EP1826296B1 - Process for the manufacturing of an embossed and galvanised die-cast component - Google Patents

Process for the manufacturing of an embossed and galvanised die-cast component Download PDF

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Publication number
EP1826296B1
EP1826296B1 EP06003957A EP06003957A EP1826296B1 EP 1826296 B1 EP1826296 B1 EP 1826296B1 EP 06003957 A EP06003957 A EP 06003957A EP 06003957 A EP06003957 A EP 06003957A EP 1826296 B1 EP1826296 B1 EP 1826296B1
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EP
European Patent Office
Prior art keywords
semi
product
process according
embossing
embossed
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.)
Not-in-force
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EP06003957A
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German (de)
French (fr)
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EP1826296A1 (en
Inventor
Bernhard Dipl.-Ing. Happe
Josef Dipl.-Ing. Stümpel
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HDO Druckguss und Oberflaechentechnik GmbH
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HDO Druckguss und Oberflaechentechnik GmbH
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Priority to EP06003957A priority Critical patent/EP1826296B1/en
Priority to DE502006008800T priority patent/DE502006008800D1/en
Priority to AT06003957T priority patent/ATE497033T1/en
Publication of EP1826296A1 publication Critical patent/EP1826296A1/en
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Publication of EP1826296B1 publication Critical patent/EP1826296B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/08—Stamping or bending
    • B44C3/085—Stamping or bending stamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/028—Heated dies
    • 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
    • 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
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated

Definitions

  • the invention relates to a method for producing a component, wherein a semifinished product is urgeformt by die casting and wherein the semifinished product is provided by electroplating with a coating.
  • Electroplating of Zinc Diecastings by SK Jalota from 1978 is a master molding process for the production of die-cast zinc components, wherein the subsequent process steps galvanic layers are applied.
  • logos are introduced as decorative elements in the Zink réellegussbauteil.
  • the contour of the decorative elements has rounded edges.
  • a method for the production of a control unit in which a die-formed by die casting semi-finished product, such as a Zinktikgussbauteil is provided by electroplating with a chrome coating.
  • the coating may be formed as a bright chrome coating and / or as a black chrome coating, so that the component can be used for decorative purposes.
  • decorative elements such as labels or surface patterns, can be produced, wherein the component has a relatively corrosion-resistant surface.
  • a disadvantage of the known method is that the decorative element has no haptic character.
  • Object of the present invention is to provide a method for producing a component, that a decorative element with a pronounced haptic character is ensured on the surface of the component.
  • the method according to the invention in conjunction with the preamble of claim 1, characterized in that the semi-finished is preferably polished and / or ground prior to electroplating and on the other hand provided on a surface side with a decorative element by embossing, wherein the Contour of the decoration element is formed by edges.
  • the particular advantage of the invention is that a haptic decorative element can be integrated on a surface of a component in a production-wise simple manner.
  • the embossing depth can be, for example, 0.3 mm.
  • the invention enables mass production of always the same shape having components, since the influence of abrasive materials is limited.
  • the formation of a decorative layer on a component takes place essentially by the combination of a first embossing step and a second embossing step Galvanleitersitzes. Subsequent polishing of the component is no longer necessary.
  • the method according to the invention can be used to produce a handle part 1 for a door inner actuation of a motor vehicle according to FIGS Figures 1 and 2 or the FIGS. 3 and 4 be used.
  • the method according to the invention can also be used for producing a component or fitting for fittings in the sanitary sector or for other operating parts in the automotive industry, such as trim strips or the like.
  • the handle part 1 is formed as a door inner lever which is pivotally mounted on a locking mechanism, not shown.
  • the handle part 1 is elongated and rectangular in plan view and has on a front surface side 2 on a decorative element 3, which is designed as a logo "HDO".
  • the decorative element 3 can thus serve as a label of the handle part 1, wherein the decorative element 3 has a haptic character. How out FIG. 2 can be better seen, a contour (contour line 4) of the decorative element 3 is formed as an edge 5, so that the decorative element 3 adheres to a three-dimensional character. This has a visually appealing effect. On the other hand, the lettering of the decorative element 3 can be detected haptically.
  • the decoration element 3 can be used for information purposes, wherein a long-term stable surface structure is ensured by the manufacturing method described in more detail below.
  • a semi-finished product for example, made of a zinc material (zinc alloy) is urgeformt by die casting in a first step.
  • the semi-finished product already has the rectangular shape of the later handle part according to the Figures 1 and 2 ,
  • the semifinished product can be polished and / or ground.
  • the semifinished product can first be polished and then ground or first ground and then polished. The need for polishing and / or grinding depends on the quality of the die-cast semi-finished product.
  • the decoration element 3 is formed by embossing by means of a stamping die preheated to a temperature between 300 ° C. and 400 ° C., which has the contour 4 of the decoration element 3.
  • the die has a temperature of 350 ° C. The embossing of the semifinished product takes place in the cold state.
  • the embossing of the semifinished product 1 can also take place by means of an unhardened embossing stamp, wherein the semifinished product 1 itself is preheated at least in the region of the embossing location to a predetermined temperature.
  • the semifinished product 1 is heated to a preheating temperature which is greater than 200 ° C.
  • the embossing of the semifinished product 1 is then the same in the heated state.
  • a preheating of the semifinished product 1 is preferably provided when the semifinished product 1 consists of such a magnesium alloy or aluminum alloy or another metal alloy which has a relatively low ductility.
  • the preheating of the semifinished product 1 takes place when the breaking elongation of the alloy is in a range of 1 to 2%. The requirement of preheating may also be component dependent.
  • Preheating of the semifinished product preferably takes place for the following alloys: magnesium alloy AZ91 (3% elongation at break), AZ81 (2% elongation at break), aluminum alloy 226.
  • a preheating of the semifinished product 1 or the stamping die is not required for alloys which have a relatively high elongation at break.
  • These alloys include zinc alloys, in particular zamak alloys whose elongation at break is greater than 2%, zinc alloy Z410 and magnesium alloys AM50 and AM60.
  • the semifinished product 1 is a diecasting alloy.
  • the embossing depth of the decoration element 3 may be in a range between 0.2 mm and 1.0 mm, preferably 0.3 mm.
  • the decorative element 3 is essentially formed by recesses 6, which have relatively sharp edges 5 at the edge.
  • an intermediate layer and / or a cover layer is applied by electroplating.
  • the intermediate layer can consist, for example, of a copper layer deposited on the zinc material and on the same deposited nickel layer.
  • the cover layer can consist, for example, of a chromium layer deposited on the nickel layer, which is preferably formed as a high-gloss layer.
  • the component (handle part 1) is now completed, wherein components with the same surface structure or the same design of the decorative elements 3 can be provided. It is thus a high degree of reproducibility of identically designed handle parts 1 allows.
  • the handle part 1 is independent of wear produced, the tools used for this purpose a relatively long life exhibit. Thus, the manufacturing costs can be significantly reduced.
  • a handle part 10 may be provided with a decoration element 11, which is essentially formed by a corrugated wave structure.
  • the corrugated wave structure of the decoration element 11 is made in the same manner as the decoration element 3 according to the first embodiment.

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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)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Production of an operating component comprises polishing and/or grinding a semi-finished product (1) before galvanizing and providing with a decoration element (3) on a flat side (2) by embossing. The contour of the decoration element is formed by edges. Independent claims are also included for the following: (1) Device for carrying out the above process; and (2) Operating part produced by the above process.

Description

Die Erfindung betrifft ein verfahren zur Herstellung eines Bauteils, wobei ein Halbzeug durch Druckgießen urgeformt wird und wobei das Halbzeug durch Galvanisieren mit einem Überzug versehen wird.The invention relates to a method for producing a component, wherein a semifinished product is urgeformt by die casting and wherein the semifinished product is provided by electroplating with a coating.

Aus der Publikation " Electroplating of Zinc Diecastings" von S.K. Jalota aus dem Jahre 1978 ist ein Urformverfahren zur Herstellung von Zinkdruckgussbauteilen bekannt, wobeiauf die in nachfolgenden Verfahrensschritten galvanische Schichten aufgebracht werden. Bereits während des Urformens werden Schriftzüge als Dekorelemente in das Zinkdruckgussbauteil eingebracht. Die Kontur der Dekorelemente weist Abrundungen aufweisen. Nach dem Urformverfahrensschritt und vor dem Elektrogalvanisieren wird das Zinkdruckgussbauteil zwecks Verbesserung der Prozessfähigkeit poliert.From the publication " Electroplating of Zinc Diecastings "by SK Jalota from 1978 is a master molding process for the production of die-cast zinc components, wherein the subsequent process steps galvanic layers are applied. Already during the prototyping logos are introduced as decorative elements in the Zinkdruckgussbauteil. The contour of the decorative elements has rounded edges. After the masterbatching step and before electroplating, the zinc die cast component is polished to improve process capability.

Aus der DE 10 2004 006 098 A1 ist ein Verfahren zur Herstellung eines Bedienteils bekannt, bei dem ein durch Druckgießen urgeformtes Halbzeug, beispielsweise ein Zinkdruckgussbauteil, durch Galvanisieren mit einem Chromüberzug versehen wird. Der Überzug kann als eine Glanzchrombeschichtung und/oder als eine Schwarzchrombeschichtung ausgebildet sein, so dass das Bauteil für dekorative Zwecke eingesetzt werden kann. Somit können Dekorationselemente, wie Beschriftungen oder Oberflächenmuster, erzeugt werden, wobei das Bauteil eine relativ korrosionsbeständige Oberfläche aufweist. Nachteilig an dem bekannten Verfahren ist jedoch, dass das Dekorationselement keinen haptischen Charakter aufweist.From the DE 10 2004 006 098 A1 a method for the production of a control unit is known in which a die-formed by die casting semi-finished product, such as a Zinkdruckgussbauteil is provided by electroplating with a chrome coating. The coating may be formed as a bright chrome coating and / or as a black chrome coating, so that the component can be used for decorative purposes. Thus, decorative elements, such as labels or surface patterns, can be produced, wherein the component has a relatively corrosion-resistant surface. However, a disadvantage of the known method is that the decorative element has no haptic character.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zur Herstellung eines Bauteils anzugeben, dass ein Dekorationselement mit einem ausgeprägten haptischen Charakter auf der Oberfläche des Bauteils gewährleistet ist.Object of the present invention is to provide a method for producing a component, that a decorative element with a pronounced haptic character is ensured on the surface of the component.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren in Verbindung mit dem oberbegriff des Patentanspruchs 1 dadurch gekennzeichnet, dass das Halbzeug vor dem Galvanisieren zum einen vorzugsweise poliert und/oder geschliffen wird und zum anderen auf einer Flächenseite mit einem Dekorationselement durch Prägen versehen wird, wobei die Kontur des Dekorationselementes durch Kanten gebildet ist.To solve this problem, the method according to the invention in conjunction with the preamble of claim 1, characterized in that the semi-finished is preferably polished and / or ground prior to electroplating and on the other hand provided on a surface side with a decorative element by embossing, wherein the Contour of the decoration element is formed by edges.

Der besondere Vorteil der Erfindung besteht darin, dass auf fertigungstechnisch einfache Weise ein haptisches Dekorationselement auf einer Oberfläche eines Bauteils integriert werden kann. Durch die infolge des Prägens geformte scharfkantige Kontur des Dekorationselementes, wobei die Prägetiefe beispielsweise bei 0,3 mm liegen kann, wird ein optisch ansprechender 3D-Effekt des Dekorationselementes erzielt. Dadurch, dass das Galvanisieren den Abschluss des Herstellungsverfahrens bildet, kann eine schlierenfreie Oberflächenstruktur des Bauteils geschaffen werden. Die Erfindung ermöglicht eine Massenfertigung von stets die gleiche Form aufweisenden Bauteilen, da der Einfluss von abrasiv wirkenden Werkstoffen begrenzt ist.The particular advantage of the invention is that a haptic decorative element can be integrated on a surface of a component in a production-wise simple manner. By shaped as a result of stamping sharp-edged contour of the decorative element, wherein the embossing depth can be, for example, 0.3 mm, a visually appealing 3D effect of the decorative element is achieved. The fact that the galvanizing forms the conclusion of the manufacturing process, a streak-free surface structure of the component can be created. The invention enables mass production of always the same shape having components, since the influence of abrasive materials is limited.

Nach der Erfindung erfolgt die Ausbildung einer Dekorationsschicht auf einem Bauteil im Wesentlichen durch die Kombination eines ersten Prägeschrittes und eines zweiten Galvanisierungsschrittes. Ein nachfolgendes Polieren des Bauteils ist nicht mehr notwendig.According to the invention, the formation of a decorative layer on a component takes place essentially by the combination of a first embossing step and a second embossing step Galvanisierungsschrittes. Subsequent polishing of the component is no longer necessary.

Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further advantages of the invention will become apparent from the further subclaims.

Ausführungsbeispiele werden nachfolgend anhand der Zeichnungen näher erläutert.Exemplary embodiments are explained in more detail below with reference to the drawings.

Es zeigen:

Figur 1
eine Draufsicht auf ein Griffteil für eine Türinnenbetätigung eines Kraftfahrzeugs nach einer ersten Ausführungsform,
Figur 2
einen teilweisen Längsschnitt durch das Griffteil entlang der Linie II-II in Figur 1,
Figur 3
eine Draufsicht auf ein Griffteil einer Türinnenbetätigung für ein Kraftfahrzeug nach einer zweiten Ausführungsform und
Figur 4
einen Längsschnitt durch das Griffteil gemäß Figur 3.
Show it:
FIG. 1
a top view of a handle part for a door inner operation of a motor vehicle according to a first embodiment,
FIG. 2
a partial longitudinal section through the handle portion along the line II-II in FIG. 1 .
FIG. 3
a plan view of a handle portion of a door inner handle for a motor vehicle according to a second embodiment and
FIG. 4
a longitudinal section through the handle part according to FIG. 3 ,

Das erfindungsgemäße Verfahren kann zur Herstellung eines Griffteils 1 für eine Türinnenbetätigung eines Kraftfahrzeugs gemäß den Figuren 1 und 2 bzw. den Figuren 3 und 4 eingesetzt werden. Alternativ kann das erfindungsgemäße Verfahren auch zur Herstellung eines Bauteils oder Beschlages für Armaturen im Sanitärbereich oder für andere Bedienteile in der Automobilindustrie, wie beispielsweise Zierleisten oder dergleichen, eingesetzt werden.The method according to the invention can be used to produce a handle part 1 for a door inner actuation of a motor vehicle according to FIGS Figures 1 and 2 or the FIGS. 3 and 4 be used. Alternatively, the method according to the invention can also be used for producing a component or fitting for fittings in the sanitary sector or for other operating parts in the automotive industry, such as trim strips or the like.

Nach einer ersten Ausführungsform der Erfindung gemäß den Figuren 1 und 2 ist das Griffteil 1 als Türinnenhebel ausgebildet, der an einen nicht dargestellten Schließmechanismus schwenkbar angebracht ist. Das Griffteil 1 ist lang gestreckt und in Draufsicht rechteckförmig ausgebildet und weist auf einer vorderen Flächenseite 2 ein Dekorationselement 3 auf, das als ein Logo "HDO" ausgebildet ist.According to a first embodiment of the invention according to the Figures 1 and 2 the handle part 1 is formed as a door inner lever which is pivotally mounted on a locking mechanism, not shown. The handle part 1 is elongated and rectangular in plan view and has on a front surface side 2 on a decorative element 3, which is designed as a logo "HDO".

Das Dekorationselement 3 kann somit als eine Beschriftung des Griffteils 1 dienen, wobei das Dekorationselement 3 einen haptischen Charakter aufweist. Wie aus Figur 2 besser zu ersehen ist, ist eine Kontur (Konturlinie 4) des Dekorationselementes 3 als eine Kante 5 ausgebildet, so dass dem Dekorationselement 3 ein dreidimensionaler Charakter anhaftet. Dies hat zum einen eine optisch ansprechende Wirkung. Zum anderen kann der Schriftzug des Dekorationselementes 3 haptisch erfasst werden. Vorteilhaft kann beispielsweise das Dekorationselement 3 zu Informationszwecken verwendet werden, wobei durch das im Folgenden näher dargestellte Herstellungsverfahren eine langzeitstabile Oberflächenstruktur gewährleistet ist.The decorative element 3 can thus serve as a label of the handle part 1, wherein the decorative element 3 has a haptic character. How out FIG. 2 can be better seen, a contour (contour line 4) of the decorative element 3 is formed as an edge 5, so that the decorative element 3 adheres to a three-dimensional character. This has a visually appealing effect. On the other hand, the lettering of the decorative element 3 can be detected haptically. Advantageously, for example, the decoration element 3 can be used for information purposes, wherein a long-term stable surface structure is ensured by the manufacturing method described in more detail below.

Zur Herstellung des Griffteils 1 wird in einem ersten Schritt ein Halbzeug, beispielsweise aus einem Zinkmaterial (Zinklegierung), durch Druckgießen urgeformt. Das Halbzeug hat bereits die rechtwinkelartige Form des späteren Griffteils gemäß den Figuren 1 und 2.To produce the handle part 1, a semi-finished product, for example, made of a zinc material (zinc alloy) is urgeformt by die casting in a first step. The semi-finished product already has the rectangular shape of the later handle part according to the Figures 1 and 2 ,

In einem zweiten Schritt kann das Halbzeug poliert und/oder geschliffen werden. Beispielsweise kann das Halbzeug erst poliert und dann geschliffen oder erst geschliffen und dann poliert werden. Die Notwendigkeit des Polierens und/oder Schleifens hängt von der Qualität des druckgegossenen Halbzeugs ab.In a second step, the semifinished product can be polished and / or ground. For example, the semifinished product can first be polished and then ground or first ground and then polished. The need for polishing and / or grinding depends on the quality of the die-cast semi-finished product.

In einem weiteren Schritt erfolgt das Ausbilden des Dekorationselementes 3 durch Prägen mittels eines auf eine Temperatur zwischen 300°C und 400°C vorgewärmten Prägestempels, der die Kontur 4 des Dekorationselementes 3 aufweist. Vorzugsweise weist der Prägestempel eine Temperatur von 350°C auf. Das Prägen des Halbzeugs erfolgt im kalten Zustand desselben.In a further step, the decoration element 3 is formed by embossing by means of a stamping die preheated to a temperature between 300 ° C. and 400 ° C., which has the contour 4 of the decoration element 3. Preferably, the die has a temperature of 350 ° C. The embossing of the semifinished product takes place in the cold state.

Nach einer alternativen Ausführungsform der Erfindung kann das Prägen des Halbzeugs 1 auch mittels eines nicht aufgeheizten Prägestempels erfolgen, wobei das Halbzeug 1 selbst zumindest im Bereich des Prägeortes auf eine vorgegebene Temperatur vorerwärmt wird. Das Halbzeug 1 wird dabei auf eine Vorerwärmtemperatur aufgeheizt, die größer als 200°C ist. Das Prägen des Halbzeugs 1 erfolgt dann im erwärmten Zustand desselben.According to an alternative embodiment of the invention, the embossing of the semifinished product 1 can also take place by means of an unhardened embossing stamp, wherein the semifinished product 1 itself is preheated at least in the region of the embossing location to a predetermined temperature. The semifinished product 1 is heated to a preheating temperature which is greater than 200 ° C. The embossing of the semifinished product 1 is then the same in the heated state.

Beispielsweise kann bei relativ großvolumigen Halbzeugen eine lokale Vorerwärmung stattfinden, beispielsweise durch induktives Erwärmen, so dass lediglich der für das Prägen relevante Materialbereich erwärmt wird. Hierdurch kann der Aufheizaufwand weitgehend reduziert werden.For example, in the case of relatively large-volume semi-finished products, local preheating may take place, for example by inductive heating, so that only the material region relevant for embossing is heated. As a result, the Aufheizaufwand can be largely reduced.

Eine Vorerwärmung des Halbzeugs 1 ist vorzugsweise dann vorgesehen, wenn das Halbzeug 1 aus einer solchen Magnesiumlegierung oder Aluminiumlegierung oder einer anderen Metalllegierung besteht, die über eine relativ geringe Duktilität verfügt. Vorzugsweise erfolgt die Vorerwärmung des Halbzeugs 1 dann, wenn die Bruchdehnung der Legierung in einem Bereich von 1 bis 2 % liegt. Das Erfordernis der Vorerwärmung kann auch bauteilabhängig sein. Vorzugsweise erfolgt eine Vorerwärmung des Halbzeugs bei folgenden Legierungen: Magnesiumlegierung AZ91 (3 % Bruchdehnung), AZ81 (2 % Bruchdehnung), Aluminiumlegierung 226.A preheating of the semifinished product 1 is preferably provided when the semifinished product 1 consists of such a magnesium alloy or aluminum alloy or another metal alloy which has a relatively low ductility. Preferably, the preheating of the semifinished product 1 takes place when the breaking elongation of the alloy is in a range of 1 to 2%. The requirement of preheating may also be component dependent. Preheating of the semifinished product preferably takes place for the following alloys: magnesium alloy AZ91 (3% elongation at break), AZ81 (2% elongation at break), aluminum alloy 226.

Eine Vorerwärmung des Halbzeugs 1 bzw. des Prägestempels ist nicht erforderlich für Legierungen, die eine relativ hohe Bruchdehnung aufweisen. Zu diesen Legierungen gehören Zinklegierungen, wie insbesondere Zamak-Legierungen, deren Bruchdehnung größer ist als 2 %, Zinklegierung Z410 sowie Magnesiumlegierungen AM50 und AM60.A preheating of the semifinished product 1 or the stamping die is not required for alloys which have a relatively high elongation at break. These alloys include zinc alloys, in particular zamak alloys whose elongation at break is greater than 2%, zinc alloy Z410 and magnesium alloys AM50 and AM60.

Wesentlich ist, dass es sich bei dem Halbzeug 1 um eine Druckgusslegierung handelt.It is essential that the semifinished product 1 is a diecasting alloy.

Die Prägetiefe des Dekorationselementes 3 kann in einem Bereich zwischen 0,2 mm und 1,0 mm, vorzugsweise 0,3 mm, betragen.The embossing depth of the decoration element 3 may be in a range between 0.2 mm and 1.0 mm, preferably 0.3 mm.

Wie aus Figur 2 ersichtlich ist, ist das Dekorationselement 3 im Wesentlichen durch Vertiefungen 6 gebildet, die randseitig über relativ scharfe Kanten 5 verfügen.How out FIG. 2 it can be seen, the decorative element 3 is essentially formed by recesses 6, which have relatively sharp edges 5 at the edge.

In einem weiteren Verfahrensschritt wird durch Galvanisieren eine Zwischenschicht und/oder eine Deckschicht aufgebracht. Die Zwischenschicht kann beispielsweise aus einer auf das Zinkmaterial abgeschiedenen Kupferschicht und auf derselben abgeschiedenen Nickelschicht bestehen. Die Deckschicht kann beispielsweise aus einer auf der Nickelschicht abgeschiedenen Chromschicht bestehen, die vorzugsweise als Hochglanzschicht ausgebildet ist.In a further method step, an intermediate layer and / or a cover layer is applied by electroplating. The intermediate layer can consist, for example, of a copper layer deposited on the zinc material and on the same deposited nickel layer. The cover layer can consist, for example, of a chromium layer deposited on the nickel layer, which is preferably formed as a high-gloss layer.

Das Bauteil (Griffteil 1) ist nun fertig gestellt, wobei Bauteile mit gleicher Oberflächenstruktur bzw. gleicher Ausbildung der Dekorationselemente 3 bereitgestellt werden können. Es wird somit ein hohes Maß an Reproduzierbarkeit von gleich ausgestalteten Griffteilen 1 ermöglicht. Das Griffteil 1 ist verschleißunabhängig herstellbar, wobei die hierzu verwendeten Werkzeuge eine relativ lange Lebensdauer aufweisen. Somit können die Herstellungskosten wesentlich reduziert werden.The component (handle part 1) is now completed, wherein components with the same surface structure or the same design of the decorative elements 3 can be provided. It is thus a high degree of reproducibility of identically designed handle parts 1 allows. The handle part 1 is independent of wear produced, the tools used for this purpose a relatively long life exhibit. Thus, the manufacturing costs can be significantly reduced.

Nach einer alternativen Ausführungsform gemäß den Figuren 3 und 4 kann ein Griffteil 10 mit einem Dekorationselement 11 versehen sein, das im Wesentlichen durch eine geriffelte Wellenstruktur gebildet ist. Die geriffelte Wellenstruktur des Dekorationselementes 11 wird auf gleiche Weise hergestellt, wie das Dekorationselement 3 gemäß der ersten Ausführungsform.According to an alternative embodiment according to the FIGS. 3 and 4 For example, a handle part 10 may be provided with a decoration element 11, which is essentially formed by a corrugated wave structure. The corrugated wave structure of the decoration element 11 is made in the same manner as the decoration element 3 according to the first embodiment.

Durch die geriffelte Struktur des Dekorationselementes 11 kann ein leichteres Erfassen des Griffteils 10 ermöglicht bzw. ein unverwünschtes manuelles Abrutschen von dem Griffteil 10 verhindert werden.Due to the corrugated structure of the decoration element 11, an easier gripping of the grip part 10 is made possible or an undesired manual slipping off of the grip part 10 can be prevented.

Claims (8)

  1. Process for the manufacturing of a component wherein a semi-product (1) is shaped by die-casting and provided with a coating by galvanizing, characterized in that said semi-product (1) is prior to the galvanizing treatment polished and/or ground on the one hand and one of its side faces (2) provided with a decorative element (3, 11) by embossing on the other hand with the contour (4) of said decorative element (3, 11) formed by edging (5).
  2. Process according to Claim 1, characterized in that said decorative element (3, 11) is embossed by means of a stamping tool heated to a temperature between 300°C and 400°C and/or dependent on the material properties of the semi-product (1) in a preheated state thereof.
  3. Process according to Claim 1 or 2, characterized in that the semi-product (1) is preheated to a temperature higher than 200°C and then embossed by means of a non-heated embossing tool.
  4. Process according to Claim 1 or 2, characterized in that the semi-product (1, 10) is embossed while in cold state.
  5. Process according to any of the preceding Claims 1 to 4, characterized in that the decorative element (3, 11) is formed by embossing to a depth between 0.2 and 1.0 mm.
  6. Process according to any of the preceding Claims 1 to 5, characterized in that to provide the coating an intermediate copper and/or nickel layer is first applied to the semi-product (1) followed by a top layer of chromium.
  7. Process according to any of the preceding Claims 1 to 6, characterized in that the semi-product (1, 10) is cast using a zinc material and/or zinc alloy.
  8. Process according to any of the preceding Claims 1 to 7, characterized in that the component is an operating element.
EP06003957A 2006-02-27 2006-02-27 Process for the manufacturing of an embossed and galvanised die-cast component Not-in-force EP1826296B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP06003957A EP1826296B1 (en) 2006-02-27 2006-02-27 Process for the manufacturing of an embossed and galvanised die-cast component
DE502006008800T DE502006008800D1 (en) 2006-02-27 2006-02-27 Process for producing an embossed and galvanized die-cast component
AT06003957T ATE497033T1 (en) 2006-02-27 2006-02-27 METHOD FOR PRODUCING AN EMBOSSED AND GALVANIZED DIE-CAST COMPONENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06003957A EP1826296B1 (en) 2006-02-27 2006-02-27 Process for the manufacturing of an embossed and galvanised die-cast component

Publications (2)

Publication Number Publication Date
EP1826296A1 EP1826296A1 (en) 2007-08-29
EP1826296B1 true EP1826296B1 (en) 2011-01-26

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EP (1) EP1826296B1 (en)
AT (1) ATE497033T1 (en)
DE (1) DE502006008800D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052497B4 (en) * 2009-11-11 2014-01-16 HDO Druckguß- und Oberflächentechnik GmbH Component, in particular decorative component, as well as apparatus, methods and semi-finished product for producing the same
DE202011103736U1 (en) * 2011-07-27 2012-11-20 HDO Druckguss- und Oberflächentechnik GmbH Galvanically coated component
DE102012008544A1 (en) 2012-05-02 2013-11-07 Umicore Galvanotechnik Gmbh Chromed composites without nickel coating
WO2023001696A1 (en) * 2021-07-17 2023-01-26 Velimir Gmbh & Co. Kg Composite material consisting of substrate with adhesion-promoting copper layer and chromium-containing top layer, and method for producing same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB438808A (en) * 1934-05-25 1935-11-25 Hubert Leslie Stringer Improvements in or relating to devices for impressing or indenting metal strip
DE2141269A1 (en) * 1971-08-18 1973-03-01 Hansa Metallwerke Ag Matt surfacing of metals - by blasting and electroplating
JPS5864395A (en) * 1981-10-13 1983-04-16 Seiko Instr & Electronics Ltd Plating method for die cast parts
DE3336374C2 (en) * 1983-10-06 1986-12-18 Kurt Zecher GmbH, 4790 Paderborn Method of making the surface of an ink transfer roller
US20050211114A1 (en) * 2002-11-16 2005-09-29 Juergen Fahrenbach Nano-optical color embrossing
DE10312308A1 (en) * 2003-03-19 2004-10-07 Blanco Gmbh + Co Kg Process for the production of sanitary fittings with a stainless steel finish
DE102004006098A1 (en) 2004-02-06 2005-09-01 Huwil-Werke Gmbh Möbelschloss- Und Beschlagfabriken Coating articles comprises applying first corrosion-resistant metallic coating to article, applying second corrosion-resistant metallic coating over first coating and partially removing second coating to expose first

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ATE497033T1 (en) 2011-02-15
DE502006008800D1 (en) 2011-03-10
EP1826296A1 (en) 2007-08-29

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