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EP0054861A1 - Process for producing a composite rubber-metal structure - Google Patents

Process for producing a composite rubber-metal structure Download PDF

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Publication number
EP0054861A1
EP0054861A1 EP81110336A EP81110336A EP0054861A1 EP 0054861 A1 EP0054861 A1 EP 0054861A1 EP 81110336 A EP81110336 A EP 81110336A EP 81110336 A EP81110336 A EP 81110336A EP 0054861 A1 EP0054861 A1 EP 0054861A1
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EP
European Patent Office
Prior art keywords
coating
baked
lacquer
rubber
metal part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81110336A
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German (de)
French (fr)
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EP0054861B1 (en
Inventor
Volker Dr. Härtel
Fritz Schreiber
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Metzeler Gimetall AG
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Metzeler Kautschuk GmbH
Metzeler Kautschuk AG
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process

Definitions

  • the invention relates to a method for producing a corrosion protection; paint coating to be burned on the metal part of a rubber / metal composite part.
  • a rubber part is then applied to this adhesive system, which is converted into rubber by vulcanization and firmly connected to the metal.
  • the baked paint layer provides the same adhesive strength as the usual metal / rubber connection; however, the adhesion to the burned-on lacquer layer is more resistant to rusting and infiltration by aqueous media, salt solutions, etc., as is particularly important for the use of such rubber / metal composite bodies in motor vehicles.
  • the lacquer layer baked at high temperatures is also sufficiently resistant to mechanical stress, such as occurs when cleaning rubber overflows with rotating brushes.
  • a disadvantage of the known method is that a uniform coating of paint cannot be achieved by spraying on the paint system; this applies in particular to the hard-to-reach areas of a metal part, as they occur in particular in the case of more complicated rubber / metal composite parts.
  • the invention is therefore based on the object of providing a method for producing a lacquer coating of the type specified, in which the disadvantages mentioned above are avoided.
  • lacquer coatings applied by electrocoating in particular cataphoretic immersion coating, have a very uniform layer thickness over the entire surface of the metal part.
  • the high grip of the cataphoretic dip coating ensures that the layer of the coating is so thin and uniform, even in hard-to-reach areas of the metal part, that even threads can be coated with the appropriate design and still retain the teaching.
  • water-soluble, precondensed epoxy ester systems are used for the cataphoretic dip coating, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea.
  • the dispenser systems are blocked; the reactions, i.e. the polyaddition and polycondensation, take place at about 250 ° C.
  • the workpiece to be coated forms the cathode, that is to say the negative pole, while additional anodes made of a special material, for example graphite, which are usually hung in dialysis boxes, serve as the positive pole; the pool itself is grounded and isolated.
  • additional anodes made of a special material for example graphite, which are usually hung in dialysis boxes, serve as the positive pole; the pool itself is grounded and isolated.
  • cataphoretic dip painting a water-insoluble lye is released in the boundary layer of the cathode, i.e. the workpiece.
  • the coagulated paint adheres to the cathode, i.e. to the workpiece.
  • the polarity reversed compared to the anaphoretic dip coating brings about a major advantage of the cataphoretic dip coating: Since the workpiece to be coated forms the cathode, in contrast to the anaphoretic dip coating, no metal ions can be released on the workpiece. Furthermore, no acidic area arises in the boundary layer, so that the generally in the pretreatment brought phosphate layer is protected against destruction; this is an essential factor for the higher corrosion resistance.
  • the metal part to be coated is first degreased and then provided with zinc phosphating with a passive rinse. This rinsing can be carried out with a solution containing Cr VI, which leads to a solidification of the phosphate layer.
  • the metal part pretreated in this way is then hung in a basin for cataphoretic dip coating and connected to the negative pole of a power source (see FIG. 2), so that the metal part serves as a cathode.
  • the anode is formed by a graphite plate arranged in the lacquer solution, which is connected to the positive pole of the power source.
  • the pool itself is grounded and isolated, as can be seen in Figure 2.
  • a water-soluble, precondensed epoxy ester system is used as the paint system, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea.
  • the dispenser systems are blocked.
  • a coating of sufficient thickness is deposited within 30 to 60 seconds, which is then baked at about 250 ° C.
  • the lacquer layer finally obtained has a thickness of about 20 / u m.
  • a commercially available adhesive system is then applied to this baked lacquer layer, which essentially consists of halogenated polymers mixed with fillers, resins and crosslinking agents. Details of the structure of such adhesive systems can be found in the above-mentioned patents.
  • a rubber part is then applied to this business system, which is firmly connected to the metal part by vulcanization.
  • the paint system with the specified structure leads to a tough, elastic, impact and abrasion-resistant coating, so that there is a substantial improvement in the corrosion resistance and the mechanical strength without any impairment of the adhesiveness.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

1. A process for the manufacture of a rubber/metal connecting piece, a) whereby a coat of lacquer is applied to the metal part of the rubber/metal connecting piece and baked into it, b) whereby the baked-in coat of lacquer is coated with an adhesion system based on halogenated polymers, and c) whereby a rubber layer is sprayed on, which is vulcanised to the rubber part, characterised in that d) the coat of lacquer is applied by means of cataphoretic dipping, and that e) the adhesion system, consisting of halogenated polymers, mixed with fillers, resins and crosslinking agents is applied directly onto the baked-in coat of lacquer.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines als'Korrosionsschutz dienenden; einzubrennenden Lacküberzugs auf dem Metallteil eines Gummi/Metall-Verbundteiles.The invention relates to a method for producing a corrosion protection; paint coating to be burned on the metal part of a rubber / metal composite part.

Der Korrosionsschutz von Gummi/Metall-Verbundteilen stellt bei vielen Anwendungsfällen ein Problem dar, da die üblichen Lackierungen keinen hinreichenden Schutz bieten und gut schützende Lackierungen im allgemeinen eingebrannt werden müssen, was sich bei fertigvulkanisierten Gummi/Metall-Verbundteilen wegen der geringen Temperaturbeständigkeit des Gummi's jedoch verbietet.The corrosion protection of rubber / metal composite parts is a problem in many applications, since the usual coatings do not offer sufficient protection and good protective coatings generally have to be baked, which is the case with fully vulcanized rubber / metal composite parts due to the low temperature resistance of the rubber forbids.

Es ist deshalb ein Verfahren zur Herstellung eines als Korrosionsschutz dienenden, einzubrennenden Lacküberzugs auf dem Metallteil eines Gummi/Metall-Verbundteils entwickelt worden, bei dem der Lacküberzug auf das Metallteil aufgesprüht und anschließend eingebrannt wird (DE-OS 2748686). Auf die eingebrannte Lackschicht wird dann ein handelsübliches Haftsystem aufgebracht, das im - wesentlichen aus halogenierten (chlorierten oder bromierten) Polymeren in Abmischung mit Füllstoffen, Harzen und Vernetzern besteht. Solche Haftsysteme werden beispielsweise in den folgenden Patentschriften erläutert:

  • US-PS 31o8635; US-PS 3099632; DE-PS 1143017; DE-PS 1719161; DE-PS 2531063 und DE-AS 2228544.
A process has therefore been developed for the production of a lacquer coating to be baked on, which serves as corrosion protection, on the metal part of a rubber / metal composite part, in which the lacquer coating is sprayed onto the metal part and then baked (DE-OS 2748686). A commercially available adhesive system is then applied to the baked paint layer, which essentially consists of halogenated (chlorinated or brominated) polymers mixed with fillers, resins and crosslinkers. Such adhesion systems are explained, for example, in the following patents:
  • U.S. Patent 31o8635; U.S. Patent 3099632; DE-PS 1143017; DE-PS 1719161; DE-PS 2531063 and DE-AS 2228544.

Auf dieses Haftsystem wird dann ein Kautschuk-Teil aufgebracht, das durch Vulkanisation in Gummi umgewandelt und fest mit dem Metall verbunden wird.A rubber part is then applied to this adhesive system, which is converted into rubber by vulcanization and firmly connected to the metal.

Die eingebrannte Lackschicht liefert die gleiche Haftfestigkeit wie die übliche Verbindung Metall/Gummi; die Haftung auf der eingebrannten Lackschicht ist jedoch beständiger gegen Unterrostung und Unterwanderung durch wässrige Medien, Salzlösungen usw., wie es insbesondere für den Einsatz solcher Gummi/Metall-Verbundkörper in Kraftfahrzeugen wesentlich ist. Die bei hohen Temperaturen eingebrannte Lackschicht ist auch hinreichend widerstandsfähig gegen mechanische Beanspruchung, wie sie etwa beim Wegputzen von Gummi-Überlauf mittels rotierender Bürsten auftritt.The baked paint layer provides the same adhesive strength as the usual metal / rubber connection; however, the adhesion to the burned-on lacquer layer is more resistant to rusting and infiltration by aqueous media, salt solutions, etc., as is particularly important for the use of such rubber / metal composite bodies in motor vehicles. The lacquer layer baked at high temperatures is also sufficiently resistant to mechanical stress, such as occurs when cleaning rubber overflows with rotating brushes.

Auch schlecht entfernterlGummi-überlauf bildet in der Lackschicht keine Schwachstelle, da,das Metallteil auch unter der Gummischicht lackiert ist und eindringendes Wasser oder Salzlösung keine Rostbildung bewirken können.Poorly remote l rubber overflow does not form a weak point in the paint layer, because the metal part is painted under the rubber layer and can cause no rust penetrating water or saline.

Nachteilig ist bei dem bekannten Verfahren jedoch, daß sich durch Aufsprühen des Lacksystems kein gleichmäßiger Lacküberzug erreichen läßt; dies gilt insbesondere für die schwer zugänglichen Stellen eines Metallteils, wie sie insbesondere bei komplizierteren Gummi/Metall-Verbundteilen auftreten.A disadvantage of the known method, however, is that a uniform coating of paint cannot be achieved by spraying on the paint system; this applies in particular to the hard-to-reach areas of a metal part, as they occur in particular in the case of more complicated rubber / metal composite parts.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Lacküberzug der angegebenen Gattung zu schaffen, bei dem die oben erwähnten Nachteile vermieden werden.The invention is therefore based on the object of providing a method for producing a lacquer coating of the type specified, in which the disadvantages mentioned above are avoided.

Insbesondere soll ein Verfahren vorgeschlagen werden, mit dem auch an schwer zugänglichen Stellen ein gleichmäßiger Lacküberzug erzeugt werden kann.In particular, a method is to be proposed with which a uniform lacquer coating can be produced even in places that are difficult to access.

Dies wird erfindungsgemäß dadurch erreicht, daß der Lacküberzug durch Elektrotauchlackieren aufgebracht wird.This is achieved according to the invention in that the lacquer coating is applied by electrocoating.

Zweckmäßige Ausführungsformen sind in den Unteransprüchen zusammengestellt.Appropriate embodiments are compiled in the subclaims.

Die mit der Erfindung erzielten Vorteile beruhen insbesondere darauf, daß die durch Elektrotauchlackierung, insbesondere kataphoretische Tauchlackierung, aufgebrachten Lacküberzüge eine sehr gleichmäßige Schichtdicke über die gesamte Oberfläche des Metallteils haben.The advantages achieved by the invention are based in particular on the fact that the lacquer coatings applied by electrocoating, in particular cataphoretic immersion coating, have a very uniform layer thickness over the entire surface of the metal part.

Der hohe Umgriff der kataphoretischen Tauchlackierung sorgt auch an schwer zugänglichen Stellen des Metallteils für eine so dünne und gleichmäßige Schichtstärke des Lacküberzugs, daß sogar Gewinde bei entsprechender Auslegung mitlackiert werden können und trotzdem lehrenhaltig bleiben.The high grip of the cataphoretic dip coating ensures that the layer of the coating is so thin and uniform, even in hard-to-reach areas of the metal part, that even threads can be coated with the appropriate design and still retain the teaching.

Dies wird mit relativ geringem apparativem Aufwand erreicht, da Tauchlackier-Anlagen mit den erforderlichen Spezifikationen im Handel erhältlich sind. Auch der wesentliche Nachteil der kataphoretischen Tauchlackierung, daß nämlich bisher nur dunkle Lacke erhältlich sind, wirkt sich bei Gummi/Metall-Verbundteilen nicht störend aus, da diese Teile im allgemeinen nicht frei zugänglich und damit nicht sichtbar sind.This is achieved with relatively little outlay in terms of equipment, since dip coating systems with the required specifications are commercially available. The main disadvantage of cataphoretic dip painting, namely that only dark paints have hitherto been available, does not have a disruptive effect on rubber / metal composite parts, since these parts are generally not freely accessible and therefore not visible.

Besonders gute Ergebnisse wurden mit der kataphoretischen Tauchlackierung erhalten, wobei nach einer bevorzugten Ausführungsform Lacksohichten mit einer Dicke von etwa 20 /u m verwendet werden. Eine solche Schicht kann in maximal einer Minute abgeschieden werden, so daß die Erzeugung der Lackschicht das Herstellungsverfahren nicht wesentlich verlängert.Particularly good results were obtained with the cataphoretic dip coating, being used in a preferred embodiment Lacksohichten having a thickness of about 20 / um. Such a layer can be deposited in a maximum of one minute, so that the production of the lacquer layer does not significantly extend the manufacturing process.

Für die kataphoretische Tauchlackierung werden nach einer bevorzugten Ausführungsform wasserlösliche, vorkondensierte Epoxiestersysteme verwendet, wobei es sich bei den Estergruppen um mit Formaldehyd reagierende Harzgruppen auf der Basis von Phenol, Melamin oder Harnstoff handelt. Die Spendersysteme sind abgeblockt; die Reaktionen, also die Polyaddition und Polykondensation, laufen bei etwa 250°C ab.According to a preferred embodiment, water-soluble, precondensed epoxy ester systems are used for the cataphoretic dip coating, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea. The dispenser systems are blocked; the reactions, i.e. the polyaddition and polycondensation, take place at about 250 ° C.

Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels unter Bezugnahme auf die beiliegenden, schematischen Zeichnungen näher erläutert: Es zeigen

  • Fig. 1 eine Darstellung des Funktionsprinzips der anaphoretischen Tauchlackierung,und
  • Fig. 2 eine Darstellung der kataphoretischen Tauchlackierung.
The invention is illustrated below with the aid of an embodiment game explained in more detail with reference to the accompanying schematic drawings: It shows
  • Fig. 1 shows the principle of operation of anaphoretic dip painting, and
  • Fig. 2 is an illustration of the cataphoretic dip painting.

Bei der Tauchlackierung werden die im Tauchlack enthaltenen Festkörper durch einen elektrochemischen Vorgang auf dem zu beschichtenden Werkzeug abgeschieden; diese Abscheidung kann nach einem der beiden folgenden Prinzipien durchgeführt werden:

  • Bei der anaphoretischen Tauchlackierung wird die Anode, d.h., der Pluspol, durch das zu beschichtende Werkstück gebildet, während das das Tauchbad enthaltende Becken als - Katode oder Minuspol dient. In einer Grenzschicht an der Anode wird eine wasserunlösliche, polymere Säure frei. In diesem Bereich koaguliert der Lack aus und setzt sich an der Anode, also dem Werkstück, fest.Dieses Funktionsprinzip ist in Figur 1 angedeutet.
In dip coating, the solids contained in the dip coating are deposited on the tool to be coated by an electrochemical process; this deposition can be carried out according to one of the following two principles:
  • In anaphoretic dip painting, the anode, ie the positive pole, is formed by the workpiece to be coated, while the pool containing the immersion bath serves as a cathode or negative pole. A water-insoluble, polymeric acid is released in a boundary layer at the anode. In this area, the paint coagulates and attaches itself to the anode, i.e. the workpiece. This functional principle is indicated in FIG. 1.

Bei der kataphoretischen Tauchlackierung bildet das zu beschichtende Werkstück die Katode, also den Minuspol, während als Pluspol zusätzliche, meist in Dialysekästen eingehängte Anoden aus einem Spezialmaterial, beispielsweise Graphit, dienen; das Becken selbst ist geerdet und isoliert. Bei der kataphoretischen Tauchlackierung wird in der Grenzschicht der Katode, d.h., des Werkstücks, eine wasserunlösliche Lauge frei. Der auskoagulierte Lack setzt sich an der Katode, d.h., am Werkstück fest.In the case of cataphoretic dip coating, the workpiece to be coated forms the cathode, that is to say the negative pole, while additional anodes made of a special material, for example graphite, which are usually hung in dialysis boxes, serve as the positive pole; the pool itself is grounded and isolated. In cataphoretic dip painting, a water-insoluble lye is released in the boundary layer of the cathode, i.e. the workpiece. The coagulated paint adheres to the cathode, i.e. to the workpiece.

Die im Vergleich zu der anaphoretischen Tauchlackierung umgekehrte Polung bewirkt einen wesentlichen Vorteil der kataphoretischen Tauchlackierung: Da das zu beschichtende Werkstück die Katode bildet, können an dem Werkstück im Gegensatz zur anaphoretischen Tauchlackierung keine Metallionen freigesetzt werden. Weiterhin entsteht in der Grenzschicht kein sauerer Bereich, so daß die im allgemeinen in der Vorbehandlung aufgebrachte Phosphatschicht gegen eine-Zerstörung geschützt ist; dies bildet einen wesentlichen Faktor für die höhere Korrosionsbeständigkeit.The polarity reversed compared to the anaphoretic dip coating brings about a major advantage of the cataphoretic dip coating: Since the workpiece to be coated forms the cathode, in contrast to the anaphoretic dip coating, no metal ions can be released on the workpiece. Furthermore, no acidic area arises in the boundary layer, so that the generally in the pretreatment brought phosphate layer is protected against destruction; this is an essential factor for the higher corrosion resistance.

Das zu beschichtende Metallteil wird zunächst entfettet und dann mit einer Zinkphosphatierung mit passivierehder Nachspülung versehen. Diese Nachspülung kann mit einer Cr Vl-haltigen Lösung erfolgen, die zu einer Verfestigung, der Phosphatschicht führt.The metal part to be coated is first degreased and then provided with zinc phosphating with a passive rinse. This rinsing can be carried out with a solution containing Cr VI, which leads to a solidification of the phosphate layer.

Das auf diese Weise vorbehandelte Metallteil wird dann zur kataphoretischen Tauchlackierung in ein Becken gehängt und an den Minuspol einer Stromquelle (sh. Figur 2) angeschlossen, so daß das Metallteil als Katode dient. Die Anode wird durch eine in der Lacklösung angeordnete Graphitplatte gebildet, die an den Pluspol der Stromquelle angeschlossen ist. Das Becken selbst ist geerdet und isoliert, wie man in Figur 2 erkennen kann.The metal part pretreated in this way is then hung in a basin for cataphoretic dip coating and connected to the negative pole of a power source (see FIG. 2), so that the metal part serves as a cathode. The anode is formed by a graphite plate arranged in the lacquer solution, which is connected to the positive pole of the power source. The pool itself is grounded and isolated, as can be seen in Figure 2.

Als Lacksystem wird ein wasserlösliches, vorkondensiertes Epoxiestersystem verwendet, wobei es sich bei den Estergruppen um mit Formaldehyd reagierende Harzgruppen auf der Basis von Phenol, Melamin oder Harnstoff handelt. Die Spendersysteme sind abgeblockt.A water-soluble, precondensed epoxy ester system is used as the paint system, the ester groups being formaldehyde-reactive resin groups based on phenol, melamine or urea. The dispenser systems are blocked.

Innerhalb von 30 bis 60 Sekunden wird eine Lackschicht ausreichender Dicke abgeschieden, die anschließend bei etwa 250°C eingebrannt wird. Die schließlich erhaltene Lackschicht hat eine Dicke von etwa 20/u m.A coating of sufficient thickness is deposited within 30 to 60 seconds, which is then baked at about 250 ° C. The lacquer layer finally obtained has a thickness of about 20 / u m.

Auf diese eingebrannte Lackschicht wird dann ein handelsübliches Haftsystem aufgebracht, das im wesentlichen aus halogenierten Polymeren in Abmischung mit Füllstoffen, Harzen und Vernetzern besteht. Einzelheiten des Aufbaus solcher Haftsysteme können den oben angegebenen Patentschriften entnommen werden.A commercially available adhesive system is then applied to this baked lacquer layer, which essentially consists of halogenated polymers mixed with fillers, resins and crosslinking agents. Details of the structure of such adhesive systems can be found in the above-mentioned patents.

Auf dieses Häftsystem wird dann ein Kautschukteil aufgebracht, das durch Vulkanisieren fest mit dem Metallteil verbunden wird. Das Lacksystem mit dem angegebenen Aufbau führt zu einer zähharten, elastischen, schlag- und abriebfesten Beschichtung, so daß sich ohne jede Beeinträchtigung der Haftfähigkeit eine wesentliche Verbesserung der Korrosionsfestigkeit und der mechanischen Festigkeit ergibt.A rubber part is then applied to this business system, which is firmly connected to the metal part by vulcanization. The paint system with the specified structure leads to a tough, elastic, impact and abrasion-resistant coating, so that there is a substantial improvement in the corrosion resistance and the mechanical strength without any impairment of the adhesiveness.

Claims (15)

1.Verfahren zur Herstellung eines als Korrosionsschutz dienenden, einzubrennenden Lacküberzuges auf dem Metallteil eines Gummi/ Metall-Verbundkörpers, dadurch gekennzeichnet, daß der Lacküberzug durch Elektrotauchlackieren aufgebracht wird.1.Procedure for the production of a corrosion protection, to be baked paint coating on the metal part of a rubber / metal composite body, characterized in that the coating is applied by electrocoating. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Lacküberzug durch kataphoretische Tauchlackierung aufgebracht wird.2. The method according to claim 1, characterized in that the lacquer coating is applied by cataphoretic dip coating. 3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Lacküberzug in einer Decke von 15 bis 25 /u m, insbesondere 20 /u m, aufgebracht wird.3. The method according to any one of claims 1 or 2, characterized in that the lacquer coating in a ceiling of 15 to 25 / um, in particular 20 / um, is applied. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Lacküberzug bei einer Temperatur von 150 bis 280 C eingebrannt wird.4. The method according to any one of claims 1 to 3, characterized in that the lacquer coating is baked at a temperature of 150 to 280 C. 5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Metallteil vor der Aufbringung des Lacküberzugs entfettet wird.5. The method according to any one of claims 1 to 4, characterized in that the metal part is degreased before the coating is applied. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Metallteil mit einer Zinkphosphatierung versehen wird.6. The method according to any one of claims 1 to 5, characterized in that the metal part is provided with zinc phosphating. 7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß als Lacksystem ein Epoxiester-Harz/Bindemittelsystem mit blockiertem Härter verwendet wird.7. The method according to any one of claims 1 to 6, characterized in that an epoxy resin / binder system with blocked hardener is used as the coating system. 8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß der Lacküberzug bei 1500C eingebrannt wird.8. The method according to claim 7, characterized in that the lacquer coating is baked at 150 0 C. 9. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß als Lacksystem ein Epoxiester-Harz/Bindemittelsystem mit einem Formaldehyd-Spender, insbesondere auf der Basis von Harnstoff-oder Melamin-Harzen, verwendet wird.9. The method according to any one of claims 1 to 6, characterized in that an epoxy ester resin / binder system with a formaldehyde dispenser, in particular based on urea or melamine resins, is used as the coating system. 10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß der Lacküberzug bei 200°C eingebrannt wird.10. The method according to claim 9, characterized in that the lacquer coating is baked at 200 ° C. 11. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß als Lacksystem ein wasserlösliches, vorkondensiertes Epoxiestersystem verwendet wird.11. The method according to any one of claims 1 to 6, characterized in that a water-soluble, precondensed epoxy ester system is used as the coating system. 12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß als Estergruppen mit Formaldehyd reagierende Harzgruppen verwendet werden.12. The method according to claim 11, characterized in that resin groups reacting with formaldehyde are used as ester groups. 13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß Harzgruppen auf der Basis von Phenol, Melamin oder Harnstoff verwendet werden.13. The method according to claim 12, characterized in that resin groups based on phenol, melamine or urea are used. 14. Verfahren nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß wasserlösliche," vorkondensierte Epoxiestersysteme mit abgeblockten Spendersystemen verwendet werden.14. The method according to any one of claims 11 to 13, characterized in that water-soluble, "precondensed epoxy ester systems are used with blocked dispenser systems. 15. Verfahren nach einem der Ansprüche llbis 14, dadurch gekenno zeichnet, daß der Lacküberzug bei etwa 250 C eingebrannt wird.15. The method according to any one of claims llbis 14, characterized gekenno characterized in that the lacquer coating is baked at about 250 C.
EP81110336A 1980-12-19 1981-12-11 Process for producing a composite rubber-metal structure Expired EP0054861B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803047992 DE3047992A1 (en) 1980-12-19 1980-12-19 METHOD FOR PRODUCING A VARNISH COATING ON THE METAL PART OF A RUBBER / METAL COMPOSITE PART
DE3047992 1980-12-19

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EP0054861A1 true EP0054861A1 (en) 1982-06-30
EP0054861B1 EP0054861B1 (en) 1986-08-20

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EP81110336A Expired EP0054861B1 (en) 1980-12-19 1981-12-11 Process for producing a composite rubber-metal structure

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CA (1) CA1148896A (en)
DE (2) DE3047992A1 (en)
ES (1) ES8301288A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515234A1 (en) * 1995-04-28 1996-10-31 Henkel Kgaa Metal parts with a corrosion protection layer
DE19640180A1 (en) * 1996-09-30 1998-04-09 Freudenberg Carl Fa Process for the production of a rubber-metal part
EP0786336A3 (en) * 1996-01-29 1998-09-02 Firma Carl Freudenberg Method of manufacturing a rubber-metal article
CN110565149A (en) * 2019-08-12 2019-12-13 东风商用车有限公司 anticorrosion method for metal part with rubber

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DE4135188A1 (en) * 1991-10-24 1993-04-29 Lucas Ind Plc Two=part component with good binding and corrosion protection - comprises of coated metal part and 2nd part with resin coating joined under pressure both parts being heated to co:cure coatings
DE19755421A1 (en) 1997-12-13 1999-06-17 Henkel Kgaa Rubber-metal composite
DE102005016607B3 (en) * 2005-04-11 2006-10-19 Trelleborg Automotive Technical Centre Gmbh Torsional vibration damper for crankshaft, has hub and oscillating ring undergoing cataphoretic painting, and spring body which is etched with solvent before pressing it into annular gap between hub and oscillating ring

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19515234A1 (en) * 1995-04-28 1996-10-31 Henkel Kgaa Metal parts with a corrosion protection layer
EP0786336A3 (en) * 1996-01-29 1998-09-02 Firma Carl Freudenberg Method of manufacturing a rubber-metal article
DE19640180A1 (en) * 1996-09-30 1998-04-09 Freudenberg Carl Fa Process for the production of a rubber-metal part
EP0832915A3 (en) * 1996-09-30 1998-08-12 Firma Carl Freudenberg Process of making rubber-metal parts
DE19640180C2 (en) * 1996-09-30 1999-07-01 Freudenberg Carl Fa Process for producing a rubber-metal part and use of the process
CN110565149A (en) * 2019-08-12 2019-12-13 东风商用车有限公司 anticorrosion method for metal part with rubber
CN110565149B (en) * 2019-08-12 2021-02-09 东风商用车有限公司 Anticorrosion method for metal part with rubber

Also Published As

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ES508091A0 (en) 1982-12-01
DE3175180D1 (en) 1986-09-25
CA1148896A (en) 1983-06-28
DE3047992A1 (en) 1982-07-15
ES8301288A1 (en) 1982-12-01
EP0054861B1 (en) 1986-08-20

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