EP2551383A2 - Composant à revêtement galvanique ainsi que son procédé de fabrication - Google Patents

Composant à revêtement galvanique ainsi que son procédé de fabrication Download PDF

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Publication number
EP2551383A2
EP2551383A2 EP12175116A EP12175116A EP2551383A2 EP 2551383 A2 EP2551383 A2 EP 2551383A2 EP 12175116 A EP12175116 A EP 12175116A EP 12175116 A EP12175116 A EP 12175116A EP 2551383 A2 EP2551383 A2 EP 2551383A2
Authority
EP
European Patent Office
Prior art keywords
layer
component
metallic
ground
brushed
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.)
Withdrawn
Application number
EP12175116A
Other languages
German (de)
English (en)
Other versions
EP2551383A3 (fr
Inventor
Alexander Gossing
Heinz Dr. Herberhold
Paul Nellißen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HDO Druckguss und Oberflaechentechnik GmbH
Original Assignee
HDO Druckguss und Oberflaechentechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HDO Druckguss und Oberflaechentechnik GmbH filed Critical HDO Druckguss und Oberflaechentechnik GmbH
Publication of EP2551383A2 publication Critical patent/EP2551383A2/fr
Publication of EP2551383A3 publication Critical patent/EP2551383A3/fr
Withdrawn legal-status Critical Current

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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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
    • C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/10—Electroplating with more than one layer of the same or of different metals
    • C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium

Definitions

  • the present invention relates to a galvanically coated component having a base component, which has an electrically conductive surface, and with a plurality of metallic layers, which are applied to one another superimposed on the base component, wherein at least one layer has a machined surface. Furthermore, the invention relates to a method for producing such components.
  • Electroplating is an electrochemical process in which a metal layer is deposited on a device having an electrically conductive surface.
  • electrolytes are generally used. These consist of aqueous solutions of ionic compounds of the metals to be deposited, as well as other constituents, such as alkalis, acids and additives.
  • the components are immersed in an electrolyte bath after a suitable pretreatment, and a metal coating is deposited on the component as a result of the application of an external voltage. That way you can For example, chromium, nickel, zinc, or noble metal layers or even alloy layers are applied to components.
  • the galvanic application of the metallic layers can be both functionally and aesthetically motivated.
  • the functional electroplating technology focuses on the protection of components against corrosion and wear or an improvement in the electrical conductivity, in particular of the surface.
  • the provision of a comparatively hard surface can also be achieved by electroplating.
  • the metallization of surfaces is carried out to meet aesthetic requirements.
  • Plastic components can be chrome plated, for example, to create a valuable visual impression.
  • the components are characterized by a high gloss and look noble and solid.
  • High demands are placed on the quality of the galvanically coated components. They must be characterized by excellent surface properties, and there must be a high degree of flexibility with regard to the design possibilities, especially of the surface of the components.
  • the aspirations go further to produce components that give the impression through their look and feel, to be made of a particular, valuable metal, although they are not or at least not entirely made of this metal.
  • a method for producing a component, which is characterized by a stainless steel-like appearance is, for example, in the DE 103 03 649 A1 disclosed.
  • a layer of copper, nickel or a copper-nickel alloy is first applied to an existing plastic component.
  • the applied metal layer is brushed and / or sandblasted and on the thus surface-treated layer, a nickel-tungsten layer is applied.
  • a component obtained in the Substantially consists of plastic, but as a result of the coating and the brushing and / or sandblasting of at least one layer has a stainless steel-like appearance.
  • a galvanically coated component of the type mentioned above which is characterized in that the surface of at least one of the metallic layers is ground by at least one abrasive having a grain size ⁇ 180, and the surface of at least one other overlying metallic layer brushed.
  • the look and feel of brushed aluminum can be made by electroplating several metallic layers one above the other onto a component, one of the layers being ground with a fine or medium grit abrasive, and another overlying layer is brushed.
  • the scoring structure produced by the grinding is not leveled during the application of the further layers, but penetrates into them.
  • the interaction of loops and brushes results in the superimposed metallic layers of the component in the desired visual appearance of the surface.
  • the haptic properties of the component are excellent due to the ridge structure in the surface.
  • ground layer a soft metal such as copper or a soft metal alloy such as soft brass is used. This ensures that a pronounced and uniform scoring structure can be introduced into the surface of this layer using the abrasive. In addition, the ground layer can be additionally brushed.
  • Substantially less material can be saved using the method according to the invention since the component does not have to be manufactured as a whole from aluminum in order to obtain the desired appearance. Rather, the use of aluminum can be completely dispensed with.
  • the grain size of the abrasive used is less than 180, which means there are less than 180 grains per inch.
  • the grain size is therefore about 140 microns.
  • the surface of the ground layer can be ground by an abrasive with a grain size ⁇ 150, a grain size ⁇ 120, a grain size ⁇ 80 or a grain size ⁇ 60. These grits have proven to be particularly suitable for producing an authentic look of brushed aluminum.
  • the ground layer consists of copper or a copper alloy, such as brass, or of nickel or tin.
  • the brushed layer may further consist of nickel and on these may be applied a metallic cover layer consisting of chromium.
  • the cover layer has a thickness which remains substantially constant over the surface of the component, thereby ensuring that the scoring structure produced by grinding and brushing is not leveled. This layer system has proven to be particularly suitable.
  • a further metallic layer is provided between the ground and the brushed layer.
  • the further metallic layer may consist of nickel and the overlying, brushed layer of chromium.
  • the chrome layer is brushed in the last step, which was finally applied galvanically to the component.
  • There does not have to be any extra Cover layer can be applied to the surface-treated layer and it can be saved in the galvanization process, a step.
  • a further embodiment of the present invention is characterized in that the base component is a metallic component produced in particular by the die-casting method.
  • the base member may further be made of a zinc alloy.
  • Die casting components can be produced in a simple way and inexpensively in large quantities.
  • a high degree of freedom of form is given for components that are produced by die-casting. Even curved shapes can be realized, for example, in a simple way.
  • plastic base component which has an electrically conductive surface. This can be obtained in a conventional manner by suitable pretreatment of the plastic component.
  • a galvanically applied metallic intermediate layer is provided on the electrically conductive surface of the base member and the ground metallic layer is applied to the intermediate layer.
  • the intermediate layer consists of copper or a copper alloy and / or zinc or a zinc alloy. The intermediate layer provides an optimum surface for subsequent plating steps.
  • the component is subjected to the necessary pretreatments in a conventional manner. Also between the individual electroplating steps, the component can be subjected to necessary treatments which are known to the person skilled in the art.
  • All of the metal layers mentioned here may be layers of alloys of the respective metals.
  • the term used for the chrome plating includes, for example, the application of metal layers of chromium alloys.
  • the FIG. 1 shows a galvanically coated component according to the present invention.
  • the component comprises a base component 1, which is produced by die-casting and consists of a zinc alloy.
  • a base component 1 which is produced by die-casting and consists of a zinc alloy.
  • On the base member 1 a total of four superimposed metallic layers 2, 3, 4, 5 are applied galvanically.
  • the lower two layers are an intermediate layer 2 and an overlying layer 3, both made of a copper alloy, wherein the Surface of the upper layer 3 is ground.
  • the scoring structure in the ground layer 3 is in FIG. 1 clearly visible in the sectional view.
  • Above the ground layer 3 is a brushed layer 4, which consists of nickel and has a finer ridge structure.
  • the cover layer 5 of the component consists of chromium here.
  • the base member 1 is provided with an intermediate layer 2, which in FIG. 3a is shown.
  • the component is galvanized, wherein the metallic layer 3 is applied from a copper alloy on the component.
  • the surface of the applied layer 3 is then ground by an abrasive having a grain size ⁇ 180. In the illustrated embodiment, an average grain size of about 60 is used.
  • the component is galvanized again in order to apply to the ground layer 3, the further metallic layer 4 made of nickel.
  • the nickel layer 4 has a thickness that remains substantially constant over the surface of the component and that the scoring structure of the underlying ground layer 3 is not leveled, but rather in this layer 4 reflected.
  • the nickel layer 4 is then brushed, whereby additionally a fine scoring structure is applied to the surface of the component.
  • the metallic cover layer 5 is finally applied galvanically to the component.
  • This likewise has a thickness that remains essentially constant over the surface of the component, which ensures that the scoring structure produced by means of grinding and brushing is retained and is deposited in the cover layer 5.
  • This is in FIG. 1 clearly visible.
  • the surface of the resulting component is characterized by an excellent feel.
  • the in FIG. 3 shown galvanically coated component can be produced.
  • the component is identical to the one in the polished layer 3 FIG. 1 shown.
  • a further metallic layer 6 is provided, which consists of nickel.
  • FIGS. 4a to 4e To complete the ground layer 3 are in the FIGS. 4a to 4e shown method steps identical to those of the already described embodiment ( FIGS. 2a to 2c ).
  • the further metallic layer 6 is applied galvanically to the ground layer 3. This has a thickness that remains essentially constant over the surface of the component, so that the scoring structure of the underlying ground layer 3 is reflected in this further metallic layer 6.
  • This layer 6 is not subsequently surface-treated, however, but the further metallic layer 4 of chromium is applied directly to the component and then brushed.
  • Another (top) layer does not have to be applied to the component.

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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)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP12175116.8A 2011-07-27 2012-07-05 Composant à revêtement galvanique ainsi que son procédé de fabrication Withdrawn EP2551383A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011103736U DE202011103736U1 (de) 2011-07-27 2011-07-27 Galvanisch beschichtetes Bauteil

Publications (2)

Publication Number Publication Date
EP2551383A2 true EP2551383A2 (fr) 2013-01-30
EP2551383A3 EP2551383A3 (fr) 2014-12-24

Family

ID=46466236

Family Applications (1)

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EP12175116.8A Withdrawn EP2551383A3 (fr) 2011-07-27 2012-07-05 Composant à revêtement galvanique ainsi que son procédé de fabrication

Country Status (2)

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EP (1) EP2551383A3 (fr)
DE (1) DE202011103736U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016142005A1 (fr) * 2015-03-11 2016-09-15 Gerhardi Kunststofftechnik Gmbh Élément en plastique décoré par voie galvanique et procédé de production d'un élément en plastique à la surface structurée
DE102015006552A1 (de) 2015-05-21 2016-11-24 Audi Ag Verfahren zum Herstellen eines Bauteils mit einer strukturierten Oberfläche für eine Bedieneinrichtung eines Kraftfahrzeugs
DE102015011404A1 (de) 2015-08-29 2017-03-16 Audi Ag Bauteil für eine Bedieneinrichtung eines Kraftfahrzeugs mit einer teilweise strukturierten Oberfläche
DE102015007663B4 (de) 2015-06-16 2023-10-19 Audi Ag Verfahren zum Herstellen eines Bauteils für ein Kraftfahrzeug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303649A1 (de) 2003-01-27 2004-07-29 Hansgrohe Ag Beschichtungsverfahren

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL189310C (nl) * 1984-05-18 1993-03-01 Toyo Kohan Co Ltd Beklede stalen plaat met verbeterde lasbaarheid en werkwijze voor de vervaardiging.
US4787112A (en) * 1987-08-28 1988-11-29 Usx Corporation Edge brush for electroplated strip
DE10303650A1 (de) * 2003-01-27 2004-07-29 Hansgrohe Ag Beschichtungsverfahren
DE10303648A1 (de) * 2003-01-27 2004-07-29 Hansgrohe Ag Beschichtungsverfahren
DE10312308A1 (de) * 2003-03-19 2004-10-07 Blanco Gmbh + Co Kg Verfahren zur Herstellung von Sanitärarmaturen mit Edelstahlfinish
ATE497033T1 (de) * 2006-02-27 2011-02-15 Hdo Druckguss Und Oberflaechentechnik Gmbh Verfahren zur herstellung eines geprägten und galvanisierten druckgussbauteils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303649A1 (de) 2003-01-27 2004-07-29 Hansgrohe Ag Beschichtungsverfahren

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016142005A1 (fr) * 2015-03-11 2016-09-15 Gerhardi Kunststofftechnik Gmbh Élément en plastique décoré par voie galvanique et procédé de production d'un élément en plastique à la surface structurée
CN107636208A (zh) * 2015-03-11 2018-01-26 格哈迪塑胶技术有限责任公司 由塑料构成的电镀地装饰的结构部件以及用于制造带有经结构化的表面的塑料结构部件的方法
CN107636208B (zh) * 2015-03-11 2020-03-27 格哈迪塑胶技术有限责任公司 由塑料构成的电镀地装饰的结构部件以及用于制造带有经结构化的表面的塑料结构部件的方法
US10927471B2 (en) 2015-03-11 2021-02-23 Gerhardi Kunststofftechnik Gmbh Galvanically decorated component made of plastic, and method for producing a plastic component having a structured surface
US20210079549A1 (en) * 2015-03-11 2021-03-18 Gerhardi Kunststofftechnik Gmbh Galvanically decorated component made of plastic, and method for producing a plastic component having a structured surface
DE102015006552A1 (de) 2015-05-21 2016-11-24 Audi Ag Verfahren zum Herstellen eines Bauteils mit einer strukturierten Oberfläche für eine Bedieneinrichtung eines Kraftfahrzeugs
DE102015007663B4 (de) 2015-06-16 2023-10-19 Audi Ag Verfahren zum Herstellen eines Bauteils für ein Kraftfahrzeug
DE102015011404A1 (de) 2015-08-29 2017-03-16 Audi Ag Bauteil für eine Bedieneinrichtung eines Kraftfahrzeugs mit einer teilweise strukturierten Oberfläche

Also Published As

Publication number Publication date
EP2551383A3 (fr) 2014-12-24
DE202011103736U1 (de) 2012-11-20

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