylene glycol, in particular polyethylene glycol (PEG, preferably with a molecular weight of 6000 g/mol), or a combination thereof. An after treatment by lubrication with DOS, ATBC, BSO, or PEG expediently takes place electrostatically, with commercial lubricators as in the case of ECCS or tinplate, or also by means of a rotary sprayer.
The treatment solution used for the conversion coating preferably contains at least one of the following substances:
- metal components: chosen from Ti, Zr, Mn, Zn, P, and combinations thereof;
- organic components: chosen from polyacrylate, polycarboxylate and combinations thereof.
Metal and organic components can in turn be combined.
The treatment solution additionally contains at least one bonding agent for paints or organic coating materials, where the bonding agent in particular contains components of maleic acid, isophthalic acid, and cyclohexanedimethanol (CHDM), or combinations thereof.
Compositions that contain polyethylene terephthalate (PET) or polycyclohexylenedimethylene terephthalate (PCT), such as glycol-modified polyethylene terephthalate (PET-G, which contains less than about 30% CHDM) or PCTG (which contains more than about 30% CHDM), proved to be especially suitable bonding agents.
The application amounts are 1 to 50 mg/m2 for the relevant substances.
Some selected commercially available agents that are suitable for generation of conversion coatings using the process in accordance with the invention are listed below.
Trade name Important chemical Manufacturer/Distributor component Polycarboxylates BASF
EFKA 4560 Modified polyacrylates BASF
Ti, Zn, Mn phosphate Henkel Granodine 1456 Ti, Zr Henkel GTP 10861 Zn phosphate, Ti Chemetall Gardo TP
GB X4744A Mn, Ti, Zr Chemetall Gardobond (Chernetall ) GB X4591 Al Ti, Zr Chemetall GB X4744 Ti, Zr Chemetall Preferred treatment solutions for generation of the conversion layers can, for example, be composed as follows:
a) an aqueous solution that contains aluminum fluorozirconate having a mol ratio of Al:Zr:F
of (0.15 to 0.67):1:(5 to 7), where the total concentration of Al + Zr + F is 0.1 to 2.0 g/L
and the pH is adjusted to below 5, preferably 3 to 5.
Finally, the wet film of treatment solution applied with the described application process is dried to form a dry conversion layer. This can take place, for example, by passing the black plate through a drying oven in which the wet film is dried by hot air or IR
radiation. The drying preferably takes place at temperatures of 50-250 C. Then the surface of the dried conversion layer is lubricated or after treated with dioctyl sebacate (DOS), acetyl tributyl citrate (ATBC), butyl stearate (BSO), or polyalkylene glycol, in particular polyethylene glycol (PEG, preferably with a molecular weight of 6000 g/mol), or a combination thereof. An after treatment by lubrication with DOS, ATBC, BSO, or PEG expediently takes place electrostatically, with commercial lubricators as in the case of ECCS or tinplate, or also by means of a rotary sprayer.
The treatment solution used for the conversion coating preferably contains at least one of the following substances:
- metal components: chosen from Ti, Zr, Mn, Zn, P, and combinations thereof;
- organic components: chosen from polyacrylate, polycarboxylate and combinations thereof.
Metal and organic components can in turn be combined.
The treatment solution additionally contains at least one bonding agent for paints or organic coating materials, where the bonding agent in particular contains components of maleic acid, isophthalic acid, and cyclohexanedimethanol (CHDM), or combinations thereof.
Compositions that contain polyethylene terephthalate (PET) or polycyclohexylenedimethylene terephthalate (PCT), such as glycol-modified polyethylene terephthalate (PET-G, which contains less than about 30% CHDM) or PCTG (which contains more than about 30% CHDM), proved to be especially suitable bonding agents.
The application amounts are 1 to 50 mg/m2 for the relevant substances.
Some selected commercially available agents that are suitable for generation of conversion coatings using the process in accordance with the invention are listed below.
Trade name Important chemical Manufacturer/Distributor component Polycarboxylates BASF
EFKA 4560 Modified polyacrylates BASF
Ti, Zn, Mn phosphate Henkel Granodine 1456 Ti, Zr Henkel GTP 10861 Zn phosphate, Ti Chemetall Gardo TP
GB X4744A Mn, Ti, Zr Chemetall Gardobond (Chernetall ) GB X4591 Al Ti, Zr Chemetall GB X4744 Ti, Zr Chemetall Preferred treatment solutions for generation of the conversion layers can, for example, be composed as follows:
a) an aqueous solution that contains aluminum fluorozirconate having a mol ratio of Al:Zr:F
of (0.15 to 0.67):1:(5 to 7), where the total concentration of Al + Zr + F is 0.1 to 2.0 g/L
and the pH is adjusted to below 5, preferably 3 to 5.
b) an aqueous solution that essentially contains:
- 0.2 up to less than 10 g/L zinc ions, - 0.5 to 25 g/L manganese ions, and - 2 to 300 g/L phosphate ions, calculated as P205, where the zinc:manganese weight ratio of the phosphating solution is maintained in the range of 0.05:1 to 1:1.
c) an aqueous solution that contains zinc and manganese, with zinc in the range of 0.05 to g/L, manganese in the range of 0.075 to 5.2 g/L, and copper in the range of 0.008 to 0.05 g/L, and/or a total of 0.002 to 0.5 g/L hexafluoride complexes of boron, aluminum, titanium, and/or zirconium, calculated as F.
d) an aqueous solution containing at least one film-forming agent, which contains at least one water-soluble or water-dispersed polymer having an acid number in the range of 5 to 200, and at least one inorganic compound in particulate form with an average particle diameter, measured on a scanning electron microscope, in the range of 0.005 to 0.3 pm diameter, where the polymer is selected from at least one plastic resin based on acrylate, ethylene, polyesters, polyurethane, silicone polyesters, epoxide, phenol, styrene, urea formaldehyde, their derivatives, copolymers, polymers, mixtures, and/or mixed polymers, and the inorganic compound in particulate form is selected from at least one compound of aluminum, silicon, titanium, zinc, and/or zirconium.
or e) an aqueous solution containing:
i) at least one organic film forming agent, which contains at least one water-soluble or water-dispersed polymer, which is a plastic resin based on polyacrylic acid, polyacrylate, and/or polyethylene acrylic acid, or a plastic resin mixture, and/or a mixed polymer containing a plastic resin based on acrylate or polyacryl, and ii) a content of cations and/or hexa- or tetrafluoro complexes of cations selected from the group consisting of titanium, zirconium, silicon, aluminum, and boron, in the range of 0.2 to 30 g/L with respect to the content of the elemental metal.
- 0.2 up to less than 10 g/L zinc ions, - 0.5 to 25 g/L manganese ions, and - 2 to 300 g/L phosphate ions, calculated as P205, where the zinc:manganese weight ratio of the phosphating solution is maintained in the range of 0.05:1 to 1:1.
c) an aqueous solution that contains zinc and manganese, with zinc in the range of 0.05 to g/L, manganese in the range of 0.075 to 5.2 g/L, and copper in the range of 0.008 to 0.05 g/L, and/or a total of 0.002 to 0.5 g/L hexafluoride complexes of boron, aluminum, titanium, and/or zirconium, calculated as F.
d) an aqueous solution containing at least one film-forming agent, which contains at least one water-soluble or water-dispersed polymer having an acid number in the range of 5 to 200, and at least one inorganic compound in particulate form with an average particle diameter, measured on a scanning electron microscope, in the range of 0.005 to 0.3 pm diameter, where the polymer is selected from at least one plastic resin based on acrylate, ethylene, polyesters, polyurethane, silicone polyesters, epoxide, phenol, styrene, urea formaldehyde, their derivatives, copolymers, polymers, mixtures, and/or mixed polymers, and the inorganic compound in particulate form is selected from at least one compound of aluminum, silicon, titanium, zinc, and/or zirconium.
or e) an aqueous solution containing:
i) at least one organic film forming agent, which contains at least one water-soluble or water-dispersed polymer, which is a plastic resin based on polyacrylic acid, polyacrylate, and/or polyethylene acrylic acid, or a plastic resin mixture, and/or a mixed polymer containing a plastic resin based on acrylate or polyacryl, and ii) a content of cations and/or hexa- or tetrafluoro complexes of cations selected from the group consisting of titanium, zirconium, silicon, aluminum, and boron, in the range of 0.2 to 30 g/L with respect to the content of the elemental metal.
The process in accordance with the invention can be integrated into an existing coating plant, for example in a strip coating plant for production of ECCS (or TFS), without great installation costs. The strip speed in such strip coating plants typically is 80-600 m/min.
The process in accordance with the invention has the advantages of a chromium-free and thus environmentally friendly and not health-hazardous, as well as low-cost coating on traditional black plate, in particular in the fine and ultrafine steel thickness range.
Moreover, an effective savings of costs and energy is achieved through the selected application process (no-rinse process) for application of the conversion layer due to the omission of the final rinse. Additional advantages are achieved in particular through the combination of inorganic passivation and polymer-containing thin film coating. The black plates treated with the process in accordance with the invention are outstandingly suitable for production of packaging, in particular cans, and therefore can replace the tinplate and tin-free steel (TFS or ECCS) that are traditionally used as packaging steel. With regard to their corrosion resistance, these black plates are comparable to tinplate and have good adhesion properties for paints and plastic coatings, for example of PP or PET, that are comparable to tin-free steel (TFS or ECCS).
The process in accordance with the invention has the advantages of a chromium-free and thus environmentally friendly and not health-hazardous, as well as low-cost coating on traditional black plate, in particular in the fine and ultrafine steel thickness range.
Moreover, an effective savings of costs and energy is achieved through the selected application process (no-rinse process) for application of the conversion layer due to the omission of the final rinse. Additional advantages are achieved in particular through the combination of inorganic passivation and polymer-containing thin film coating. The black plates treated with the process in accordance with the invention are outstandingly suitable for production of packaging, in particular cans, and therefore can replace the tinplate and tin-free steel (TFS or ECCS) that are traditionally used as packaging steel. With regard to their corrosion resistance, these black plates are comparable to tinplate and have good adhesion properties for paints and plastic coatings, for example of PP or PET, that are comparable to tin-free steel (TFS or ECCS).
Claims (16)
1. Process for passivation of strip black plate, having the following steps:
electrochemical treatment of the black plate by passing the black plate through an electrolyte to form an inert steel surface, rinsing the black plate, application of an aqueous chromium-free treatment solution to at least one surface of the black plate to form a conversion layer that protects against corrosion and a bonding layer for paints and organic coating materials.
electrochemical treatment of the black plate by passing the black plate through an electrolyte to form an inert steel surface, rinsing the black plate, application of an aqueous chromium-free treatment solution to at least one surface of the black plate to form a conversion layer that protects against corrosion and a bonding layer for paints and organic coating materials.
2. Process as in Claim 1, in which before the electrochemical treatment, the black plate is first degreased, then rinsed, pickled, and again rinsed.
3. Process as in Claim 1 or 2, in which the black plate is dried after the application of the treatment solution in order to form a dry application weight of the treatment solution on the black plate surface.
4. Process as in one of the preceding claims, in which the electrochemical treatment takes place by guiding the black plate through an alkaline electrolyte while connecting the black plate as anode.
5. Process as in one of the preceding claims, in which the conversion layer is deposited by applying the aqueous treatment solution in a no-rinse process.
6. Process as in Claim 5, in which the aqueous treatment solution is either applied to the black plate without an excess by means of a rotary sprayer or is applied in an excess amount with a roll coater or spray nozzles and then the excess treatment solution is squeezed off with squeeze rolls.
7. Process as in Claim 3, in which the drying takes place at 50-250°C.
8. Process as in one of Claims 3-7, in which the dry applied amount of the treatment solution is subsequently treated with DOS, ATBC, BSO, or a polyalkylene glycol, in particular polyethylene glycol (PEG).
9. Process as in one of Claims 3-8, in which the dry weight of the treatment solution is between 1 mg/m2 and 50 mg/m2.
10. Process as in one of the preceding claims, in which the black plate is moved at a strip speed of at least 200 m/min.
11. Process as in one of the preceding claims, in which the black plate is a cold-rolled, annealed, and rerolled, in particular ferritic or multiphase, steel with a carbon content of 20 to 1000 ppm.
12. Process as in one of the preceding claims, in which the temperature of the electrolyte in the electrochemical treatment of the black plate is between 20 and 50°C.
13. Process as in one of the preceding claims, in which the current density in the electrochemical treatment of the black plate is between 2 and 10 A/dm2.
14. Process as in one of the preceding claims, in which the aqueous treatment solution is free of chromium and contains at least one of the following components:
metal components: selected from Ti, Zr, Mn, Zn, P. and combinations thereof;
organic components: selected from polyacrylate, polycarboxylate, and combinations thereof.
metal components: selected from Ti, Zr, Mn, Zn, P. and combinations thereof;
organic components: selected from polyacrylate, polycarboxylate, and combinations thereof.
15. Process as in Claim 1, characterized in that the treatment solution contains at least one bonding agent for paints or organic coating materials, in which the bonding agent in particular has components of maleic acid, isophthalic acid, and cyclohexanedimethanol (CHDM), or combinations thereof.
16. Use of a black plate treated by a process in accordance with the preceding claims, with a chromium-free conversion layer on at least one surface of the black plate, as packaging steel for production of packagings, in particular cans.
Applications Claiming Priority (2)
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DE102013107506.1 | 2013-07-16 | ||
DE201310107506 DE102013107506A1 (en) | 2013-07-16 | 2013-07-16 | Method for passivation of band-shaped black plate |
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CA2855673A1 true CA2855673A1 (en) | 2015-01-16 |
CA2855673C CA2855673C (en) | 2016-09-27 |
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CA2855673A Active CA2855673C (en) | 2013-07-16 | 2014-07-03 | Method for passivation of strip black plate |
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US (1) | US20150024222A1 (en) |
EP (1) | EP2826569B1 (en) |
JP (1) | JP2015028210A (en) |
CN (1) | CN104294348B (en) |
BR (1) | BR102014017368B1 (en) |
CA (1) | CA2855673C (en) |
DE (1) | DE102013107506A1 (en) |
ES (1) | ES2634870T3 (en) |
RS (1) | RS56351B1 (en) |
RU (1) | RU2663232C2 (en) |
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DE102015113878B4 (en) * | 2015-08-21 | 2023-03-16 | Thyssenkrupp Ag | Process for the thermal treatment of a black plate coated with a conversion layer |
CN105567920A (en) * | 2015-12-31 | 2016-05-11 | 芜湖市金宇石化设备有限公司 | Heat treatment agent for heat treatment of transmission shell |
CN105695698A (en) * | 2015-12-31 | 2016-06-22 | 芜湖市金宇石化设备有限公司 | Preparing method for heat treating agent for heat treatment of speed changing box shell |
DE102017117080A1 (en) * | 2017-07-28 | 2019-01-31 | Thyssenkrupp Ag | Steel sheet with a conversion layer, process for producing a conversion-coated steel sheet and treating agent for applying a conversion layer to a steel sheet |
RU2736247C1 (en) | 2017-11-28 | 2020-11-12 | ДжФЕ СТИЛ КОРПОРЕЙШН | Textured electrical steel sheet and method of its production |
EP4073288A1 (en) * | 2019-12-11 | 2022-10-19 | Salzgitter Flachstahl GmbH | Metal sheet having adhesion-promoter coating as semi-finished product for the manufacture of metal-thermoplastic composite components, and method for producing a metal sheet of this type |
DE202020100524U1 (en) * | 2020-01-31 | 2021-05-04 | Thyssenkrupp Rasselstein Gmbh | Sheet metal packaging product, in particular tinplate or electrolytically chrome-plated sheet steel |
KR102204664B1 (en) * | 2020-12-15 | 2021-01-19 | 우리하이피 주식회사 | Nano passivation treatment method of reel-to-reel metal plate and processed products, and metal plate and processed products manufactured accordingly |
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JPS5989776A (en) * | 1982-11-13 | 1984-05-24 | Sumitomo Metal Ind Ltd | Production of cold rolled steel sheet having excellent characteristic for chemical conversion |
DE4416416A1 (en) * | 1994-05-10 | 1995-11-16 | Rasselstein Ag | Coated steel foil used for packaging food |
FR2730942B1 (en) * | 1995-02-24 | 1997-05-16 | Lorraine Laminage | PROCESS FOR THE PREPARATION OF A SHEET OR A STEEL STRIP FOR THE PRODUCTION OF A BOX AND SHEET OR STEEL STRIP OBTAINED BY THIS PROCESS |
DE19615664A1 (en) | 1996-04-19 | 1997-10-23 | Surtec Produkte Und Systeme Fu | Chromium (VI) free chromate layer and process for its production |
DE19635560A1 (en) * | 1996-09-02 | 1998-03-05 | Basf Lacke & Farben | Non-porous coating of metal containers |
GB2334906A (en) * | 1998-03-02 | 1999-09-08 | British Steel Plc | Laminated metal strip |
US20040054044A1 (en) * | 2000-10-11 | 2004-03-18 | Klaus Bittner | Method for coating metallic surfaces with an aqueous composition, the aqueos composition and use of the coated substrates |
JP4054539B2 (en) * | 2001-03-07 | 2008-02-27 | 日本パーカライジング株式会社 | Method for producing metal material for plastic working having inclined two-layer lubricating film |
JP4110750B2 (en) * | 2001-06-07 | 2008-07-02 | Jfeスチール株式会社 | Organic coated steel sheet with excellent corrosion resistance and conductivity |
CN100497733C (en) * | 2003-01-31 | 2009-06-10 | 杰富意钢铁株式会社 | Black zinc-plated steel sheet |
JP2005272972A (en) * | 2004-03-26 | 2005-10-06 | Nisshin Steel Co Ltd | Method of pretreatment for coating of bright annealing-treated stainless steel sheet and bright annealing-treated stainless steel sheet for coating |
JP4487651B2 (en) * | 2004-06-22 | 2010-06-23 | 東洋製罐株式会社 | Surface-treated metal material and surface treatment method thereof, resin-coated metal material, metal can, metal lid |
US20060042726A1 (en) * | 2004-09-02 | 2006-03-02 | General Electric Company | Non-chrome passivation of steel |
DE102005045033B3 (en) * | 2005-09-21 | 2007-01-18 | Rasselstein Gmbh | Method for reducing coefficient of friction of tin- or chromium plated steel strip comprises spraying coated strip with surfactant solution while it is moving at same speed as that used during electroplating |
ES2388302T5 (en) | 2007-03-29 | 2019-10-18 | Atotech Deutschland Gmbh | Agents for manufacturing corrosion protection layers on metal surfaces |
US8673091B2 (en) * | 2007-08-03 | 2014-03-18 | Ppg Industries Ohio, Inc | Pretreatment compositions and methods for coating a metal substrate |
JP5215043B2 (en) * | 2008-06-02 | 2013-06-19 | 日本パーカライジング株式会社 | Metal surface treatment liquid and surface treatment method |
JP5380033B2 (en) * | 2008-10-09 | 2014-01-08 | Jfe建材株式会社 | Painted metal material with excellent corrosion resistance and paint adhesion |
ES2748850T3 (en) * | 2009-07-02 | 2020-03-18 | Henkel Ag & Co Kgaa | Chromium and fluorine free chemical conversion metal surface treatment solution, metal surface treatment method, and metal surface coating method |
EP2532769A1 (en) | 2011-06-10 | 2012-12-12 | Amcor Flexibles Kreuzlingen Ltd. | Method of producing a chromium-free conversion coating on a surface of an aluminium or aluminium alloy strip |
-
2013
- 2013-07-16 DE DE201310107506 patent/DE102013107506A1/en not_active Ceased
-
2014
- 2014-06-26 JP JP2014131073A patent/JP2015028210A/en active Pending
- 2014-07-03 CA CA2855673A patent/CA2855673C/en active Active
- 2014-07-03 RS RS20170926A patent/RS56351B1/en unknown
- 2014-07-03 ES ES14175621.3T patent/ES2634870T3/en active Active
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- 2014-07-10 RU RU2014128191A patent/RU2663232C2/en not_active IP Right Cessation
- 2014-07-15 BR BR102014017368-4A patent/BR102014017368B1/en not_active IP Right Cessation
- 2014-07-15 CN CN201410337358.3A patent/CN104294348B/en active Active
- 2014-07-16 US US14/332,490 patent/US20150024222A1/en not_active Abandoned
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CA2855673C (en) | 2016-09-27 |
US20150024222A1 (en) | 2015-01-22 |
BR102014017368B1 (en) | 2021-06-29 |
CN104294348B (en) | 2017-12-12 |
DE102013107506A1 (en) | 2015-01-22 |
EP2826569B1 (en) | 2017-06-21 |
ES2634870T3 (en) | 2017-09-29 |
CN104294348A (en) | 2015-01-21 |
RS56351B1 (en) | 2017-12-29 |
RU2663232C2 (en) | 2018-08-02 |
BR102014017368A2 (en) | 2015-10-06 |
RU2014128191A (en) | 2016-01-27 |
EP2826569A1 (en) | 2015-01-21 |
JP2015028210A (en) | 2015-02-12 |
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