EP0117599A1 - Process for activating the formation of a phosphate layer on metals, and means for carrying out the process - Google Patents

Process for activating the formation of a phosphate layer on metals, and means for carrying out the process Download PDF

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Publication number
EP0117599A1
EP0117599A1 EP19840200272 EP84200272A EP0117599A1 EP 0117599 A1 EP0117599 A1 EP 0117599A1 EP 19840200272 EP19840200272 EP 19840200272 EP 84200272 A EP84200272 A EP 84200272A EP 0117599 A1 EP0117599 A1 EP 0117599A1
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Prior art keywords
metal surfaces
phosphating
phosphate
rinse bath
brought
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German (de)
French (fr)
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Giovanni Kaiser
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Hilti AG
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Hilti AG
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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
    • 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

Definitions

  • the invention relates to methods and agents for the pretreatment of metal surfaces with the aid of aqueous pre-rinse baths containing activating agents before the subsequent phosphating.
  • Activation of a metal surface before phosphating means contacting this surface with an aqueous pre-rinse bath in which an activating agent is extremely finely dispersed as a solid phase.
  • an activating agent is extremely finely dispersed as a solid phase.
  • a number of substances have become known as activating agents.
  • a pretreatment with V has or Congressbädern that finely dispersed titanium phosphate, tertiary zinc phosphate (Hopeit) and tertiary iron (II) zinc phosphate (phosphophyllite) have been found to be suitable.
  • the layer formation in manganese phosphate solutions can be favorably influenced by pretreatment in an aqueous pre-rinse bath containing finely dispersed manganese phosphate or iron (II) manganese phosphate (hureaulite) (US Pat. No. 2,456,947, D E-PS 15 21 889, DE- PS 15 46 070 US-PS 2,310,239, US-PS 3,864,139, DE-OS 22 47 888 DE-OS 21 25 963).
  • the effectiveness of the activation relates both to the phosphating of iron and steel and of non-ferrous metals, for example zinc, zinc alloys, metals coated with zinc and zinc alloys, aluminum, aluminum alloys and metals coated with aluminum and its alloys.
  • the object of the invention is to provide a method for pretreating metal surfaces by means of a pre-rinse bath which does not have the known, in particular the aforementioned disadvantages, can be used without additional effort and remains effective over a considerably extended period of time.
  • the object is achieved by designing the method of the type mentioned at the outset in accordance with the invention in such a way that the metal surfaces are brought into contact with a pre-rinse bath which additionally contains montmorillonite.
  • a pre-rinse bath which additionally contains montmorillonite.
  • montmorillonite can be used, products with a high proportion of montmorillonite and a high degree of distribution being particularly effective.
  • bentonites have proven particularly effective.
  • the montmorillonites or bentonites should be dispersed as finely as possible in the pre-rinse baths. For this reason, the highly swellable sodium bentonites are preferably used.
  • the montmorillonite or bentonite content of the pre-rinse baths can be selected within wide limits. It is particularly advantageous to bring the metal surfaces into contact with pre-rinse baths which contain montmorillonite in an amount of 0.01 to 10 g / l.
  • the activating agent is usually dispersed in concentrations of 3 mg / l to 5 g / l.
  • alkali metal phosphates such as P yrophosphat and be co tripolyphosphate.
  • Other known additives that improve effectiveness include gelatin, polyacrylates and other organic, water-soluble polymers.
  • alkali orthophosphates and alkali carbonates can be added.
  • the pH value of the bath is adjusted usually slightly alkaline and usually is between about 7.1 and 10.
  • the pre-rinse baths can essentially be the activating agent tel, the clay mineral containing montmorillonite, in particular bentonite and others, for example the abovementioned auxiliaries, and are used as a separate treatment directly before phosphating in dipping or spraying. It is also possible to use the alkaline cleaning and degreasing bath as prewash bath, to which activating agent and bentonite as montmorillonite have been added. In the latter case, at least one water rinse step is usually switched between the combined activation and cleaning or degreasing treatment and the phosphating.
  • the method according to the invention can be used universally. It can inkphosphat réelle with Vorticianbädern based on titanium phosphate or tertiary zinc phosphate in particular in the Z, isen in the manganese phosphating with manganese phosphate Vor réellebädern based or E (II) are applied -manganphosphat.
  • the Vor Hughesbäder mentioned can simultaneously unification the function of R and take degreasing by giving them the necessary cleansing agents.
  • the inventive method is advantageous, for example in connection with P hosphatiermaschinen to improve the L ackhaf- tung, corrosion protection, sliding, and the electric insulation can be used.
  • Steel sheets were also degreased in a strongly alkaline T cleaner at 95 C and then rinsed in water.
  • sheets pretreated in this way were immersed in a manganese phosphate solution at 95 ° C. for 10 minutes: and then rinsed in water and dried.
  • the T abellencke clearly show that reduced by the Betonitzusatz the phosphate layer weight and the crystallinity of the phosphate layer and the effectiveness of the activation to be extended in time.
  • Steel sheets were electrolytically galvanized in a sulfuric acid electrolyte and, after water rinsing with the following aqueous pre-rinse bath, were sprayed for 3 seconds at 50 ° C.:
  • the mixture was then phosphated for 7 seconds at 60 ° C. while spraying with the following phosphating solution:

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  • 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)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Catalysts (AREA)

Abstract

In the pretreatment of metal surfaces by means of activator-containing aqueous prewashing baths before the subsequent phosphating, the reduction in activity is countered by contacting the metal surfaces with a prewashing bath which additionally contains montmorillonite, especially in the form of bentonite, in a quantity of 0.01 to 10 g/l. Prewashing baths which contain finely disperse titanium phosphate or finely disperse tertiary zinc phosphate are preferably used before phosphating with zinc phosphate solutions, and baths containing finely disperse tertiary manganese phosphate or finely disperse iron(II) manganese phosphate are used before phosphating with manganese phosphate solutions.

Description

Die Erfindung betrifft Verfahren und Mittel zur Vorbehandlung von Metalloberflächen mit Hilfe von Aktivierungsmittel enthaltenden wäßrigen Vorspülbädern vor der anschließenden Phosphatierung.The invention relates to methods and agents for the pretreatment of metal surfaces with the aid of aqueous pre-rinse baths containing activating agents before the subsequent phosphating.

Unter Aktivierung einer Metalloberfläche vor der Phosphatierung versteht man das Inberührungbringen dieser Oberfläche mit einem wäßrigen Vorspülbad, in dem ein Aktivierungsmittel als feste Phase äußerst fein dispergiert ist. Durch die Einschaltung einer solchen Behandlung wird die Zahl der pro Einheit Metalloberfläche während der Phosphatierung aufwachsenden Phosphatkristalle wesentlich erhöht. Gleichzeitig werden die Größe der Einzelkristalle in der fertigen Phosphatschicht zum Teil erheblich vermindert, das Flächengewicht der Phosphatschicht herabgesetzt und die Zeit, die zur Abdeckung der Metalloberfläche mit Phosphatkristallen erforderlich ist, verkürzt. Die Deutung dieses Effektes besteht darin, daß durch die Behandlung mit Aktivierungsmittel auf der Metalloberfläche zusätzlich Kristallkeime fixiert werden, von denen das Wachstum der Phosphatkristalle während der Phosphatierung ausgeht.Activation of a metal surface before phosphating means contacting this surface with an aqueous pre-rinse bath in which an activating agent is extremely finely dispersed as a solid phase. By the involvement of such treatment the number of hosphatierung per unit metal surface during the growing P P is hosphatkristalle substantially increased. At the same size are the E inzelkristalle in the finished phosphate layer partly reduced considerably reduced, the basis weight of the phosphate layer and the time hosphatkristallen for covering the metal surface with P is required shortened. The D eutung of this effect is that crystal nuclei are fixed by treatment with activating agent on the metal surface in addition, which present the growth of the phosphate crystals during phosphating.

Als Aktivierungsmittel ist eine Reihe von Stoffen bekanntgeworden. Zur Aktivierung der Phosphatierung mit Zinkphosphatlösungen hat sich eine Vorbehandlung mit Vorspülbädern, die feindispergiertes Titanphosphat, tertiäres Zinkphosphat (Hopeit) und tertiäres Eisen(II)-zinkphosphat (Phosphophyllit) enthalten, als geeignet erwiesen. Die Schichtbildung in Manganphosphatlösungen kann durch eine Vorbehandlung in einem wäßrigen Vorspülbad mit einem Gehalt an feindispergiertem Manganphosphat bzw. Eisen(II)-manganphosphat (Hureaulith) günstig beeinflußt werden (US-PS 2 456 947, DE-PS 15 21 889, DE-PS 15 46 070, US-PS 2 310 239, US-PS 3 864 139, DE-OS 22 47 888, DE-OS 21 25 963).A number of substances have become known as activating agents. To activate the phosphating with zinc phosphate solutions, a pretreatment with V has orspülbädern that finely dispersed titanium phosphate, tertiary zinc phosphate (Hopeit) and tertiary iron (II) zinc phosphate (phosphophyllite) have been found to be suitable. The layer formation in manganese phosphate solutions can be favorably influenced by pretreatment in an aqueous pre-rinse bath containing finely dispersed manganese phosphate or iron (II) manganese phosphate (hureaulite) (US Pat. No. 2,456,947, D E-PS 15 21 889, DE- PS 15 46 070 US-PS 2,310,239, US-PS 3,864,139, DE-OS 22 47 888 DE-OS 21 25 963).

Außer einer gesonderten Behandlung in einem im wesentlichen Aktivierungsmittel enthaltenden Vorspülbad ist es auch bekannt, das Aktivierungsmittel dem Reinigungs- und Entfettungsbad zuzusetzen (DE-AS 15 21 837, DE-OS 20 38 105). In diesem Fall wird dann üblicherweise vor der Phosphatierung noch eine Wasserspülung vorgenommen.In addition to a separate treatment in a pre-rinse bath essentially containing activating agent, it is also known to add the activating agent to the cleaning and degreasing bath (DE-AS 15 21 837, DE-OS 20 38 105). In this case, a water rinse is usually carried out before the phosphating.

Die Wirksamkeit der Aktivierung bezieht sich sowohl auf die Phosphatierung von Eisen und Stahl als auch von NE-Metallen, beispielsweise Zink, Zinklegierungen, mit Zink und Zinklegierungen beschichtete Metalle, Aluminium, Aluminiumlegierungen und mit Aluminium und dessen Legierungen beschichtete Metalle.The effectiveness of the activation relates both to the phosphating of iron and steel and of non-ferrous metals, for example zinc, zinc alloys, metals coated with zinc and zinc alloys, aluminum, aluminum alloys and metals coated with aluminum and its alloys.

Bei der praktischen Anwendung der Vorspülbäder zeigt sich jedoch, daß ihre Wirksamkeit im Laufe der Zeit nachläßt und neues Aktivierungsmittel zugesetzt werden muß bzw. die Vorspülbäder vollständig neu anzusetzen sind. Diese Verminderung der Wirksamkeit tritt unabhängig davon ein, ob die Bäder zwischenzeitlich für Aktivierungszwecke benutzt wurden oder nicht.In practical use of the pre-rinse baths, however, it turns out that their effectiveness wears off over time and new activating agents have to be added, or the pre-rinse baths have to be prepared from scratch. This reduction in effectiveness occurs regardless of whether the baths have been used in the meantime for activation purposes or not.

Aufgabe der Erfindung ist es, ein Verfahren zur Vorbehandlung von Metalloberflächen mittels eines Vorspülbades bereitzustellen, das die bekannten, insbesondere vorgenannten Nach-' teile nicht aufweist, ohne zusätzlichen Aufwand einsetzbar ist und über einen beträchtlich verlängerten Zeitraum wirksam bleibt.The object of the invention is to provide a method for pretreating metal surfaces by means of a pre-rinse bath which does not have the known, in particular the aforementioned disadvantages, can be used without additional effort and remains effective over a considerably extended period of time.

Die Aufgabe wird gelöst, indem das Verfahren der eingangs genannten Art entsprechend der Erfindung derart ausgestaltet wird, daß die Metalloberflächen mit einem Vorspülbad in Berührung gebracht werden, das zusätzlich Montmorillonit enthält. Namentlich können Montmorillonite enthaltende Tonmineralien verwendet werden, wobei Produkte mit einem hohen Anteil an Montmorillonit und einem hohen Verteilungsgrad besonders wirksam sind. Unter den in Wasser quellfähigen Montmorilloniten mit Schichtstrukturen haben sich besonders die Bentonite bewährt.The object is achieved by designing the method of the type mentioned at the outset in accordance with the invention in such a way that the metal surfaces are brought into contact with a pre-rinse bath which additionally contains montmorillonite. In particular, clay minerals containing montmorillonite can be used, products with a high proportion of montmorillonite and a high degree of distribution being particularly effective. Among the montmorillonites with layer structures that swell in water, bentonites have proven particularly effective.

Die Montmorillonite bzw. die Bentonite sollten möglichst fein in den Vorspülbädern dispergiert werden. Aus diesem Grunde werden bevorzugt die hochquellbaren Natrium-Bentonite verwendet. Der Montmorillonit- bzw. Bentonitgehalt der Vorspülbäder kann innerhalb weiter Grenzen gewählt werden. Besonders vorteilhaft ist es, die Metalloberflächen mit Vorspülbädern in Berührung zu bringen, die Montmorillonit in einer Menge von 0,01 bis 10 g/l enthalten.The montmorillonites or bentonites should be dispersed as finely as possible in the pre-rinse baths. For this reason, the highly swellable sodium bentonites are preferably used. The montmorillonite or bentonite content of the pre-rinse baths can be selected within wide limits. It is particularly advantageous to bring the metal surfaces into contact with pre-rinse baths which contain montmorillonite in an amount of 0.01 to 10 g / l.

Zur Herstellung der Vorspülbäder wird üblicherweise das Aktivierungsmittel in Konzentrationen von 3 mg/l bis 5 g/l dispergiert. Zur Verbesserung der Dispersionsstabilität und zur Ausschaltung des schädlichen Einflusses der Wasserhärte auf die Aktivierungswirkung können kondensierte Alkaliphosphate, z.B. Pyrophosphat und Tripolyphosphat, mitverwendet werden. Weitere bekannte, die Wirksamkeit verbessernde Zusätze sind u.a. Gelatine, Polyacrylate und andere organische, in Wasser lösliche Polymere. Ferner können, beispielsweise zur Einstellung und Stabilisierung des pH-Wertes, Alkaliorthophosphate und Alkalicarbonate zugesetzt werden. Der pH-Wert der Bäder wird üblicherweise leicht alkalisch eingestellt und liegt meist zwischen etwa 7,1 und 10.To prepare the pre-rinse baths, the activating agent is usually dispersed in concentrations of 3 mg / l to 5 g / l. To improve the dispersion stability and to eliminate the harmful influence of water hardness on the A ktivierungswirkung can condensed alkali metal phosphates, such as P yrophosphat and be co tripolyphosphate. Other known additives that improve effectiveness include gelatin, polyacrylates and other organic, water-soluble polymers. Furthermore, for example for adjusting and stabilizing the pH, alkali orthophosphates and alkali carbonates can be added. The pH value of the bath is adjusted usually slightly alkaline and usually is between about 7.1 and 10. FIG.

Die Vorspülbäder können im wesentlichen das Aktivierungsmittel, das Montmorillonit enthaltende Tonmineral, insbesondere Bentonit und weitere, z.B. die vorgenannten Hilfsmittel, enthalten und als separate Behandlung direkt vor der Phosphatierung im Tauchen oder Spritzen eingesetzt werden. Es ist ferner möglich, als Vorspülbad das alkalische Reinigungs- und Entfettungsbad zu verwenden, dem Aktivierungsmittel und als Montmorillonit Bentonit zugesetzt worden ist. Im letztgenannten Fall wird zwischen die kombinierte Aktivierungs- und Reinigungs- bzw. Entfettungsbehandlung und die Phosphatierung in der Regel mindestens noch eine Wasserspülstufe geschaltet.The pre-rinse baths can essentially be the activating agent tel, the clay mineral containing montmorillonite, in particular bentonite and others, for example the abovementioned auxiliaries, and are used as a separate treatment directly before phosphating in dipping or spraying. It is also possible to use the alkaline cleaning and degreasing bath as prewash bath, to which activating agent and bentonite as montmorillonite have been added. In the latter case, at least one water rinse step is usually switched between the combined activation and cleaning or degreasing treatment and the phosphating.

Das erfindungsgemäße Verfahren ist universell einsetzbar. Es kann insbesondere bei der Zinkphosphatierung mit Vorspülbädern auf Basis Titanphosphat oder tertiärem Zinkphosphat, bei der Manganphosphatierung mit Vorspülbädern auf Basis Manganphosphat oder Eisen(II)-manganphosphat angewendet werden. Auch können die genannten Vorspülbäder gleichzeitig die Funktion der Reinigungs- und Entfettungsbäder übernehmen, indem sie den erforderlichen Zusatz von Reinigungsmitteln erhalten.The method according to the invention can be used universally. It can inkphosphatierung with Vorspülbädern based on titanium phosphate or tertiary zinc phosphate in particular in the Z, isen in the manganese phosphating with manganese phosphate Vorspülbädern based or E (II) are applied -manganphosphat. The Vorspülbäder mentioned can simultaneously unification the function of R and take degreasing by giving them the necessary cleansing agents.

Das erfindungsgemäße Verfahren ist z.B. vorteilhaft in Verbindung mit Phosphatierverfahren zur Verbesserung der Lackhaf- tung, des Korrosionsschutzes, des Gleitens und der elektrischen Isolation einsetzbar.The inventive method is advantageous, for example in connection with P hosphatierverfahren to improve the L ackhaf- tung, corrosion protection, sliding, and the electric insulation can be used.

Das erfindungsgemäße Verfahren wird anhand der folgenden Beispiele beispielsweise und näher erläutert.The process according to the invention is explained, for example and in more detail, using the following examples.

, Beispiel 1, Example 1

Stahlbleche wurden in einem stark alkalischen Tauchreiniger bei 95 C entfettet und anschließend in Wasser gespült.Steel sheets were also degreased in a strongly alkaline T cleaner at 95 C and then rinsed in water.

Anschließend wurden sie in wäßrigen Vorspülbädern folgender Zusammensetzung zur Aktivierung der Stahloberfläche bei Raumtemperatur 1 min getaucht:

Figure imgb0001
They were then immersed in aqueous pre-rinse baths of the following composition to activate the steel surface at room temperature for 1 min:
Figure imgb0001

Zur Phosphatierung wurden so vorbehandelte Bleche 10 min bei 95°C in eine Manganphosphatlösung getaucht:

Figure imgb0002
und danach in Wasser gespült und getrocknet.For phosphating, sheets pretreated in this way were immersed in a manganese phosphate solution at 95 ° C. for 10 minutes:
Figure imgb0002
 and then rinsed in water and dried.

Die Versuchsergebnisse lassen sich folgendermaßen zusammenfassen (Tabelle 1):

Figure imgb0003
Figure imgb0004
 The test results can be summarized as follows (Table 1):
Figure imgb0003
Figure imgb0004

Die Tabellenwerte zeigen deutlich, daß durch den Betonitzusatz das Phosphatschichtgewicht und die Kristallinität der Phosphatschicht verringert und die Wirksamkeit der Aktivierung zeitlich verlängert werden.The T abellenwerte clearly show that reduced by the Betonitzusatz the phosphate layer weight and the crystallinity of the phosphate layer and the effectiveness of the activation to be extended in time.

Beispiel 2Example 2

Stahlbleche wurden in einem schwefelsauren Elektrolyten elektrolytisch verzinkt und nach Wasserspülung mit folgendem wäßrigen Vorspülbad 3 sec bei 50 °C im Spritzen behandelt:

Figure imgb0005
Steel sheets were electrolytically galvanized in a sulfuric acid electrolyte and, after water rinsing with the following aqueous pre-rinse bath, were sprayed for 3 seconds at 50 ° C.:
Figure imgb0005

Anschließend wurde 7 sec bei 60 °C im Spritzen mit nachstehender Phosphatierlösung phosphatiert:

Figure imgb0006
The mixture was then phosphated for 7 seconds at 60 ° C. while spraying with the following phosphating solution:
Figure imgb0006

Dann wurde mit Wasser gründlich gespült, passivierend nachgespült und getrocknet.Then it was rinsed thoroughly with water, rinsed passively and dried.

Die Versuchsergebnisse sind in der Tabelle 2 zusammengefaßt:

Figure imgb0007
The test results are summarized in Table 2:
Figure imgb0007

Während bei Anwendung des erfindungsgemäßen Verfahrens das Schichtgewicht innerhalb von 24 h praktishc konstant blieb, stieg es bei Verwendung des bentonitfreien Vorspülbades in diesem Zeitraum um etwa 50 % an.While the layer weight remained practically constant within 24 hours when using the method according to the invention, it increased by about 50% during this period when using the bentonite-free pre-rinse bath.

Claims (7)

1. Verfahren zur Vorbehandlung von Metalloberflächen mit Hilfe von Aktivierungsmittel enthaltenden wäßrigen Vorspülbädern vor der anschließenden Phosphatierung, dadurch gekennzeichnet, daß die Metalloberflächen mit einem Vorspülbad in Berührung gebracht werden, das zusätzlich Montmorillonit enthält.1. A process for the pretreatment of metal surfaces with the aid of aqueous pre-rinse baths containing activating agents before the subsequent phosphating, characterized in that the metal surfaces are brought into contact with a pre-rinse bath which additionally contains montmorillonite. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Metalloberflächen mit einem Vorspülbad in Berührung gebracht werden, das Montmorillonit in Form von Bentonit enthält.2. The method according to claim 1, characterized in that the metal surfaces are brought into contact with a pre-rinse bath which contains montmorillonite in the form of bentonite. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Metalloberflächen mit einem Vorspülbad in Berührung gebracht werden, das Montmorilloint in einer Menge von 0,01 bis 10 g/1 enthält.3. The method according to claim 1 or 2, characterized in that the metal surfaces are brought into contact with a pre-rinse bath, the Montmorilloint contains in an amount of 0.01 to 10 g / 1. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metalloberflächen vor der Phosphatierung mit Zinkphosphatlösungen mit einem Vorspülbad in Berührung gebracht werden, das feindisperses Titanphosphat oder feindisperses, tertiäres Zinkphosphat enthält.4. The method according to any one of claims 1 to 3, characterized in that the metal surfaces are brought into contact with a pre-rinse bath which contains finely dispersed titanium phosphate or finely dispersed, tertiary zinc phosphate before the phosphating with zinc phosphate solutions. 5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metalloberflächen vor der Phosphatierung mit Manganphosphatlösungen mit einem Vorspülbad in Berührung gebracht werden, das feindisperses, tertiäres Manganphosphat enthält.5. The method according to any one of claims 1 to 3, characterized in that the metal surfaces are brought into contact with a pre-rinse bath containing finely dispersed, tertiary manganese phosphate before phosphating with manganese phosphate solutions. 6. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metalloberflächen vor der Phosphatierung mit Manganphatlösungen mit einem Vorspülbad in Berührung gebracht werden, das feindisperses Eisen(II)-manganphosphat enthält.6. The method according to any one of claims 1 to 3, characterized in that the metal surfaces are brought into contact with a pre-rinse bath containing the finely dispersed iron (II) manganese phosphate before the phosphating with manganese phosphate solutions. 7. Mittel zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche 1 bis 6, dadurch gekennzeichnet, daß es in wäßrigem Medium, neben der Aktivierung von Metalloberflächen vor der Phosphatierung dienenden Bestandteilen, Montmorillonit, insbesondere in Form von Bentonit, vorzugsweise in einer Menge von 0,01 bis 10 g/1, enthält.7. Agent for carrying out the method according to any one of the preceding claims 1 to 6, characterized in that it contains, in addition to the activation of metal surfaces prior to the phosphating constituents, montmorillonite, in particular in the form of bentonite, preferably in an amount of 0, in an aqueous medium , 01 to 10 g / 1, contains.
EP19840200272 1983-03-01 1984-02-27 Process for activating the formation of a phosphate layer on metals, and means for carrying out the process Withdrawn EP0117599A1 (en)

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DE3307158 1983-03-01
DE19833307158 DE3307158A1 (en) 1983-03-01 1983-03-01 METHOD FOR ACTIVATING PHOSPHATE LAYER TRAINING ON METALS AND MEANS FOR CARRYING OUT SUCH METHODS

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008007A1 (en) * 1993-09-17 1995-03-23 Brent International Plc Pre-rinse for phosphating metal surfaces
EP1115566A1 (en) * 1998-07-21 2001-07-18 Henkel Corporation Conditioning metal surfaces before phosphating them
WO2002008345A1 (en) * 2000-07-26 2002-01-31 Uws Ventures Limited Corrosion inhibitors
EP1566466A1 (en) 2004-02-20 2005-08-24 Nippon Paint Co., Ltd. Surface conditioner and method of surface conditioning
EP1566465A1 (en) 2004-02-20 2005-08-24 Nippon Paint Co., Ltd. Concentrated solution for preparing a surface conditioner, surface conditioner and method of surface conditioning
WO2021175891A1 (en) 2020-03-05 2021-09-10 Atotech Deutschland Gmbh Purification of metallic objects in the presence of a liquid and layer silicate(s)
WO2022002792A1 (en) * 2020-07-01 2022-01-06 Chemetall Gmbh Improved activation agent for manganese phosphating processes

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3451334B2 (en) * 1997-03-07 2003-09-29 日本パーカライジング株式会社 Pretreatment liquid for surface conditioning before phosphate conversion treatment of metal and surface conditioning method
JP2005264326A (en) * 2004-02-20 2005-09-29 Nippon Paint Co Ltd Surface conditioner and surface conditioning method
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WO2007021024A1 (en) 2005-08-19 2007-02-22 Nippon Paint Co., Ltd. Surface-conditioning composition, method for production thereof, and surface conditioning method
DE202006009624U1 (en) * 2006-06-19 2007-10-31 Paatz Viernau Gmbh Composite stable coating

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH422468A (en) * 1960-12-02 1966-10-15 Metallgesellschaft Ag Process for phosphating iron or steel
DE1521889B1 (en) * 1966-11-30 1972-01-13 Metallgesellschaft Ag METHOD OF PHOSPHATING IRON AND STEEL
DE2247888A1 (en) * 1971-09-30 1973-04-05 Amchem Prod AGENTS FOR CLEANING AND ACTIVATING IRON AND / OR ZINC SURFACES, CONCENTRATES OF THESE AGENTS AND METHODS FOR USING THESE AGENTS
GB1463719A (en) * 1974-06-22 1977-02-09 Reckitt & Colmann Prod Ltd Metal cleaning composition
DE2821072A1 (en) * 1977-05-23 1978-12-14 Central Intertrade Finance METAL SURFACE COATING METHOD
DE3025474A1 (en) * 1979-07-06 1981-01-08 Produits Ind Cie Fse METHOD FOR MANGANIZING THE SURFACES OF STEEL AND IRON
GB2097430A (en) * 1981-04-23 1982-11-03 Armco Inc Phosphate insulative coatings

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH422468A (en) * 1960-12-02 1966-10-15 Metallgesellschaft Ag Process for phosphating iron or steel
DE1521889B1 (en) * 1966-11-30 1972-01-13 Metallgesellschaft Ag METHOD OF PHOSPHATING IRON AND STEEL
DE2247888A1 (en) * 1971-09-30 1973-04-05 Amchem Prod AGENTS FOR CLEANING AND ACTIVATING IRON AND / OR ZINC SURFACES, CONCENTRATES OF THESE AGENTS AND METHODS FOR USING THESE AGENTS
GB1463719A (en) * 1974-06-22 1977-02-09 Reckitt & Colmann Prod Ltd Metal cleaning composition
DE2821072A1 (en) * 1977-05-23 1978-12-14 Central Intertrade Finance METAL SURFACE COATING METHOD
DE3025474A1 (en) * 1979-07-06 1981-01-08 Produits Ind Cie Fse METHOD FOR MANGANIZING THE SURFACES OF STEEL AND IRON
GB2097430A (en) * 1981-04-23 1982-11-03 Armco Inc Phosphate insulative coatings

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995008007A1 (en) * 1993-09-17 1995-03-23 Brent International Plc Pre-rinse for phosphating metal surfaces
US5868873A (en) * 1993-09-17 1999-02-09 Brent International Plc Pre-rinse for phosphating metal surfaces
EP1115566A1 (en) * 1998-07-21 2001-07-18 Henkel Corporation Conditioning metal surfaces before phosphating them
EP1115566A4 (en) * 1998-07-21 2005-06-22 Henkel Corp Conditioning metal surfaces before phosphating them
EP1815974A1 (en) * 1998-07-21 2007-08-08 Henkel Kommanditgesellschaft Auf Aktien Conditioning metal surfaces before phosphating them
WO2002008345A1 (en) * 2000-07-26 2002-01-31 Uws Ventures Limited Corrosion inhibitors
EP1566466A1 (en) 2004-02-20 2005-08-24 Nippon Paint Co., Ltd. Surface conditioner and method of surface conditioning
EP1566465A1 (en) 2004-02-20 2005-08-24 Nippon Paint Co., Ltd. Concentrated solution for preparing a surface conditioner, surface conditioner and method of surface conditioning
US7208054B2 (en) 2004-02-20 2007-04-24 Nippon Paint Co., Ltd. Concentrated solution for preparing a surface conditioner, surface conditioner and method of surface conditioning
WO2021175891A1 (en) 2020-03-05 2021-09-10 Atotech Deutschland Gmbh Purification of metallic objects in the presence of a liquid and layer silicate(s)
WO2022002792A1 (en) * 2020-07-01 2022-01-06 Chemetall Gmbh Improved activation agent for manganese phosphating processes

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ES8505733A1 (en) 1985-06-01
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ES530217A0 (en) 1985-06-01
PT78169A (en) 1984-03-01
JPS59226181A (en) 1984-12-19
PT78169B (en) 1986-07-17
DE3307158A1 (en) 1984-09-06

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