EP2332672B1 - Composant, notamment composant de décoration, ainsi que dispositif, procédé et demi-produit pour la fabrication de celui-ci - Google Patents

Composant, notamment composant de décoration, ainsi que dispositif, procédé et demi-produit pour la fabrication de celui-ci Download PDF

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Publication number
EP2332672B1
EP2332672B1 EP10193824.9A EP10193824A EP2332672B1 EP 2332672 B1 EP2332672 B1 EP 2332672B1 EP 10193824 A EP10193824 A EP 10193824A EP 2332672 B1 EP2332672 B1 EP 2332672B1
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EP
European Patent Office
Prior art keywords
blank
frame
semifinished product
mold
web
Prior art date
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Application number
EP10193824.9A
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German (de)
English (en)
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EP2332672A3 (fr
EP2332672A2 (fr
Inventor
Dietmar Korte
Christian Leon
Uwe Meier
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
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Publication of EP2332672A2 publication Critical patent/EP2332672A2/fr
Publication of EP2332672A3 publication Critical patent/EP2332672A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/2272—Sprue channels
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/38—Electroplating: Baths therefor from solutions of copper
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/38—Electroplating: Baths therefor from solutions of copper
    • C25D3/40—Electroplating: Baths therefor from solutions of copper from cyanide baths, e.g. with Cu+
    • 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
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
    • C25D5/611—Smooth 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
    • C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance

Definitions

  • the invention relates to a device for casting a semifinished product, in particular a Zinkdruckg devisteils having a mold, formed by the at least one pouring channel for supplying a melt, a mold cavity for receiving a first part of the melt and at least one side space for receiving a second part of the melt is.
  • the invention relates to a semifinished product for the production of galvanized components, in particular of decorative components or the like.
  • the invention relates to a method for producing a component, in particular a decorative component, in which a semifinished product according to the invention with a device according to the invention is produced by die casting.
  • JP 2002045956 A From the JP 2002045956 A is already a housing of an electronic device and a method for producing such a housing by die casting known. Similarly, the JP 2002160041 A an apparatus and method for casting a thin housing for mobile devices.
  • a metal mold for casting a workpiece having two mold shells through which a mold cavity is formed is known.
  • the metal casting mold has no heating or cooling channels for tempering the same.
  • the melt is introduced via a pouring channel into the mold cavity and can escape from the mold cavity into an auxiliary space serving as an overflow space.
  • the disadvantage here is that the melt first passes into the mold cavity and then into the overflow space.
  • the mold cavity is partially cooled melt that has flowed during the casting of the previous workpiece from the storage container of the melt in the supply lines and now forms a non-optimal homogeneous structure for the just cast workpiece.
  • the component formed in the mold cavity after cooling must be freed from both the web connecting the mold cavity and the secondary space and the casting channel. The component must therefore be separated at least two surface locations and optionally reworked.
  • a component in particular a decorative component
  • a metallic surface layer is applied to the component by electroplating.
  • the blank produced by means of die-casting must be polished consuming prior to electroplating.
  • the object of the present invention is to substantially simplify the production of a component, in particular a decorative component, and to make it more economical.
  • the invention in conjunction with the preamble of claim 1, characterized in that the side space surrounds the mold cavity frame-shaped and full circumference, so that when pouring the semifinished product in the mold cavity a blank is poured and in the next room a frame is poured, which surrounds the blank frame-shaped with a distance of 1 to 10mm and which covers the blank fully and over its entire thickness, wherein the backs of the blank and the frame lie in a common plane which is defined by a parting plane of the mold, and wherein a the rear side opposite the upper side of the frame projects beyond the rear side of the upper side of the blank, and that separate feed channels of the mold lead from the mold channel formed as a main pouring channel respectively to the mold cavity and to the secondary space, wherein a first feed channel assigned to the mold cavity is provided in the Vergle I have a smaller cross-section to a second feed channel assigned to the secondary space and wherein the main pouring channel, the first feed channel and the second feed channel are designed such that during casting of the semifinished product the melt
  • the particular advantage of the invention is that due to the choice of cross sections of a first feed channel for supplying a first part of the melt in the Formnest and a second feed channel for supplying a second part of the melt to an adjacent room, first the side room and then the mold cavity are poured out.
  • the melt which has flowed out of the temperature-controlled storage container of the casting device and has cooled in the supply lines of the device, first passes into the auxiliary space and fills it.
  • the mold cavity is poured out with melt which flows out of the storage container at an optimally tempered temperature, so that the workpiece formed in the mold cavity has a particularly homogeneous microstructure.
  • the mold cavity is connected to the main casting channel only via the first feed channel.
  • a channel from the mold cavity to the secondary room is not provided.
  • the molded in the mold cavity workpiece must therefore be separated only by a frame web.
  • tempering that is to say heating or cooling
  • of the casting mold can be dispensed with. This reduces on the one hand the costs for the production of the casting mold.
  • especially small parts can be produced in very high quality. Small parts are cast in small, filigree casting molds, which can not be tempered or only very expensive, since the introduction of cooling channels and an exact temperature of the molds due to the size ratio is complex.
  • this frame shields the workpiece during subsequent plating, so that - unlike the classical method - avoiding accretions on the edges of the blank during galvanization of the semifinished product or be significantly reduced. The surface quality of the finished component is thereby improved.
  • the committee sinks on components after the galvanization step.
  • the invention is not limited to zinc die castings.
  • die cast aluminum parts as well as die cast magnesium parts may be cast with the device.
  • the tool technology can also be used for plastic workpieces, so that workpieces can be produced for example by means of plastic injection molding.
  • the adjoining room completely surrounds the mold nest. If the frame-shaped side space formed closed and extends in an extension plane of the mold cavity, so advantageously simplifies the storage and handling of the casting, as a catching of bulk material stored or transported castings is reliably avoided by the formation of the closed frame. Further, the shielding of the blank formed in the mold cavity during plating improves by the formation of a closed frame and the orientation thereof in the plane of extension of the workpiece, so that the surface quality is further improved.
  • the molding tool for forming the mold cavity and / or the secondary space and / or the Hauptg discernkanals and / or the first feed channel and / or the second feed channel is formed of a hard metal.
  • no burrs are formed on the forming tool made of hard metal at the parting plane of the molding tool, so that the cast semifinished product has a particularly high quality. Furthermore, this improves the economy in particular in the production of small parts, since the service life of the mold is increased.
  • the mold has four slides.
  • four slides even complicated semi-finished products, in particular a plurality of each completely surrounded by a frame blanks, can be produced with a comparatively simple design mold.
  • a produced by means of a device for casting according to one of claims 1 to 4 semi-finished with a blank and a frame that surrounds the blank with a distance of 1 to 10mm frame-shaped and covering the blank in full and over its entire thickness wherein the backsides of the blank and the frame lie in a common plane defined by a parting plane of a molding die of the molding apparatus, and wherein a backside opposite top of the frame projects beyond a backside top of the blank, the blank over a first support web with a main frame web and the frame is connected via a second support web with the main frame web, provided.
  • the main frame web, the first support web and the second support web together with the frame form a support frame, by means of which the semifinished product can be fastened to a goods carrier, by means of which the semifinished product can be introduced into a galvanic deposition device, for the deposition of a metal layer.
  • the frame by providing the frame around the blank, the surface quality of the metallic coating produced in a subsequent electroplating step on the blank is improved.
  • the inclusion of the blank simplifies on the goods carrier, since this is fastened together with the frame, the first support web, the second support web and the main frame web on the goods carrier.
  • Frame, support webs and main frame web in this case form a support frame, which is introduced together with the blank in the galvanic deposition device.
  • the shielding of the blank by a closed frame which has a distance between 1 mm and 10 mm to the blank, a particularly high surface quality, that has a substantially constant surface layer thickness and low edge accretions. It is particularly advantageous if the distance between the blank and the frame is less than 5 mm and the frame surrounds the blank in approximately constant distance.
  • the semi-finished product can be cast in a comparatively simple mold.
  • the semi-finished product is particularly economical in its production.
  • the fact that in addition one of the rear side opposite the upper side of the frame projects beyond the rear side of the upper side of the blank and the blank is covered completely and over its entire thickness of the frame, has a particularly advantageous effect on the surface quality of the subsequent galvanization process and prevents accretion the edges of the component produced by galvanizing from the blank reliably or reduces the adhesion to a not disturbing or permissible measure.
  • the semifinished product can be produced, for example, by means of zinc, aluminum or magnesium pressure casting. Likewise, the semifinished product can be formed as a plastic injection molded part.
  • the frame protrude from a number of webs, which with a clamping surface the same undercut the common plane of the backs of the blank and the frame.
  • the webs protrude to a common side of the frame.
  • a method for producing a component in which a semifinished product according to one of claims 5 to 8 with a device according to one of claims 1 to 4 is produced by die casting.
  • a metal material can be deposited by electrodeposition on a surface of the blank of the semifinished product, wherein the semifinished product is held on a product carrier immersed in a galvanic deposition device.
  • the semi-finished product can be introduced into the galvanic separator without prior polishing of the blank.
  • the particular advantage of the invention is that can be dispensed with the process step of polishing and the production of the component is much cheaper possible.
  • the blank is shielded by the frame during plating, so that the formation of accretions on the edges of the blank is avoided and can be at least largely dispensed with the provision of diaphragms when immersing the blanks in the electroplating.
  • the process step of the electrodeposition for generating the high-quality component surface is significantly simplified.
  • dimensional tolerance problems can be almost completely eliminated, since tolerances of +/- 0.015 mm can be realized in the process chain.
  • the blank may in this case be produced, for example, as a zinc, aluminum or magnesium die cast part.
  • the blank can be designed as a plastic workpiece, which can be produced for example by means of plastic injection molding.
  • the blank is received on a after the die casting with the same integrally connected support frame to the goods carrier.
  • the support frame comprises the frame and a number of frame webs, wherein the support frame can be received over a number of arranged on the frame and / or the frame webs recesses or at a free end of the main web web.
  • a number of components can be attached on a goods carrier.
  • a copper coating is applied to the blank and then a nickel coating is applied to the copper coating and then a chromium coating is applied to the nickel coating.
  • a chromium coating is applied to the nickel coating.
  • a first layer of cyan copper is applied to the blank and then a second layer of acidic copper is applied to the first layer to form the copper coating.
  • the blank is insulated or encapsulated by the application of the cyan copper layer and protected from attack by the acid copper layer.
  • the acidic copper layer then serves as a base layer for applying the nickel coating.
  • the second layer of the copper coating is formed as a thick layer with a layer thickness between 10 .mu.m and 50 .mu.m.
  • the blank obtained with the copper coating thus obtains a uniform surface which is suitable as the basis for the subsequent nickel coating and the subsequent chromium coating. Since unevenness and flaws are leveled or leveled by the thick copper layer, can be dispensed with the polishing of the blank after casting. Furthermore, due to the thick electroplated layer and the provision of the frame, very close tolerances on the functional geometries and on the decorative visible surfaces can be maintained.
  • the second layer has a layer thickness between 20 ⁇ m and 50 ⁇ m, preferably a layer thickness between 15 ⁇ m and 30 ⁇ m.
  • a device for casting a workpiece 1 after the Figures 1 and 2 has a mold 2 for forming a mold cavity 3 and the mold cavity 3 at least partially surrounding the frame adjacent side space 4.
  • a casting channel 5 designed as a main casting channel and feed channels 6, 7 leading from the main casting channel 5 to the cavity 3 and the secondary chamber 4 are arranged in the molding tool 2.
  • a first feed channel 6 attaches the mold cavity 3 to the main pouring channel 5.
  • a second feed channel 7 connects the secondary chamber 4 with the main pouring channel 5.
  • the first feed channel 6 assigned to the mold cavity 3 has a smaller cross section compared to the second feed channel 7 assigned to the secondary chamber 4.
  • the frame-shaped secondary space 4 completely surrounds the mold cavity 3 in the present example.
  • the auxiliary space 4 extends in an extension plane E of the mold cavity 3.
  • the mold 2 is preferably made of a hard metal and has a high stability and durability due to low wear. On the Forming of the mold 2 by passing heating or cooling channels for temperature control of the mold 2 is omitted in the present example.
  • the finished in the mold 2 workpiece 1 and in particular a molded in the cavity 3 blank 10, which is part of the workpiece 1 and from which after casting in further processing steps, the finished component 100 is made, are so small and filigree that the introduction of heating or cooling channels and the temperature of the mold 2 is extremely complex and costly.
  • the mold 2 is formed in four parts in the present case. It has four slides 8.1, 8.2, 8.3, 8.4, which can be spent by preferably linear adjustment of the illustrated casting position of the mold 2 in an opening position, not shown, the same. At the contact surfaces of the slide 8.1, 8.2, 8.3, 8.4 dividing planes are formed. A side of the mold cavity 3 facing the first feed channel 6 and a side of the secondary chamber 4 facing the second feed channel 7 are at least partially flat and lie in one of a first slide 8.1, a second slide 8.2 and a third slide 8.3 or a fourth slide 8.4 formed separating plane.
  • the molding tool 2 is designed as a multiple tool. In the mold 2, two mold cavities 3 and two surrounding cavities 4 surrounding the mold cavities 3 are formed. Of course, the mold 2 may also be formed as a single tool or as a multiple tool with more than two mold cavities 3.
  • the cast in the mold 2 workpiece 1 is preferably made of one piece, regardless of the number of mold cavities 3 and the side rooms 4.
  • melt via not shown leads into the main pouring channel 5 and from there via the first and second feed channel 6, 7 introduced into the mold cavity 3 and the side room 4.
  • the melt is formed, for example, from a zinc alloy, wherein the zinc is added to about 4% aluminum and about 1% copper (ZnAl4Cu1). Due to the different cross sections of the first feed channel 6 and the second feed channel 7 and the associated different flow resistances, first a first part of the melt flows through the second feed channel 7 into the side room 4 to form a frame 11 surrounding the blank 10 of the workpiece 1. Then flows a second part of the melt through the first supply channel 6 into the mold cavity 3. The melt there cooled forms the blank 10.
  • the auxiliary space 4 is filled via the second feed channel 7 and then the mold cavity 3 via the first feed channel 6, it is ensured that only flowed out of the temperate storage container, optimally tempered melt is introduced into the mold cavity 3.
  • the Hauptg fingerkanal 5 with the storage container connecting leads 6, 7 stored residual melt from the previous casting process is used in contrast to form the frame 11. Since the residual melt present in the supply lines has cooled since leaving the temperature-controlled storage container, a not optimally formed, at least locally insufficiently homogeneous melt collects in the secondary space 4 to form the frame 11.
  • the mold cavity 3, is heated to an optimum temperature only during the time each casting from the storage container removed melt filled.
  • the blank 11 has thereby a particularly high homogeneity.
  • the frame 11 surrounds the blank 10 in the plane E thereof in a closed manner.
  • the frame 11 is spaced from the blank 10.
  • a distance a between the blank 10 and the frame 11 is between 1 mm and 10 mm.
  • the distance a between the blank 10 and the frame 11 is less than 5 mm and chosen to be substantially uniform.
  • the distance a is selected to be substantially uniform when a minimum distance and a maximum distance are less than 3 mm difference.
  • the frame 11 and / or the support frame 12 have a number of recesses 16 which are arranged distributed on the frame 11 and the support frame 12.
  • the recesses 16 are preferably formed arcuate or semicircular.
  • the semifinished product 1 can be attached in a particularly simple manner to a goods carrier, not shown. With the product carrier, a number of semifinished products 1 can be introduced into a galvanic deposition device for the deposition of a metallic surface layer. Likewise, the semifinished product 1 on the main frame web 13, for example on a free end 17 of the same, gripped and recorded on the goods carrier.
  • a rear side 18 of the blank 10 facing the first carrier web 14 and a rear side 19 of the frame 11 facing the second carrier web 15 are formed at least in sections and lie in a common plane which is defined by a parting plane of the forming tool 2 and parallel to the plane of extent E of the blank 11 extends.
  • An at least partially bent running, the rear side 18 opposite top 20 of the blank 10 is set back relative to a top 21 of the frame by a supernatant x, that is arranged indented.
  • the fixing elements 22 are used for fastening and / or positioning of the component 100 produced from the blank 10 by means of downstream processing steps on a further component, not shown.
  • the webs 23 have an at least partially planar formed clamping surface 24.
  • the webs 23 with the clamping surfaces 24 causes the semifinished product 1 when opening the mold 2 in a defined position on one of the slides 8.1, 8.2, 8.3, 8.4 is held. This prevents an undefined falling out of the semifinished product 1 from the mold 2 and ensures that the semifinished product 1 can be automatically gripped and removed.
  • the blank 10 is surface-coated.
  • the blank 10 held on the support frame 12 is placed with the product carrier in a galvanic bath, without having been previously polished.
  • a copper coating 31 is first applied.
  • a nickel coating 32 is then applied to the copper coating 31 and then a chromium coating 33 is applied to the nickel coating 32.
  • the copper coating 31 consists of a first layer 34 and a second layer 35.
  • the first layer 34 is a cyan copper layer for encapsulating the blank 10 and protecting it from reacting with the second layer 35, which is formed as an acidic copper layer.
  • a thickness D1 of the first layer 34 is typically 2 ⁇ m to 4 ⁇ m.
  • the thick copper layer 35 By applying the thick copper layer 35 to the cyan copper layer 34, imperfections and unevenness of the surface 30 of the blank 10 are leveled. As a result, the finished copper coating 31 on a surface finish, which could previously only be achieved if the blank 10 was polished in an additional process step prior to the application of the copper coating 31 or otherwise cleaned or post-processed.
  • Partly responsible here is the particularly homogeneous structure of the blank 10, which is formed, since only ideal temperature melt is introduced to produce the blank 10 in the mold cavity 3 of the mold 2. As a result, the blank 10 already after casting on a high surface quality and an optimal microstructure.
  • the first carrier web 14 of the semifinished product 1 is severed and thereby the component 100 is obtained. Since the first carrier web 14 of the rear side 18 of the component 100 assigned and arranged in the region of a anyway projecting from the back 18 fixing element 22 is, can be dispensed with a post-processing of the separation point.
  • the component 100 may be formed, for example, as a decorative component, in particular as a decorative component for vehicle closing devices.
  • a decorative component in particular as a decorative component for vehicle closing devices.
  • the component 1 can be engraved, in particular laser-engraved. It is likewise possible to carry out further method steps before, during or after the application of the metallic surface.
  • the invention offers particular advantages when the component is designed as a small part 100.
  • the temperature of the mold 2 is at least consuming and expensive, if not impossible.
  • the filling of the mold cavity 1 with an equally homogeneous and ideally tempered melt is therefore of particular importance in the case of small parts 100.
  • a small part 100 here is any component that is produced by casting, in particular die casting and whose shape due to the small size of the blank 10 and the semifinished product 1 is not or only with considerable effort tempered, that is heated and / or cooled.
  • Indications for defining a small part may moreover be a weight of less than 50 g, preferably less than 10 g, a maximum component dimension of less than 5 cm, preferably less than 2 cm or a component surface 30 of less than 10 cm 2 be less than 5 cm 2 .

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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)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (16)

  1. Dispositif pour mouler un produit semi-fini (1), en particulier une pièce moulée sous pression en zinc, qui présente un outil de moulage (2) par lequel au moins un canal de coulée (5) pour l'alimentation d'une fonte, une cavité de moule (3) pour recevoir une première partie de la fonte et au moins un espace adjacent (4) pour recevoir une deuxième partie de la fonte sont formées, caractérisé en ce
    - que l'espace adjacent (4) entoure la cavité de moule (3) sous la forme d'un cadre et complètement de sorte que, lorsque le produit semi-fini (1) est moulé, une pièce brute (10) est moulée dans la cavité de moule (3) et un cadre (11) est moulé dans l'espace adjacent (4), le cadre (11) entourant la pièce brute (10) en forme de cadre à une distance de 1 à 10 mm et recouvrant la pièce brute (10) complètement et sur toute son épaisseur, les dos (18, 19) de la pièce brute (10) et du cadre (11) se trouvant dans un plan commun défini par un plan de séparation de l'outil de moulage (2), et un côté supérieur (21) du cadre (11) opposé au dos (19) faisant saillie au-delà d'un côté supérieur (20) de la pièce brute (10) opposé au dos (18), et
    - que des canaux d'alimentation (6, 7) de l'outil de moulage (2), qui sont séparés l'un de l'autre, conduisent du canal de coulée (5) conçu comme canal de coulée principal, respectivement à la cavité de moule (3) et à l'espace adjacent (4), un premier canal d'alimentation (6) associé à la cavité de moule (3) ayant une section transversale plus petite par rapport à un second canal d'alimentation (7) associé à l'espace adjacent (4), et le canal de coulée principal (5), le premier canal d'alimentation (6) et le second canal d'alimentation (7) étant conçus de telle sorte que lorsque le produit semi-fini (1) est moulé, la fonte qui y est refroidie forme une entretoise de support principal (13) correspondant au canal principal de coulée (5), une première entretoise de support (14) reliant la pièce brute (10) à l'entretoise de support principal (13) et une deuxième entretoise de support (15) reliant le cadre (11) à l'entretoise de support principal (13).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'outil de formage (2) est formé d'un métal dur.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'outil de moulage (2) comporte quatre coulisseaux (8.1, 8.2, 8.3, 8.4).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce qu'un certain nombre de cavités de moule (3) sont formées par l'outil de moulage (2), dont chacune est entourée d'un espace adjacent (4) sous la forme d'un cadre et sur toute sa circonférence, à partir d'un canal de coulée principal commun (5), une pluralité de premiers canaux d'alimentation (6) conduisant au nombre de cavités de moule (3) et une pluralité de seconds canaux d'alimentation (7) conduisant aux espaces adjacents (4).
  5. Produit semi-fini (1) pour la fabrication de pièces galvanisées (100), en particulier de pièces décoratives ou similaires, fabriqués avec un dispositif pour mouler selon l'une des revendications 1 à 4, avec une pièce brute (10) et un cadre (11), qui entoure la pièce brute (10) en forme de cadre à une distance de 1 à 10 mm et qui recouvre la pièce brute (10) complètement et sur toute son épaisseur, les dos (18, 19) de la pièce brute (10) et le cadre (11) se trouvant dans un plan commun, défini par un plan de séparation d'un outil de moulage (2) du dispositif pour mouler, et un côté supérieur (21) du cadre (11) opposé au côté arrière (19) faisant saillie au-dessus d'un côté supérieur (20) de la pièce brute (10) opposé au dos (18), la pièce brute (10) étant reliée à une entretoise de support principal (13) par l'intermédiaire d'une première entretoise de support (14) et le cadre (11) étant relié à l'entretoise de support principal (13) par l'intermédiaire d'une deuxième entretoise de support (15).
  6. Produit semi-fini (1) selon la revendication 5, caractérisé en ce que l'entretoise de support principal (13), la première entretoise de support (14) et la deuxième entretoise de support (15) forment avec le cadre (11) un cadre de support (12), au moyen duquel le produit semi-fini (1) peut être fixé à un support de produit au moyen duquel le produit semi-fini (1) peut être introduit dans un dispositif de dépôt galvanique.
  7. Produit semi-fini (1) selon la revendication 6, caractérisé en ce qu'un certain nombre de cavités (16) sont disposées sur le cadre de support (12) pour recevoir le produit semi-fini (1) sur le support de produit.
  8. Produit semi-fini (1) selon l'une des revendications 5 à 7, caractérisé en ce qu'un certain nombre de nervures (23) font saillies du cadre (11), les nervures (23) avec une surface de serrage (24) de celles-ci contre-dépouillent le plan commun des dos (18, 19) de la pièce brute (10) et du cadre (11) au moins par sections.
  9. Procédé de fabrication d'une pièce (100), en particulier d'une pièce décorative, un produit semi-fini (1) selon l'une des revendications 5 à 8 étant fabriqué par coulée sous pression avec un dispositif selon l'une des revendications 1 à 4.
  10. Procédé selon la revendication 9, caractérisé en ce qu'après la coulée sous pression du produit semi-fini (1), un matériau métallique est déposé par galvanoplastie sur une surface de la pièce brute (10) du produit semi-fini (1), le produit semi-fini (1) étant maintenu sur un support de produit immergé dans un dispositif de dépôt par galvanoplastie.
  11. Procédé selon la revendication 10, caractérisé en ce que la pièce brute (10) est reçue au moyen d'un cadre de support (12) du produit semi-fini (1) par l'intermédiaire d'un certain nombre de cavités (16) du cadre de support (12) ou à une extrémité libre (17) d'une entretoise de support principal (13) du cadre de support (12) sur le support de produit.
  12. Procédé selon la revendication 10 ou 11, caractérisé en ce que le produit semi-fini (1) est introduit dans le dispositif de dépôt galvanique sans polissage préalable de la pièce brute (10).
  13. Procédé selon l'une des revendications 10 à 12, caractérisé en ce que, pour le revêtement de surface de la pièce brute (10), d'abord un revêtement de cuivre (31) sur la pièce brute (10), puis un revêtement de nickel (32) sur le revêtement de cuivre (31), puis un revêtement de chrome (33) sur le revêtement de nickel (32) sont appliqués.
  14. Procédé selon la revendication 13, caractérisé en ce qu'une première couche (34) de cuivre cyano est appliquée sur la pièce brute (10), puis une seconde couche (35) de cuivre acide est appliquée sur la première couche (34) pour former le revêtement de cuivre (31).
  15. Procédé selon la revendication 14, caractérisé en ce que la seconde couche (35) est formée sous la forme d'une couche épaisse avec une épaisseur de couche (D2) comprise entre 10 et 50 µm.
  16. Procédé selon l'une des revendications 10 à 15, caractérisé en ce qu'après que le produit semi-fini (1) a été galvanisé, la première entretoise de support (14) du produit semi-fini (1), qui est la seule entretoise (13, 14, 15) reliant la pièce brute (10) à l'entretoise de support principal (13), est séparée et la pièce (100) est ainsi obtenu.
EP10193824.9A 2009-11-11 2010-12-06 Composant, notamment composant de décoration, ainsi que dispositif, procédé et demi-produit pour la fabrication de celui-ci Active EP2332672B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009052497.5A DE102009052497B4 (de) 2009-11-11 2009-11-11 Bauteil, insbesondere Dekorationsbauteil, sowie Vorrichtung, Verfahren und Halbzeug zur Herstellung desselben

Publications (3)

Publication Number Publication Date
EP2332672A2 EP2332672A2 (fr) 2011-06-15
EP2332672A3 EP2332672A3 (fr) 2016-10-05
EP2332672B1 true EP2332672B1 (fr) 2018-05-30

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EP10193824.9A Active EP2332672B1 (fr) 2009-11-11 2010-12-06 Composant, notamment composant de décoration, ainsi que dispositif, procédé et demi-produit pour la fabrication de celui-ci

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EP (1) EP2332672B1 (fr)
DE (1) DE102009052497B4 (fr)
ES (1) ES2674586T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549756C3 (de) * 1975-11-06 1980-07-10 J. G. Schroedel Ideal-Sport- U. Spiele-Fabrik, 8500 Nuernberg Zinngießform
JP2002045956A (ja) * 2000-05-22 2002-02-12 Hitachi Ltd 電子機器筐体及びその製造方法
DE20017765U1 (de) * 2000-10-17 2000-12-28 Lin Liken Metallgießform mit Überlaufräumen
JP2002160041A (ja) * 2000-11-24 2002-06-04 Sanyo Electric Co Ltd 金属薄肉成形体用金型およびそれを用いた金属薄肉成形体の製法
DE10330765A1 (de) * 2003-07-07 2005-02-03 Tesma International Inc., Concord Verfahren zum Druckgießen von Gußstücken sowie Druckgießform hierfür
ATE497033T1 (de) * 2006-02-27 2011-02-15 Hdo Druckguss Und Oberflaechentechnik Gmbh Verfahren zur herstellung eines geprägten und galvanisierten druckgussbauteils
EP2085503A1 (fr) * 2008-01-31 2009-08-05 HDO -Druckguss- und Oberflächentechnik GmbH Procédé et dispositif destinés à la fabrication de composants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
DE102009052497B4 (de) 2014-01-16
DE102009052497A1 (de) 2011-05-12
EP2332672A3 (fr) 2016-10-05
EP2332672A2 (fr) 2011-06-15
ES2674586T3 (es) 2018-07-02

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