DE2152446A1 - Process and means for chemical surface treatment of metals - Google Patents
Process and means for chemical surface treatment of metalsInfo
- Publication number
- DE2152446A1 DE2152446A1 DE19712152446 DE2152446A DE2152446A1 DE 2152446 A1 DE2152446 A1 DE 2152446A1 DE 19712152446 DE19712152446 DE 19712152446 DE 2152446 A DE2152446 A DE 2152446A DE 2152446 A1 DE2152446 A1 DE 2152446A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- sulfamic acid
- solutions
- acidic
- layer
- 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.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 9
- 239000002184 metal Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 9
- 239000000126 substance Substances 0.000 title claims description 6
- 150000002739 metals Chemical class 0.000 title claims description 5
- 238000004381 surface treatment Methods 0.000 title claims description 5
- 239000000243 solution Substances 0.000 claims description 23
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 17
- 229910019142 PO4 Inorganic materials 0.000 claims description 15
- 235000021317 phosphate Nutrition 0.000 claims description 15
- 230000002378 acidificating effect Effects 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- 239000010452 phosphate Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 239000003929 acidic solution Substances 0.000 claims 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical class OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 13
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 239000008247 solid mixture Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 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
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000002826 nitrites Chemical class 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 229920000847 nonoxynol Polymers 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical class CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- C23C22/07—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
- C23C22/10—Orthophosphates containing oxidants
-
- 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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/42—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 molybdates, tungstates or vanadates containing also phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Detergent Compositions (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
METALLGESELLSCHAFT Frankfurt (M), den 20. Oktober 1971 Akti eagesellschaft Dr.Br/MMÜ Frankfurt (M)METALLGESELLSCHAFT Frankfurt (M), October 20, 1971 Akti eagesellschaft Dr.Br/MMÜ Frankfurt (M)
Haus-Nr. 6751 MHouse no. 6751 M.
Verfahren und Mittel zur chemischen Oberflächenbehandlung von MetallenProcess and means for chemical surface treatment of metals
Die Erfindung bezieht sich auf Verbesserungen bei der chemischen Oberflächenbehandlung von Metallen unter Verwendung von wäßrigen sauren Phosphatlösungen.The invention relates to improvements in the chemical surface treatment of metals using aqueous acidic phosphate solutions.
Es ist seit langem bekannt, Metalloberflächen, insbesondere Eisen, Stahl, verzinkten Stahl, Zink, Aluminium, zum Korrosionsschutz und zur Verbesserung der Lackhaftung mit Hilfe von wäßrigen Lösungen auf Basis sogenannter nichtschichtbildender Phosphate mit einem passivierenden Phosphatüberzug zu versehen. Die erhaltenen dünnen Schichten bestehen dabei aus Oxiden und Phosphaten des behandelten Metalles.It has long been known to use metal surfaces, in particular iron, steel, galvanized steel, zinc, aluminum, for corrosion protection and to improve paint adhesion with the help of aqueous solutions based on so-called non-layer-forming To provide phosphates with a passivating phosphate coating. The thin layers obtained exist from oxides and phosphates of the treated metal.
Die Überzugslösungen werden im wesentlichen unter Verwendung saurer Phosphate, deren Kationen einwertig sind, z.B. aus Dihydrogenphosphaten von Natrium, Kalium, Ammonium, organischen Resten oder deren Mischungen hergestellt. Die Lösungen werden normalerweise im pH-Bereich von etwa 3 bis 6 eingesetzt. Zur Einstellung bzw. dauernden Aufrechterhaltung des gewünschten pH-Wertes setzt man üblicherweise freie Phosphorsäure zu. Zusätzlich können die Lösungen* anorganische oder organische Beschleunigungsmittel, wie z.B. Nitrate, Nitrite, Chlorate, Molybdate, organische Nitroverbindungen, enthalten. Wenn gleichzeitig eine verstärkte Reinigungswirkung erwünscht ist, setzt man den Überzugslösungen geeignete oberflächenaktive Mittel zu. Bei Anwendung der Lösungen im Spritzverfahren empfehlen sich insbesondere schauiiarme Tenside.The coating solutions are essentially made using acidic phosphates, the cations of which are monovalent, e.g. from dihydrogen phosphates of sodium, potassium, ammonium, organic Remnants or their mixtures produced. The solutions will usually be in the pH range of about 3 to 6 used. In order to set or permanently maintain the desired pH value, free substances are usually used Phosphoric acid too. In addition, the solutions * can contain inorganic or organic accelerating agents such as nitrates, Contains nitrites, chlorates, molybdates, organic nitro compounds. If, at the same time, an increased cleaning effect is desired, suitable coating solutions are used surfactants too. When using the solutions by spraying, they are particularly recommended Low-show surfactants.
- 2 209819/0943 - 2 209819/0943
Gegenstand der Erfindung ist nun ein verbessertes Verfahren zur chemischen Oberflächenbehandlung von Metallen mit Hilfe von wäßrigen Lösungen, die saure nichtschichtbildende Phosphate, insbesondere Alkaliphosphate, sowie eine saure Komponente zur Einstellung bzw. Aufrechterhaltung des pH-Wertes und gegebenenfalls Beschleunigungsmittel und/oder oberflächenaktive Mittel enthalten und einen pH-Wert im Bereich von 3 bis 6 aufweisen, welchem dadurch gekennzeichnet ist, daß als saure Komponente zur Einstellung bzw. Aufrechterhaltung des pH-Wertes SuI-faminsäure verwendet wird.The invention now relates to an improved method for chemical surface treatment of metals with the help of aqueous solutions, the acidic non-layer-forming Phosphates, especially alkali phosphates, and an acidic component for adjusting or maintaining the pH value and, if necessary, accelerators and / or contain surface-active agents and have a pH in the range from 3 to 6, which characterized in that sulfamic acid is used as the acidic component to adjust or maintain the pH is used.
Es wurde überraschenderweise festgestellt, daß die Verwendung von Sulfaminsäure anstelle von Phosphorsäure zu einer stärkeren Reaktivität der Lösungen und zu einem verbesserten Korrosionsschutz der erhaltenen Überzüge führt. Vorzugsweise wird Sulfaminsäure in solcher Menge verwendet, daß der pH-Wert der Lösung im Bereich von 3.5 bis 4.7. liegt.It was surprisingly found that the use from sulfamic acid instead of phosphoric acid to a stronger reactivity of the solutions and to an improved Corrosion protection of the coatings obtained leads. Sulfamic acid is preferably used in such an amount that the pH of the solution is in the range from 3.5 to 4.7. lies.
Die zur Durchführung des Verfahrens verwendeten Lösungen enthalten erfindungsgemäß zweckmäßig 0.5 bis 10 Gew.-#, vorzugsweise 3 bis 6 Gew.-%, Sulfaminsäure,' bezogen auf den Gehalt an saurem nichtschichtbildenden Phosphat. Wenn die Menge Sulfaminsäure im unteren Bereich von 0.5 bis 3 Gew.-96, bezogen auf das nichtschichtbildende Phosphat, gehalten wird, kann es notwendig sein, der Lösung zusätzlich noch eine gewisse Menge freier Phosphorsäure zuzugeben, um den pH-Wert auf den gewünschten Wert zu bringen. Diese Verfahrensweise kann sich bei gewissen Behandlungslösungen anbieten, um den Gehalt an Sulfationen zu vermindern.The solutions used to perform the procedure According to the invention, advantageously contain 0.5 to 10% by weight, preferably 3 to 6% by weight, of sulfamic acid, based on the content of acidic non-layer-forming phosphate. If the amount of sulfamic acid is in the lower range from 0.5 to 3 Weight-96, based on the non-layer-forming phosphate, is kept, it may be necessary to add the solution add a certain amount of free phosphoric acid to bring the pH to the desired value. This procedure can be useful for certain treatment solutions to reduce the sulfate ion content.
Der Gehalt der Lösungen an nichtschichtbildendem Phosphat liegt im allgemeinen ejrtra zwischen 5 und 80 g/l und insbesondere zwischen 8 und 16 g/l.The non-layer-forming phosphate content of the solutions is generally ejrtra between 5 and 80 g / l and especially between 8 and 16 g / l.
- 3 209819/0943 - 3 209819/0943
Ein besonderer Vorteil der Erfindung besteht auch darin, daß die Behandlungslösungen in einfacher Weise aus festen Gemischen durch Auflösung in Wasser hergestellt werden können. Erfindungsgemäß enthalten derartige Mittel 75 bis 95 Gew.-% saures nichtschichtbildendes Phosphat, 0.4 bis 10 Gew.-?6 Sulfaminsäure, 0 bis 10 Gew.-% Beschleunigungsmittel und 0 bis 15 Gew.-% oberflächenaktives Mittel. A particular advantage of the invention is also that that the treatment solutions are prepared in a simple manner from solid mixtures by dissolving in water can. According to the invention, such agents contain 75 to 95% by weight of acid, non-layer-forming phosphate, 0.4 to 10% by weight sulfamic acid, 0 to 10% by weight accelerator, and 0 to 15% by weight surfactant.
Zur Herstellung der Behandlungslösungen durch Lösen des Gemisches in Wasser werden zweckmäßig 5 bis 90 g/l und insbesondere 10 bis 20 g/l verwendet.To prepare the treatment solutions by dissolving the mixture in water, it is expedient to use 5 to 90 g / l and in particular 10 to 20 g / l are used.
Die erfindungsgemäße Arbeitsweise kann in üblicher Weise im Tauchverfahren, in Spritzanlagen oder bei der Dampf-Strahlbehandlung unter den üblichen Bedingungen hinsichtlich Temperatur und Behandlungszeit eingesetzt werden.The procedure according to the invention can be carried out in the usual manner in immersion processes, in spray systems or in steam jet treatment can be used under the usual conditions in terms of temperature and treatment time.
■ - 4 203819/0943 ■ - 4 203819/0943
Das feste Phosphatierungsmittel hatte folgende Zusammensetzung: The solid phosphating agent had the following composition:
fcP04 90.0 Gew.-96 fc P0 4 90.0 wt. -96
Sulfaminsäure ' 4.0 Gew.-%Sulfamic acid 4.0% by weight
Äthoxiliertes Nonyl-Ethoxylated nonyl
phenol (9-10 ÄO) 6.0 Gew.-#phenol (9-10 ÄO) 6.0 wt .- #
Mit Leitungswasser (22° französischer Härte) wurde eine Behandlungslösung hergestellt, die 10 g/l der obigen Mischung enthielt. Der pH-Wert der Lösung betrug 4.1. Die Lösung wurde bei 70°C und einem Druck von 2 at Sekunden auf nicht oxidierte, leicht befettete Bleche aus kaltgewalztem Stahl gespritzt. Es wurde ein homogener Überzug von bläulich irisierender Farbe erhalten. Zum Vergleich wurden in gleicher Weise Bleche mit einer entsprechenden Lösung, bei der jedoch der pH-Wert anstelle von Sulfaminsäure mit Phosphorsäure auf den pH-Wert gebracht worden war, behandelt. Der erhaltene Überzug war gräulich mit weißlichen Stellen.A treatment solution containing 10 g / l of the above was prepared with tap water (22 ° French hardness) Mixture contained. The pH of the solution was 4.1. The solution was at 70 ° C and a pressure of 2 at Sprayed seconds onto non-oxidized, lightly greased sheets of cold-rolled steel. It became a homogeneous one Coating of bluish iridescent color preserved. For comparison, sheets with a corresponding solution, in which, however, the pH value instead of sulfamic acid had been brought to pH with phosphoric acid. The coating obtained was grayish with whitish spots.
Eine weitere feste Mischung hatte folgende Zusammensetzung:Another solid mixture had the following composition:
NaH2PO4.5 H2O 20.0 Gew.-96NaH 2 PO 4 .5 H 2 O 20.0 96% by weight
^aH2PO4 68.2 Gew.-96^ aH 2 PO 4 68.2 wt. -96
Sulfaminsäure 3-0 Gew.-%Sulfamic acid 3-0% by weight
" Natriummolybdat 0.8 Gew.-%"Sodium molybdate 0.8% by weight
Äthoxilierter C^1n Ethoxylated C ^ 1n
(ca. 10 ÄO) °~Ίυ 8.0 Gew.-%(approx. 10 ÄO) ° ~ Ίυ 8.0% by weight
Mit Leitungswasser (22° französischer Härte) wurde eine Überzugslösung hergestellt, die 15 g/l der vorstehenden Mischung enthielt. Der pH-Wert der Lösung betrug 4,4. Die Lösung wurde bei 55 - 6O0C und einem Druck von 2.5 at_A coating solution containing 15 g / l of the above mixture was prepared with tap water (22 ° French hardness). The pH of the solution was 4.4. The solution was at 55 - 6O 0 C and a pressure of 2.5 at_
209819/0943209819/0943
2 Minuten auf nicht oxidierte, leicht befettete Breche aus kaltgewalztem Stahl gespritzt. Es wurde
ein homogener, bläulicher Überzug mit besonders guter Korrosionsbeständigkeit erhalten.
Zum Vergleich wurden in gleicher Weise Bleche mit einer entsprechenden Lösung behandelt, die keine
Sulfaminsäure enthielt, sondern mit Phosphorsäure
auf einen pH-Wert von 4.4 eingestellt wurde.Sprayed 2 minutes on non-oxidized, lightly greased breakers made of cold-rolled steel. A homogeneous, bluish coating with particularly good corrosion resistance was obtained.
For comparison, metal sheets were treated in the same way with an appropriate solution which did not contain sulfamic acid but was adjusted to a pH of 4.4 with phosphoric acid.
Auf Bleche aus beiden Serien wurde nach dem Trocknen mittels Spritzpistole ein Glycerophthalatlack aufgebracht. Die lackierten Bleche wurden diagonal bis zum Grund eingeritzt und dem Salzsprühtest unterworfen. Nach 200 Std. Prüfzeit wieseh die ohne Sulfaminsäure behandelten Bleche eine durchschnittliche Rostunterwanderung von 4-5 mm auf, während diese bei den mit Sulfaminsäure behandelten Blechen nur 2.5 - 3 mm betrug.After drying, a glycerophthalate varnish was applied to metal sheets from both series using a spray gun. The painted panels were scratched diagonally down to the bottom and subjected to the salt spray test. After 200 hours The test time showed the panels treated without sulfamic acid an average rust infiltration of 4-5 mm, while this was only 2.5-3 mm for the sheets treated with sulfamic acid.
NaH2PO4 70.0 Gew.-?6NaH 2 PO 4 70.0 wt .-? 6
NaH2PO4.5 H2O 18.0 Gew.-96NaH 2 PO 4 .5 H 2 O 18.0 96% by weight
Sulfaminsäure 4.0 Gew.-96Sulfamic acid 4.0 wt. 96
p-Nitrophenol 0,2 Gew.-96p-nitrophenol 0.2 wt. 96
Äthylenoxid-Propylenoxid-Ethylene oxide propylene oxide
Kondensationsprodukt (ca. 4096 ÄO) 7.8 Gew.-96Condensation product (approx. 4096 AO) 7.8% by weight 96
NaH2PO4 88,0 Gew.-96, Sulfaminsäure 2.0 Gew.-SNaH 2 PO 4 88.0 wt. 96, sulfamic acid 2.0 wt
Phosphorsäure (100%) 3.0 Gew.-?6Phosphoric acid (100%) 3.0 wt .-? 6
Äthoxiliertee Nonylphenol *Ethoxylated nonylphenol *
(6-7 ÄO) 7.0 Gew.-96(6-7 EO) 7.0 wt. -96
209819/0943 - 6 -209819/0943 - 6 -
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Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7039194A FR2110784A5 (en) | 1970-10-30 | 1970-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2152446A1 true DE2152446A1 (en) | 1972-05-04 |
Family
ID=9063547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712152446 Pending DE2152446A1 (en) | 1970-10-30 | 1971-10-21 | Process and means for chemical surface treatment of metals |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT309944B (en) |
| BE (1) | BE767775A (en) |
| DE (1) | DE2152446A1 (en) |
| ES (1) | ES392220A1 (en) |
| FR (1) | FR2110784A5 (en) |
| GB (1) | GB1360266A (en) |
| NL (1) | NL7114923A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2632742C3 (en) * | 1976-07-21 | 1980-05-08 | Hoechst Ag, 6000 Frankfurt | Process for phosphating metals and means for producing a phosphating solution |
| DE3311738A1 (en) * | 1983-03-31 | 1984-10-04 | Metallgesellschaft Ag, 6000 Frankfurt | METHOD FOR PHOSPHATING METAL SURFACES |
| DE3325974A1 (en) * | 1983-07-19 | 1985-01-31 | Gerhard Collardin GmbH, 5000 Köln | METHODS AND UNIVERSALLY APPLICABLE MEANS FOR THE ACCELERATED APPLICATION OF PHOSPHATE COATINGS ON METAL SURFACES |
| US5891268A (en) * | 1996-12-06 | 1999-04-06 | Henkel Corporation | High coating weight iron phosphating, compositions therefor, and use of the coating formed as a lubricant carrier |
-
1970
- 1970-10-30 FR FR7039194A patent/FR2110784A5/fr not_active Expired
-
1971
- 1971-05-27 BE BE767775A patent/BE767775A/en unknown
- 1971-06-14 ES ES392220A patent/ES392220A1/en not_active Expired
- 1971-10-07 GB GB4680171A patent/GB1360266A/en not_active Expired
- 1971-10-21 DE DE19712152446 patent/DE2152446A1/en active Pending
- 1971-10-28 AT AT932471A patent/AT309944B/en not_active IP Right Cessation
- 1971-10-29 NL NL7114923A patent/NL7114923A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES392220A1 (en) | 1974-02-16 |
| FR2110784A5 (en) | 1972-06-02 |
| NL7114923A (en) | 1972-05-03 |
| BE767775A (en) | 1971-10-18 |
| GB1360266A (en) | 1974-07-17 |
| AT309944B (en) | 1972-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| OHN | Withdrawal |