EP3020852B1 - Procede de fabrication d'une surface insensible aux contaminations et aux eraflures d'un composant metallique et composant metallique en etant revetu - Google Patents

Procede de fabrication d'une surface insensible aux contaminations et aux eraflures d'un composant metallique et composant metallique en etant revetu Download PDF

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Publication number
EP3020852B1
EP3020852B1 EP15003222.5A EP15003222A EP3020852B1 EP 3020852 B1 EP3020852 B1 EP 3020852B1 EP 15003222 A EP15003222 A EP 15003222A EP 3020852 B1 EP3020852 B1 EP 3020852B1
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EP
European Patent Office
Prior art keywords
metal component
lacquer
profile
method step
layer
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Application number
EP15003222.5A
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German (de)
English (en)
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EP3020852A1 (fr
Inventor
Markus Temming
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Markus Temming Holding GmbH
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Markus Temming Holding GmbH
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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
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/08—Rinsing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/26—Anodisation of refractory metals or alloys based thereon
    • 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
    • C25D13/20—Pretreatment
    • 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
    • C25D13/22—Servicing or operating apparatus or multistep processes

Definitions

  • the invention relates to a method for producing a scratch-resistant and contamination-tolerant surface of a metal component, made of titanium or a titanium alloy, and a metal component made of titanium or a titanium alloy provided with such a surface.
  • Known processes for coloring titanium metal components consist of, for example, high-vacuum coating (PVD), coloring the parts by anodic oxidation (anodization) or by painting the metal components with colored lacquers.
  • EP 0294 610 A1 A one-step electrochemical imaging method for reproduction layers is known EP 0294 610 A1 in which an organic substance can be deposited by means of current pulses on an electrically conductive substrate in a point-like or planar manner, but in each case a closed layer is produced which completely covers the underlying substrate.
  • CN 101293460 A In another known surface decoration method for light metal materials, CN 101293460 A also, by forming an anodic oxide film and then spray coating with a lacquer layer and an additional electrophoretic coating of an engraving in this lacquer layer, a more uniform and smoother multicolor is also formed Surface coating film produced, but always covers the underlying surface over the entire surface.
  • the DE 1 521 755 A1 discloses a method of making a durable scratch resistant surface on porous anodized surfaces by closing these pores by densely bonded particles by electrophoresis.
  • PVD high vacuum coating
  • the color spectrum is very limited, as it can only produce blacks, grays and gold tones.
  • such surfaces are very fingerprint sensitive, since, for example, contact with skin body fats leads to these surfaces immediately to color changes of the metal component in the contact area, which can only be remedied by thoroughly cleaning the surface again.
  • the problem with anodic oxidation is also the very high fingerprint sensitivity of the colored surface, which is even greater than with a PVD coating.
  • Another disadvantage of anodic oxidation is the sensitivity of the surface to scratches and pressure generated in the corresponding surface Immediately leads to a permanent color change.
  • the object of the invention is to provide a method for producing a metal component made of titanium or titanium alloys with a scratch-resistant and contamination-tolerant surface and a metal component provided with such a surface.
  • the essential feature of the method according to the invention is first of all that the advantages of the hitherto known coating methods for coloring in the inventive method and in the coated metal component are retained, for example the advantage of a PVD coating that the coloring forms a bond with the metal surface, so that also a damaged color layer does not flake off.
  • the third method step makes a significant contribution to the metal component for only partial coating with a layer thickness , which is lower than the roughness of the surface of the metal component is high, is coated in a cathodic dip coating (KDL) method with a transparent paint, which extends from a profile bottom to just below the remaining profile tufts of roughness, so that no up to Can adjust profile ground extending contaminants of the surface of the metal component, since this surface is largely covered by the transparent paint. Dimensional changes of the metal component do not take place, so that its original fit remains unchanged.
  • KDL cathodic dip coating
  • the third step of the cathodic dip coating process takes place until the approximately 75% to a maximum of 98% of the surface of the metal component is coated by the profile base outwardly building with the paint layer of the transparent paint and is then canceled, so that the remaining 25% to 2% of the base material extend freely upwards from the paint, which leaves a metallic surface feeling to a person who touches the metal component, without endogenous perspiration, grease or sweat can reach the profiled ground roughness of the surface of the metal component, since this Interspace filled with the paint.
  • This paint is baked in a drying oven in a fourth process step, so that after a previous first step of pickling the metal component to a complete liberation of an oxide layer and a subsequent anodic oxidation for coloring the metal component with different interference colors, a color layer on the metal component can be generated which together with the cathodic dip coating with clear coat leads to the desired surface function of the metal component, which is scratch and contamination tolerant.
  • a matte surface of the metal component is obtained in the desired color, which is still very similar in feel to a metal surface, since when touching such a metal component only the coated profile tips of the metallic base material are felt.
  • the fingerprint sensitivity is due to the transparent varnish Completely resolved because this paint has settled on the profile base and there is a connection with the metal surface.
  • This is achieved via an electrophoretic deposition, in which a migration of colloidally dissolved paint particles and the deposition on the metal component can be accurately controlled as an electrode by applying an electrical voltage. With the precise control of this electrochemical process, minimal deposition of the paint is achieved only in the deeper areas of the surface roughness of the metal component.
  • the electrophoretic deposition of the protective coating protects the underlying oxide layer against external influences. Sweat or body fats, which would cause a change in color due to different refraction of light, can no longer penetrate through this protective coating to the profile base, so that it can be ensured that the appearance of providing such a coating metal component always remains identical. Accordingly, the transparent lacquer is a placeholder for otherwise settling there dirt and is also transparent, so that no color changes can occur when using a provided with such a surface component.
  • the lacquer is set back in relation to the profile tips only in the material troughs, it does not bear, is virtually infinitely thin and can not be scratched and / or damaged, whereby a total of one surface of a metal component is made available with a very large amount large color palette of anodising and one.
  • Strength of a PVD coating but without any fingerprint sensitivity.
  • the paint surrounds even complicated structures evenly and without runners or dripping, so that all edges and corners get a smooth course with it.
  • additional intermediate steps can be inserted between the individual process steps, each relating to rinsing operations, in particular with demineralized water, so-called demineralized water, these intermediate steps being able to take place in stationary rinses or flowing rinses and additionally the demineralised water Wetting agent can be added.
  • the first method step is preceded by a method step in which the roughening of the surface and removal of a possible oxide layer of the surface of the metal component is blasted with a coarse-grained blasting material, blasting being preferably noble corundum (EK080) or sharp-edged stainless steel (EDK080) is used.
  • a coarse-grained blasting material blasting being preferably noble corundum (EK080) or sharp-edged stainless steel (EDK080) is used.
  • EK080 noble corundum
  • EDK080 sharp-edged stainless steel
  • the surface of the metal component 1 has a roughness, with adjacent profile peaks 5 and valleys located therebetween with a profiled base 4, wherein the valley-shaped interspaces are so far felt with a transparent lacquer 3, that only the profile tips 5 continue to protrude from this lacquer layer.
  • the roughness index of the surface of the metal component 1 may be approximately N7, with an arithmetic mean roughness Ra of 1.6 and a surface roughness of approximately 10 ⁇ m.
  • the roughness indices may, however, also deviate by +/- 1, with arithmetic mean roughness values of 0.8 at N6 and 3.2 at N8 as roughness indices and with corresponding roughness depths of 4-6.3 ⁇ m or 16-25 ⁇ m.

Claims (8)

  1. Procédé de fabrication d'une surface tolérant les éraflures et les salissures d'un composant métallique en titane ou en un alliage de titane, selon lequel, lors d'une première étape de procédé pour le dégagement complet d'une couche d'oxyde, le composant métallique (1) est nettoyé dans un décapant, lors d'une deuxième étape de procédé pour la coloration, le composant métallique (1) est muni d'une couche colorée par oxydation anodique, lors d'une troisième étape de procédé pour le revêtement partiel avec une épaisseur de couche qui est inférieure à la rugosité de la surface du composant métallique (1), le composant métallique (1) est revêtu avec un vernis transparent (3) dans un procédé de vernissage par immersion cathodique, qui s'étend depuis un fond de profil (4) jusqu'en dessous des pics de profil restant exposés (5) de la rugosité et est réalisé jusqu'à ce qu'au moins 75 % à au plus 98 % de la surface soit revêtue avec un vernis (3) avec une couche de vernis se formant depuis le fond de profil (4) vers l'extérieur et, lors d'une quatrième étape de procédé pour la cuisson du vernis (3), le composant métallique (1) est chauffé dans un four de séchage.
  2. Procédé selon la revendication 1, caractérisé en ce que la cuisson du vernis (3) a lieu pendant 10 à 30 minutes à une température de 130 °C à 190 °C, notamment pendant 20 minutes à 160 °C.
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que le composant métallique (1) est rincé avec un liquide lors d'étapes intermédiaires entre deux étapes de procédé ou plus.
  4. Procédé selon la revendication 3, caractérisé en ce qu'un processus de rinçage avec de l'eau entièrement déionisée dans un rinçage statique a lieu lors d'une étape intermédiaire entre la première et la deuxième étape de procédé, puis/ou un processus de rinçage avec de l'eau entièrement déionisée dans un rinçage à écoulement lors d'une étape intermédiaire entre la première et la deuxième étape de procédé.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface du composant métallique (1) est exposée à un jet de matériau de sablage grossier lors d'une étape de procédé en amont de la première étape de procédé pour la rugosification de la surface et l'élimination d'une couche d'oxyde.
  6. Procédé selon la revendication 5, caractérisé en ce que du corindon blanc ou de l'acier inoxydable coupant est utilisé en tant que matériau de sablage.
  7. Composant métallique en titane ou en un alliage de titane, comprenant une surface tolérant les éraflures et les salissures fabriquée par un procédé selon la revendication 1, qui est munie par oxydation anodique d'une coloration sur l'ensemble de la surface, caractérisé en ce que la surface munie de la coloration est munie par vernissage par immersion cathodique d'une couche partielle d'un vernis transparent (3), qui s'étend depuis le fond de profil (4) d'un profil de rugosité de la surface du composant métallique (1) jusqu'en dessous des pics de profil (5) du profil de rugosité, qui dépassent au-dessus de la couche de vernis, et en ce que 75 % à 98 % de la surface du composant métallique (1) est revêtue avec le vernis (3).
  8. Composant métallique selon la revendication 7, caractérisé en ce que le vernis (3) est un vernis coloré.
EP15003222.5A 2014-11-11 2015-11-11 Procede de fabrication d'une surface insensible aux contaminations et aux eraflures d'un composant metallique et composant metallique en etant revetu Active EP3020852B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014116403.2A DE102014116403A1 (de) 2014-11-11 2014-11-11 Verfahren zur Herstellung einer verkratzungs- und verschmutzungstoleranten Oberfläche eines Metallbauteils und damit versehenes Metallbauteil

Publications (2)

Publication Number Publication Date
EP3020852A1 EP3020852A1 (fr) 2016-05-18
EP3020852B1 true EP3020852B1 (fr) 2017-11-01

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EP15003222.5A Active EP3020852B1 (fr) 2014-11-11 2015-11-11 Procede de fabrication d'une surface insensible aux contaminations et aux eraflures d'un composant metallique et composant metallique en etant revetu

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EP (1) EP3020852B1 (fr)
DE (1) DE102014116403A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6403649A (fr) * 1961-12-26 1965-10-07
GB1426423A (en) * 1974-12-04 1976-02-25 Fujisash Ind Ltd Method of producing coloured anodic coating on aluminum and its alloys
DE3717652A1 (de) * 1987-05-26 1988-12-08 Hoechst Ag Einstufiges elektrochemisches bilderzeugungsverfahren fuer reproduktionsschichten
DE3826715A1 (de) * 1988-08-05 1990-02-22 Fraunhofer Ges Forschung Verfahren zum beschichten von substraten mit einem isolierenden ueberzug
DE19954503A1 (de) * 1999-11-11 2001-05-17 Heiner Jenewein Verfahren zum Herstellen von Leichtmetallgegenständen mit dekorativer Oberfläche
DE10127770A1 (de) * 2001-06-07 2002-12-12 Volkswagen Ag Verfahren zur Erzeugung von Korrosionsschutzschichten auf Oberflächen aus Magnesium oder Magnesiumlegierungen
CN101293460B (zh) * 2007-04-24 2011-08-17 比亚迪股份有限公司 一种轻金属材料的表面装饰方法
HUE037904T2 (hu) * 2012-02-07 2018-09-28 Chemetall Gmbh Eljárás fém felületek bevonására

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Publication number Publication date
EP3020852A1 (fr) 2016-05-18
DE102014116403A1 (de) 2016-05-12

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