EP0111897B1 - Verfahren zur Behandlung von Metalloberflächen, insbesondere solchen von Aluminium, Aluminiumlegierungen und Stahl, sowie hierfür geeignete wässrige Badlösungen - Google Patents
Verfahren zur Behandlung von Metalloberflächen, insbesondere solchen von Aluminium, Aluminiumlegierungen und Stahl, sowie hierfür geeignete wässrige Badlösungen Download PDFInfo
- Publication number
- EP0111897B1 EP0111897B1 EP83112610A EP83112610A EP0111897B1 EP 0111897 B1 EP0111897 B1 EP 0111897B1 EP 83112610 A EP83112610 A EP 83112610A EP 83112610 A EP83112610 A EP 83112610A EP 0111897 B1 EP0111897 B1 EP 0111897B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ions
- chromium
- iii
- aqueous bath
- metal surfaces
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 39
- 239000002184 metal Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
- 239000010959 steel Substances 0.000 title claims abstract description 8
- 239000004411 aluminium Substances 0.000 title claims description 4
- -1 fluoride ions Chemical class 0.000 claims abstract description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000470 constituent Substances 0.000 claims abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 4
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims abstract description 4
- 239000008199 coating composition Substances 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 229920001519 homopolymer Polymers 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 9
- 229920002125 Sokalan® Polymers 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 abstract description 3
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 28
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical class OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 6
- 239000011651 chromium Substances 0.000 description 5
- 229910001430 chromium ion Inorganic materials 0.000 description 5
- 238000004806 packaging method and process Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000004584 polyacrylic acid Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910021564 Chromium(III) fluoride Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- UJRBOEBOIXOEQK-UHFFFAOYSA-N oxo(oxochromiooxy)chromium hydrate Chemical compound O.O=[Cr]O[Cr]=O UJRBOEBOIXOEQK-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- FTBATIJJKIIOTP-UHFFFAOYSA-K trifluorochromium Chemical compound F[Cr](F)F FTBATIJJKIIOTP-UHFFFAOYSA-K 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
-
- 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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium
Definitions
- the invention relates to the preparation of cleaned metal surfaces, in particular of strips made of aluminum, aluminum alloys and cold-rolled steel - but also other metal surfaces - for a subsequent coating with organic coatings, in particular the manufacture of metal goods for the food packaging sector.
- Such coatings can substantially improve the surface quality, in particular with regard to corrosion protection and adhesion of subsequently applied cover layers.
- Treatment solutions containing hexavalent chromium were originally often proposed in the extensive relevant prior art. Because of the toxic nature of this compound, these processes and the rinsing water that they require require elaborate wastewater treatment.
- treatment solutions which contain hexavalent chromium and trivalent chromium salts together with film formers are described, for example, in DE-AS 1 769 582 and in DE-OS 2 903 311.
- alkali silicate is to be used as the inorganic film former.
- the second reference uses polyacrylic acid as an organic film former. Due to the content of 6-valent chromium in the aqueous bath fluids, these materials are not suitable for use in the food sector.
- DE-OS 2 711 431 describes a process for the surface treatment of metals, in particular iron, zinc and aluminum, in which the cleaned metal surface is to be wetted with an acidic aqueous solution, the chromium (III) ions; Contains phosphate ions and finely divided silica, it being possible for acetate ions, male ions, zinc ions and / or manganese ions to additionally be present in the treatment solution.
- the toxic chromium (VI) ion can be dispensed with here, but acidic dispersions containing silica and phosphate ions have the disadvantage of a limited pot life
- Japanese Patent Application 57-174,469 is referenced in “Patent Abstracts of Japan, unexamined applications •, Vol. 7, No. 19 (January 25, 1983), C Field, page 64 C 147. It was then known to use solutions containing Cr 2 O 3 , co-salts of inorganic acids, phosphoric acid, silica sol and suitable fluorides to form a chromate film on steel surfaces. After treating the surfaces with such solutions, the excess solution is removed and the steel surface is dried without rinsing.
- DE-A-3 038 699 describes aqueous acidic chromate coating solutions for the treatment of zinc, zinc alloy or cadmium surfaces which contain trivalent chromium ions as practically the only chromium ions, fluoride ions and an acid and by mixing a green trivalent chromium ion solution with a blue trivalent one Chromium ion solution can be prepared.
- the green solution containing trivalent chromium ions is obtained by reducing a solution containing hexavalent chromium.
- phosphoric acid is mentioned as a suitable acid.
- the present invention is based on the object of creating a “no-rinse” method of the type described at the outset or suitable treatment agents which do not have the disadvantages known hitherto for materials of this type and in particular for use in the food packaging sector are suitable.
- the process according to the invention is intended to produce a glossy, visually appealing finish layer on the metal surface which, for example in the subsequent overlays with clear lacquers, meets the aesthetic requirements which are particularly desired in the field of food packaging.
- the invention relates in a first embodiment to a method for treating metal surfaces, preferably aluminum, aluminum alloys and steel, in particular for a subsequent coating with coating compositions on an organic basis, the previously cleaned metal surfaces being wetted with an aqueous bath solution which contains chromium (III ) ions, fluoride ions and phosphate ions - but no chromium (VI) ions
- the method according to the invention is suitable for the surface treatment of all metals relevant here, in particular therefore ferrous metals, aluminum or aluminum alloys, zinc and / or magnesium.
- the invention is particularly suitable for the pretreatment of strips made of aluminum or aluminum alloys and cold-rolled steel for their subsequent use in the food packaging sector.
- a conventionally cleaned and rinsed metal surface for example the surface of strips of the aforementioned metals, is squeezed in any way with the aqueous treatment solution after squeezing off the water film in such a way that expediently about 2 to 20 ml per square meter of the area , preferably about 3 to 7 ml of the aqueous treatment solution.
- the content of the aforementioned active constituents of the aqueous treatment solution should continue to be within the following ranges per square meter of the metal surface: 5 to 100 mg of chromium (III) ions, 5.5 to 110 mg of fluoride ions and 6 to 125 mg of phosphate ions, and about 1 , 5 to 35 mg of the organic water-soluble or homogeneously water-dispersible film former.
- the applied liquid film is allowed to act on the metal surface for a reaction time of about 1 to 10 seconds, whereupon the film is dried and thermally treated at an elevated temperature.
- the process steps of acting on the metal surface and drying can also be summarized. After drying on the metal shell l Smile Friend a ver f ormungsstructer water-insoluble solid film with a basis weight of about 18 to 370 mg / m 2, preferably from about 50 to 250 mg / m 2 metal surface.
- the drying and / or the thermal treatment of the applied liquid film or the chemicals applied with it can take place in particular in the temperature range from approximately 50 to 300 ° C.
- Chromium (III) ions and fluoride ions are most easily introduced into the bath using chromium (III) fluoride, although the ratio of chromium (III) ions: fluoride ions is in the range from 1: 2.5 to 3.5 can fluctuate.
- the phosphate content is adjusted by adding phosphates or phosphoric acid with subsequent partial neutralization. It applies that the phosphate content based on 1 mol of chromium (III) ions is preferably in a molar ratio of 0.3 to 3.0.
- the organic film former is expediently a synthetic polymer with a sufficient content of free carboxyl groups, which is its water solubility. ensure homogeneous dispersibility in water.
- Preferred organic film formers are clearly soluble polyacrylic acids, which retain their clear solubility in particular in the pH range of the aqueous treatment baths - which is usually between 2 and 3.
- these are polyacrylic acids of a molecular weight which is not too high, for example those with molecular weights of up to about 150,000, preferably up to about 100,000.
- aqueous treatment solutions according to the invention can be applied to the pre-cleaned metal strips in any type of application which is suitable for producing a uniform, defined liquid film in the specified quantity ranges on the metal surface.
- the roller application process with two or three rollers has proven successful, but wetting of the strip by spraying or dipping with subsequent squeezing off of the excess liquid film by means of, for example, plastic-coated leveling rollers or adjustable air doctor blades can also be used.
- Both acidic and alkaline cleaners are suitable for the pretreatment of the metal surfaces to be wetted according to the invention.
- the layers obtained with the aqueous treatment solution according to the invention provide a uniform, glossy finish without discoloration of the base material.
- suitable organic coatings applied below they meet the requirements for the food packaging sector.
- Aluminum strip of the alloy AIMg 5 was first cleaned and degreased in a coil coating line. An acidic solution containing 1 g / IH 2 SO 4 , 0.2 g / l HF and 1 g / l surfactant combination was used for this. The cleaning was carried out at a temperature of 60 ° C., 8 seconds and at a spray pressure of 1.5 bar. The tape was then rinsed with warm demineralized water and the rinsing water squeezed out.
- a liquid film of 5 ml / m 2 surface was then applied with the solution according to the invention by means of roller application processes, whereby the surface per m 2 is covered with a liquid film containing 25 mg Cr 3+ , 27.5 mg F-, 31.3 mg PO 4 - and 8.75 mg of polyacrylic acid ("Acrylsol® A 1 - from Röhm & Haas, Philadelphia. USA) contains.
- the water contained in the liquid film was evaporated in a floating dryer with a circulating air temperature of 100 ° C. and a metal object temperature of approx. 50 ° C., and a water-insoluble film of 92.5 mg / m 2 was obtained on the metal surface.
- the speeds of rotation of the chemcoater rollers were set such that a liquid film of 8 ml / m 2 of belt surface was applied to a cleaned and water-rinsed aluminum belt at a belt speed of 100 m / minute by means of the application rollers of the chemcoater.
- the tape was wetted with a liquid film which contains 40 mg Cr 3+ , 44 mg F - , 50 mg PO 4 ---- and 14 mg polyacrylic acid 100% strength per m 2 of surface and, after drying, a mass per unit area of 148 mg / m 2 on the aluminum.
- the water portion of the liquid film was removed by means of a warm air dryer and then the tape was heated to an object temperature of 200 ° C. After cooling, the film obtained on the tape was wetted with 8 to 10 mg of dioctyl sebacate to improve the sliding property.
- the chemically pretreated aluminum surface thus obtained was coated with varnishes suitable for the food sector and tested for its resistance to filling goods and forming behavior. In all tests, technological values were found which, in comparison to conventional solutions and methods, achieved results which were at least equivalent, and in some cases even better, with the methods according to the invention.
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- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating With Molten Metal (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83112610T ATE23573T1 (de) | 1982-12-23 | 1983-12-15 | Verfahren zur behandlung von metalloberflaechen, insbesondere solchen von aluminium, aluminiumlegierungen und stahl, sowie hierfuer geeignete waessrige badloesungen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3247729 | 1982-12-23 | ||
DE19823247729 DE3247729A1 (de) | 1982-12-23 | 1982-12-23 | Verfahren zur behandlung von metalloberflaechen, insbesondere solchen von aluminium, aluminiumlegierungen und stahl, sowie hierfuer geeignete waessrige badloesungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0111897A1 EP0111897A1 (de) | 1984-06-27 |
EP0111897B1 true EP0111897B1 (de) | 1986-11-12 |
Family
ID=6181576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83112610A Expired EP0111897B1 (de) | 1982-12-23 | 1983-12-15 | Verfahren zur Behandlung von Metalloberflächen, insbesondere solchen von Aluminium, Aluminiumlegierungen und Stahl, sowie hierfür geeignete wässrige Badlösungen |
Country Status (13)
Country | Link |
---|---|
US (1) | US4761189A (el) |
EP (1) | EP0111897B1 (el) |
JP (1) | JPH076071B2 (el) |
AT (1) | ATE23573T1 (el) |
AU (1) | AU557724B2 (el) |
BR (1) | BR8306981A (el) |
CA (1) | CA1219790A (el) |
DE (2) | DE3247729A1 (el) |
ES (1) | ES8406563A1 (el) |
GR (1) | GR79449B (el) |
MX (1) | MX7298E (el) |
NO (1) | NO162623C (el) |
ZA (1) | ZA839574B (el) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6096772A (ja) * | 1983-10-31 | 1985-05-30 | Nippon Parkerizing Co Ltd | アルミニウム合金における化成処理の前処理方法 |
JPS61136685A (ja) * | 1984-12-07 | 1986-06-24 | Nippon Light Metal Co Ltd | 親水性耐食皮膜を形成する方法 |
NO168953C (no) * | 1986-08-27 | 1992-04-22 | Elektro Brite Gmbh | Surt kromholdig passiveringsbad for sink- eller kadmiumoverflater |
JP3239312B2 (ja) * | 1994-03-31 | 2001-12-17 | 川崎製鉄株式会社 | 耐食性に優れた電気絶縁被膜を有する電磁鋼板 |
DE4412138A1 (de) * | 1994-04-08 | 1995-10-12 | Henkel Kgaa | Chromfreies Verfahren zur No-Rinse Behandlung von Aluminium und seinen Legierungen sowie hierfür geeignete wäßrige Badlösungen |
ES2102313B1 (es) * | 1994-07-29 | 1998-04-01 | Procoat S L | Composicion anticorrosiva exenta de cromo hexavalente. |
DE4443882A1 (de) * | 1994-12-09 | 1996-06-13 | Metallgesellschaft Ag | Verfahren zum Aufbringen von Phosphatüberzügen auf Metalloberflächen |
US6224657B1 (en) * | 1998-10-13 | 2001-05-01 | Sermatech International, Inc. | Hexavalent chromium-free phosphate-bonded coatings |
JP2003147544A (ja) * | 2001-11-07 | 2003-05-21 | Nippon Parkerizing Co Ltd | 亜鉛系メッキ膜の表面処理膜、亜鉛系メッキ膜の表面処理液、及び表面処理方法 |
PL1984536T3 (pl) * | 2006-02-14 | 2012-09-28 | Henkel Ag & Co Kgaa | Kompozycje i sposoby odpornej na korozję powłoki trójwartościowego chromu do suszenia na miejscu do stosowania na powierzchniach metalicznych |
KR20090018067A (ko) * | 2006-05-10 | 2009-02-19 | 헨켈 아게 운트 코. 카게아아 | 금속 표면 상의 내부식성 코팅에 사용하기 위한 개선된 3가 크롬-함유 조성물 |
US10156016B2 (en) | 2013-03-15 | 2018-12-18 | Henkel Ag & Co. Kgaa | Trivalent chromium-containing composition for aluminum and aluminum alloys |
DE102014222024A1 (de) | 2014-10-29 | 2016-06-16 | MTU Aero Engines AG | Schlicker und Verfahren zur Herstellung einer Oxidations- und Korrosionsbeständigen Diffusionschicht |
NL2017398B1 (en) * | 2016-08-31 | 2018-03-08 | Ad Productions B V | Method of treating metal surfaces with an aqueous composition and aqueous composition |
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EP4153693A1 (en) * | 2020-05-19 | 2023-03-29 | Rhodia Operations | Polymers for metal surface treatment |
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DE1769582C3 (de) * | 1967-06-14 | 1979-12-13 | British Chrome & Chemicals Ltd., Stockton-On-Tees (Grossbritannien) | Oberflächenbehandlungsmittel für Metalle, Verfahren zu ihrer Herstellung und ihre Verwendung zum Herstellen korrosionsfester und elektrisch widerstandsfähiger Überzüge |
JPS5145604A (en) * | 1974-10-17 | 1976-04-19 | Nippon Steel Corp | Seikorono uchibarihoshuji niokeru ronaikankihoho |
US3989550A (en) * | 1975-04-21 | 1976-11-02 | Amchem Products, Inc. | Method of forming a hydrophilic coating on an aluminum surface |
JPS5337550A (en) * | 1976-09-20 | 1978-04-06 | Nippon Paint Co Ltd | Surface treating agents for aluminum or aluminum alloy and surface treating process |
ES452499A1 (es) * | 1976-10-05 | 1978-04-01 | Brugarolas Sa | Procedimiento para colmatar peliculas obtenidas por oxida- cion anodica sobre el aluminio y sus aleaciones. |
US4183772A (en) * | 1978-01-30 | 1980-01-15 | Union Carbide Corporation | Composition and method for coating metal surfaces |
US4131489A (en) * | 1978-03-31 | 1978-12-26 | Amchem Products, Inc. | Chromate conversion composition and method for coating aluminum using low concentrations of chromate, phosphate and fluoride ions |
US4171231A (en) * | 1978-04-27 | 1979-10-16 | R. O. Hull & Company, Inc. | Coating solutions of trivalent chromium for coating zinc surfaces |
US4191596A (en) * | 1978-09-06 | 1980-03-04 | Union Carbide Corporation | Method and compositions for coating aluminum |
US4263059A (en) * | 1979-12-21 | 1981-04-21 | Rohco, Inc. | Coating solutions of trivalent chromium for coating zinc and cadmium surfaces |
US4359345A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process |
US4349392A (en) * | 1981-05-20 | 1982-09-14 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process |
-
1982
- 1982-12-23 DE DE19823247729 patent/DE3247729A1/de not_active Withdrawn
-
1983
- 1983-11-18 NO NO834243A patent/NO162623C/no unknown
- 1983-11-29 CA CA000442149A patent/CA1219790A/en not_active Expired
- 1983-12-15 DE DE8383112610T patent/DE3367629D1/de not_active Expired
- 1983-12-15 AT AT83112610T patent/ATE23573T1/de active
- 1983-12-15 EP EP83112610A patent/EP0111897B1/de not_active Expired
- 1983-12-19 GR GR73277A patent/GR79449B/el unknown
- 1983-12-20 BR BR8306981A patent/BR8306981A/pt not_active IP Right Cessation
- 1983-12-21 MX MX8310946U patent/MX7298E/es unknown
- 1983-12-21 AU AU22729/83A patent/AU557724B2/en not_active Ceased
- 1983-12-22 ZA ZA839574A patent/ZA839574B/xx unknown
- 1983-12-23 ES ES528361A patent/ES8406563A1/es not_active Expired
- 1983-12-23 JP JP58252417A patent/JPH076071B2/ja not_active Expired - Lifetime
-
1987
- 1987-05-20 US US07/053,598 patent/US4761189A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, unexamined applications, C Field, Vol. 5, No. 180, 19. November 1981 THE PATENT OFFICE JAPANESE GOVERNMENT, Seite 130 C 79,Kokai-No. 56-105 486 * |
Also Published As
Publication number | Publication date |
---|---|
GR79449B (el) | 1984-10-30 |
ZA839574B (en) | 1984-08-29 |
DE3247729A1 (de) | 1984-07-05 |
NO834243L (no) | 1984-06-25 |
NO162623C (no) | 1990-01-24 |
CA1219790A (en) | 1987-03-31 |
US4761189A (en) | 1988-08-02 |
NO162623B (no) | 1989-10-16 |
JPS59133373A (ja) | 1984-07-31 |
JPH076071B2 (ja) | 1995-01-25 |
EP0111897A1 (de) | 1984-06-27 |
MX7298E (es) | 1988-04-26 |
ES528361A0 (es) | 1984-08-01 |
BR8306981A (pt) | 1984-07-31 |
ES8406563A1 (es) | 1984-08-01 |
AU2272983A (en) | 1984-06-28 |
DE3367629D1 (en) | 1987-01-02 |
AU557724B2 (en) | 1987-01-08 |
ATE23573T1 (de) | 1986-11-15 |
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