WO2008067961A2 - Procédé de fabrication d'un outil de moulage comportant une couche anti-usure - Google Patents

Procédé de fabrication d'un outil de moulage comportant une couche anti-usure Download PDF

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Publication number
WO2008067961A2
WO2008067961A2 PCT/EP2007/010431 EP2007010431W WO2008067961A2 WO 2008067961 A2 WO2008067961 A2 WO 2008067961A2 EP 2007010431 W EP2007010431 W EP 2007010431W WO 2008067961 A2 WO2008067961 A2 WO 2008067961A2
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WO
WIPO (PCT)
Prior art keywords
mold
layer
wear protection
protection layer
wear
Prior art date
Application number
PCT/EP2007/010431
Other languages
German (de)
English (en)
Other versions
WO2008067961A3 (fr
Inventor
Steffen BÜRKNER
Dietrich P. Jonke
Martin Englhart
Original Assignee
Eads Deutschland 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 Eads Deutschland Gmbh filed Critical Eads Deutschland Gmbh
Publication of WO2008067961A2 publication Critical patent/WO2008067961A2/fr
Publication of WO2008067961A3 publication Critical patent/WO2008067961A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3807—Resin-bonded materials, e.g. inorganic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0087—Wear resistance

Definitions

  • the invention relates to the use of molds for the production of molded parts and in particular the production of such molds, which are used for the production of fiber composite components.
  • the surface contour of a component made with a molding tool is determined by a corresponding molding surface of the molding tool. Wear phenomena on this mold surface of the tool thus inevitably lead to a deterioration in quality of the manufactured components or to a production of rejects.
  • CFRP carbon fiber reinforced plastic
  • CFRP Femis CFRP Femis
  • CFRP tools have an average life of about 50 to 80 cycles. Even within this short lifetime, frequent repairs are necessary, i. H. the damaged areas are worked out and then filled with a special repair system. Then the surface has to be sanded and polished. The service life of the tool decreases with each repair.
  • this object is achieved by a method for producing a composite formed from a fiber composite with a wear protection layer on a molding surface of the mold, wherein the wear protection layer and / or an adhesion promoting layer for the wear protection layer is constructed by thermal spraying.
  • thermal spraying here refers to a surface coating technique in which a spray material in the form of thermal energy softened or molten particles is applied to the surface to be coated, wherein the deposited particles re-form on the surface solidify and thus form an additional material layer (wear protection layer and / or adhesion-promoting layer for this).
  • an energy source for supplying the softening or melting of the spray material can, for.
  • a fuel gas-oxygen flame, an electric arc, a plasma jet or a laser beam are used.
  • suitable spray guns where the spray material z. B. in powder form or as a wire or rod is also known from the prior art and can thus be used advantageously within the scope of the invention.
  • a spray gun z. B. be charged with a powder which has a precisely set grain size distribution.
  • wire or rod flame spraying in which the sprayed material supplied as wire or rod is continuously melted in a fuel gas (eg acetylene) oxygen flame, with the aid of a nebulizer gas (eg compressed air or nitrogen) droplet-shaped spray particles are removed and spun onto the surface to be coated.
  • a fuel gas eg acetylene
  • a nebulizer gas eg compressed air or nitrogen
  • a powder flame spraying in which a powdered spray material in a fuel gas-oxygen flame on or melted and is thrown with the aid of the expanding combustion gases on the surface to be coated.
  • a additional gas eg argon or nitrogen
  • argon or nitrogen may be used to accelerate the particles to the surface.
  • a high-speed flame spraying in which a continuous gas combustion with high pressures in a combustion chamber, in the central axis of a powdered spray material is supplied, whereby the spray particles are accelerated to very high speeds ,
  • This variant is often particularly advantageous for creating a particularly dense sprayed coating.
  • an arc spraying in which two wire-shaped spray materials are melted in an arc formed between the wire ends and spun on the surface to be coated by means of a Zerstäubergases.
  • This variant can be advantageously used in particular when using a metallic spray material.
  • the mold surfaces passing in contact with the material to be molded during the manufacturing process of the mold components can be provided with a wear protection layer in a simple manner, namely by the thermally sprayed coating.
  • the coating built up by thermal spraying can directly form the wear protection layer, which comes into contact with the material to be molded in the later production of the molded components.
  • this coating can form an adhesion-promoting layer between the wear-resistant layer and the base material (fiber composite) of the molding tool.
  • the fiber composite of CFRP is formed. This has the particular advantage that the mold At low cost, lightweight and extremely dimensionally stable can be produced.
  • the mold is provided for the production of fiber composite components, in particular for the production of CFRP components.
  • a fiber composite material is a composite material which generally consists of two major components, namely a matrix and fibers embedded therein. By mutual interactions of these components, the material contains higher quality properties than either of the two components involved individually.
  • a mold z. B. for compacting and / or curing (usually thermal curing) of a with a matrix material (eg resin) infiltrated fiber material can be used.
  • a matrix material eg resin
  • Damage can be avoided in a mold according to the invention, however, formed by the production formed in the wear protection layer, which prolongs the service life of the tool considerably.
  • CFRP components and a corresponding CFRP molding tool usually contain a similar or similar resin system.
  • the high chemical affinity of the resins in question leads to caking and chemical bonds among one another.
  • increased demoulding forces are required which lead to mold damage as well as component damage. Damage may result.
  • this problem can be eliminated by the wear protection layer provided according to the invention.
  • the thermal spraying is carried out with a metal or a metal alloy, be it for the construction of an optionally provided adhesion-promoting layer or for the construction of the wear-protection layer.
  • the wear protection layer is formed of an alloy of iron and nickel, wherein the Nikkelanteil is preferably in the range of 30% to 40%, in particular about 36%.
  • Such materials are z. B. as "Nickel 36", “Invar 36” and “Pernifer 36” sold commercially.
  • the last-mentioned metal alloys are relatively expensive and difficult to work, so that z. B. molds made directly from such metal alloys would be correspondingly expensive.
  • a dimensionally stable and inexpensive base material of the molding tool fiber composite
  • such a metal alloy as wear protection.
  • wear protection layer is built up directly by the thermal spraying, so z.
  • Nickel 36 a robot-guided spray gun as a powder or wire, depending on the required layer properties, are supplied.
  • similar similar materials such as by appropriate powder admixtures.
  • suitable choice of or The spray materials and the spraying method used can be used to place particularly adherent surface coatings.
  • the wear-resistant layer is built up on the surface of the fiber composite by thermal spraying, be it with or without special adhesion-promoting layer arranged underneath, which likewise can be constructed advantageously by thermal spraying.
  • the wear protection layer is first provided on a mold surface of a "primitive tool" for forming the mold from the fiber composite and then transferred from the mold surface of the primary tool to the mold surface of the mold as the mold is formed.
  • This wear protection layer is not built up directly at the place of their use, but separately.
  • This wear protection layer is "molded” or “laminated off” from the original tool during the molding process in which the molding tool is produced.
  • the wear protection layer is applied as a sheet or foil (for example made of metal) to the mold surface of the primary tool and the wear protection layer is provided with an adhesion-promoting layer by thermal spraying before or after application.
  • the wear protection layer is built up by thermal spraying on the mold surface of the primary tool.
  • the built-up by the thermal spraying coating has a coefficient of thermal expansion, which at most slightly different from that of the base material of the mold (fiber composite, eg CFRP), preferably to less than 10% different.
  • thermal spraying provided according to the invention, relatively large coatings (for example greater than 1 square meter) with layer thicknesses of up to several millimeters can advantageously also be realized. In most cases, layer thicknesses in the range of less than 1 mm are sufficient to form an adhesion-promoting layer or wear-resistant layer.
  • thermal spraying is provided for the direct construction of the wear protection layer on the surface of the fiber composite, it is advantageous if a pre-treatment of the mold surface takes place beforehand, for example in order to improve the adhesion of the spray material (if no separate adhesion-promoting layer is provided).
  • the pretreatment of the mold surface can, for. B. include a mechanical processing (eg., Grinding, milling, etc.). Also, a blasting process, in particular sand blasting, comes as a mechanical pre-treatment into consideration. Alternatively or additionally, the mold surface z. B. be structured or roughened by means of a laser.
  • the heat input in thermal spraying is generally relatively small, it may be advantageous in some circumstances if the mold surface is cooled during thermal spraying. In very sensitive areas or at very high local coating rates can thus z. B. by targeted cooling critical temperatures and local overheating can be reliably avoided.
  • a grinding or polishing is brought to a desired final contour.
  • the thermal spraying several layers of one or more spraying materials are applied to the relevant mold surface (the tool or the Urwerkmaschines).
  • Such individual layers may differ in the spray material used and / or in the spray parameters selected (eg temperature of the injection molding material, spray rate, etc.).
  • z. B. a particularly adhesive layer directly to the mold surface of the mold and a rather hard and / or for the respective mold component manufacturing process particularly favorable properties having cover layer are provided (eg., A cover layer with anti-adhesive effect for the matrix material with the Mold to be produced fiber composite component).
  • fluoropolymer-containing materials for example, a release-agent-free production of CFRP lightweight structures can be realized.
  • a continuous change of the material and / or the material structure can take place between two adjacent individual layers of a thermally sprayed multilayer coating ("gradient layer").
  • the thermal spraying technique can be used in the coating of CFRP molding tools optionally in application or molding. men.
  • CFRP surfaces can firstly be protected against wear and secondly they can be modified in an anti-adhesive way (optional) to prevent caking of component resin during the manufacture of CFRP components.
  • a metal foil or a metal sheet into the surface of CFK molds by one-sided coating by means of thermal spraying.
  • a permanent release layer may already be baked on the back of the film or sheet (eg, fluoropolymer-based paint system).
  • Fig. 1 is a schematic side view of a mold, to whose
  • Mold surface is built up directly by thermal spraying a wear protection layer
  • FIG. 2 is a view corresponding to FIG. 1 after completion of the construction of the wear-resistant layer
  • FIG. 3 is a schematic side view according to a second embodiment, in which a wear protection layer by thermal
  • Spraying is first established on the mold surface of a priming tool provided with a release agent layer
  • FIG. 4 is a view corresponding to FIG. 3 after completion of the construction of the wear protection layer
  • FIG. 5 illustrates the forming process of a fiber composite by means of the original tool
  • Fig. 7 illustrates a third embodiment in which an adhesion-promoting layer is built up by thermal spraying on a surface of a wear-resistant sheet placed on the mold surface of a master tool;
  • FIG. 8 is a view corresponding to FIG. 7 after completion of the construction of the primer layer
  • Fig. 9 illustrates a forming process of a fiber composite by means of the primary tool
  • Fig. 10 shows the mold produced by the molding process, on the mold surface of which is the wear protection film transferred from the mold surface of the master tool.
  • FIGS. 1 and 2 illustrate the production of a molding tool 10, which is intended for the later production of CFRP components.
  • FIG. 1 shows the still "unprotected" molding tool 10 ', which was provided by compacting and curing a carbon fiber material impregnated with a matrix material (eg resin) (eg a stack of carbon fiber mats). If one were to use this forming tool 10 'formed from a fiber composite (here: CFRP) for mass production of CFRP components whose final contour is determined by the contour of a mold surface 12' of the mold 10 ', the mold surface 12' would become after comparatively few production cycles already wear out considerably.
  • CFRP fiber composite
  • spray material 16 is applied to the unprotected mold surface 12 'by thermal spraying by means of a spray gun 14 (eg, HVOF or arc wire tips).
  • a spray gun 14 eg, HVOF or arc wire tips.
  • a metal alloy here: nickel 36 powder
  • the robot-guided thermal spray gun 14 is melted and sprayed with the robot-guided thermal spray gun 14.
  • the mold surface 12 ' is previously subjected to a pretreatment which increases the adhesion of the subsequently thermally sprayed material 16 to the tool 10' (eg by blasting, laser cleaning, plasma etching, etc.).
  • a pretreatment which increases the adhesion of the subsequently thermally sprayed material 16 to the tool 10' (eg by blasting, laser cleaning, plasma etching, etc.).
  • Such pretreatment can serve in particular for roughening the surface 12 '.
  • the mold 10 ' is actively cooled during the thermal spraying, for example from the underside of the mold (eg water cooling).
  • FIG. 2 shows the result of the thermal spraying process, by which the mold surface 12 'has been designed to overlap a metallic wear protection layer 18.
  • the wear protection layer 18 forms on the side facing away from the fiber composite 10 'a new mold surface 12 of the molding tool 10 finished therewith.
  • a finishing (eg polishing) of the surface 12 is possible.
  • the mold 10 thus does not wear so quickly by the manufacturing cycles performed therewith or by mechanical injury and damage by means of cleaning tools that are required to clean the mold surface 12 after each individual production cycle in the rule. Furthermore, the coating 18 protects the tool 10 from excessive chemical aging or degradation, eg. Due to oxidation at the unprotected surface 12 '.
  • the applied wear protection layer 18 may, for. B. a "pure wear protection” (mechanically very stable), a “pure permanent release layer” (good adhering to the tool, but anti-adhesive with respect to the material to be molded), or a combination of both.
  • a modification of the manufacturing method according to FIGS. 1 and 2 may consist in the fact that the thermal spraying produces a plurality of individual layers one after the other which differ from each other in their chemical composition and / or their microscopic structure.
  • a lowermost coating layer optimized with regard to adhesion can be provided.
  • the above-mentioned pre-treatment of the mold surface 12 ' may be provided, for. B. as a mechanical processing (eg, grinding, etc.). Also, a blasting process, in particular sand blasting, comes as a mechanical pre-treatment into consideration.
  • the mold surface 12 'z. B. be structured or roughened by means of a laser.
  • the mold surface 12 'and 12 is shown in the figures as a simple curved surface for the sake of simplicity of illustration, since the actual shape design has a subordinate meaning.
  • the mold surface 12 'or 12 is usually more or less complicated, in adaptation to the desired component contour designed. It forms the "negative image" of the desired contour of the component surface.
  • a plate-shaped molding tool 10 is shown here. In practice, such a mold 10 usually forms a mold half of a two-part molding tool, in which the impregnated fiber material is enclosed between the two mold halves and optionally pressurized (eg in an autoclave).
  • the body of the mold 10 is made of a cost-effectively produced CFRP fiber composite.
  • CFRP fiber composite As with previously a total of z. B. made of a robust iron-nickel alloy (eg., "Nickel 36") conventional molds is made possible by the described coating of the CFRP fiber composite industrial mass production of the corresponding CFRP components.
  • CFRP components are z. B. can be used advantageously as structural components in aircraft.
  • the mold surface 12 of the described mold 10 may have an area in the range of several square meters.
  • FIGS. 3 to 6 illustrate a second embodiment of manufacturing a molding tool 10a formed by compacting and curing a fiber composite 10a 1 with a wear protection layer 18a forming a molding surface 12a of the tool 10a.
  • the wear-resistant layer 18a is constructed by thermal spraying by means of a spray gun 14a.
  • this structure does not take place directly on a mold surface 12a 'of the fiber composite 10a', but separately therefrom.
  • the wear protection layer 18a is "laminated” during compaction and / or curing of the fiber composite 10 '.
  • a "master mode” eg, aluminum, steel, or polyurethane material
  • a release agent layer 24a For example, by a z. B. liquid or pasty release agent is applied to the surface 22 a.
  • the wear protection layer 18a is built up on the upper side of the release agent layer 24a.
  • FIG. 4 shows the result of the thermal spraying process.
  • the release agent layer 24a At the top of the primary tool 20a is the release agent layer 24a and above the wear protection layer 18a.
  • the release agent layer 24a ensures a relatively low adhesion of the wear protection layer 18a on the tool 20a.
  • FIG. 5 shows how the fiber composite 10a 1 is applied to the thus prepared surface of the primary tool 20a.
  • a semi-finished textile product such.
  • B carbon fiber mats and then impregnated with a resin.
  • the fiber composite 10a 1 is pressed against the forming surface of the master model 20a, thus compacted, and then cured (eg, thermally). This results in the mold 10a.
  • the wear protection layer 18a adheres to the mold surface 12a 1 .
  • the antisplastic layer 18a initially formed on the master 20a by thermal spraying was transferred from the mold surface of the master tool to the mold surface of the tool during the forming process for forming the former 10a.
  • the adhesion between the material of the wear protection layer 18a and the release agent 24a is less than the adhesion to the CFK material of the molding tool 10a (or its resin system).
  • a reworking of the mold surface 12a comes into consideration again.
  • the embodiment according to FIGS. 3 to 6 provides a molding or laminating process in which a thermally sprayed wear protection layer is molded from a "master mold” through the rear structure by means of a laminate structure.
  • a higher adhesion of the thermally sprayed wear protection layer to the composite material of the molding tool can be achieved in comparison to the direct coating (compare FIGS.
  • the result is a mold with "integrated wear contactor".
  • As the spray material 16a in particular metals or metal alloys such. B. "Nickel 36" use.
  • the original tool 20a (master) can be z. B. CFK, steel, AIu or polyurethane materials. Often it is favorable to roughen the shaping surface 22a prior to application of the release agent system or to structure it microscopically (eg by blasting or lasering).
  • a property of the wear protection layer 18a that is certainly advantageous for practice is its high mechanical strength or hardness. Regardless of this, however, in particular an anti-adhesive effect with respect to the material to be formed with the molding tool 10a (eg CFRP resin system) can play a major role for this "functional layer" 18a. This also applies to the embodiment according to FIGS. 1 and 2.
  • the mold surface 12 it is often advantageous if several layers of one or more spray materials are applied to the relevant mold surface by the thermal spraying, be it the mold surface 12 'in the direct coating process according to FIGS. 1 and 2 or the shaping surface 22a in the indirect coating process of the master model (optionally provided with a release agent layer).
  • the additional material eg 16 or 16a
  • a mold-side single layer it may be, for example, B. a layer having particularly good adhesion properties, whereas a second single layer as a later cover layer on the mold has a special anti-adhesive effect for the material to be formed with the tool (eg., Matrix material in the manufacture of fiber composite components).
  • the latter layer may be provided as a "permanent release layer" which resists multiple manufacturing cycles (will not be peeled off again).
  • a permanent separating layer may comprise, for example, fluoropolymers, particulate driers such as Mo, graphite, MoS 2 , hexBN, etc.
  • the rear structure of the thermally sprayed wear protection layer 18a is applied to the primary tool 20a by means of a laminating technique (eg depositing several fiber material layers such as "prepreg layers”).
  • a laminating technique eg depositing several fiber material layers such as "prepreg layers”
  • liquid resin (“Tooling Pre-preg”) penetrates into the preferably porous functional layer, where it forms an adhesive bond by mechanical anchoring with the same.
  • the curing of the mold 10a 'produced as CFRP composite 10a may, for. B. in an autoclave, whereupon the cured composite 10a 1 together with integrated wear protection layer 18a can be separated from the original tool.
  • a post-processing (finishing process) of the wear protection layer 18a constructed by thermal spraying still takes place.
  • Figs. 7 to 10 illustrate a third embodiment of a manufacturing method.
  • a primary tool 20b is initially provided with a release agent layer 24b (optional) and subsequently with a wear protection layer 18b.
  • the wear protection layer 18b is applied here as a prefabricated sheet or as a prefabricated film on the mold surface 22b (or release agent layer 24b) of the original tool 20b.
  • this coating could also be carried out before the sheet or foil 18b is placed on the primary tool 20b.
  • the result of the thermal spraying process is shown in FIG.
  • the release agent layer 24b, the wear protection layer 18b, and the adhesion promoting layer 26b are successively piled up.
  • the thermally sprayed material 16b or the spray parameters used were in this case adjusted so that a particularly good adhesion between the layers 18b and 26b results.
  • the difference between the molding process according to FIGS. 5 and 6 and the molding process according to FIGS. 9 and 10 is that, in the process according to FIGS. 9 and 10, there is between the wear protection layer 18b and the fiber composite 10b 1 is the built-up by thermal spraying bonding layer 26b, which ensures a particularly good adhesion of the separately manufactured wear protection layer 18b on the mold surface of the mold 10b.
  • the intentionally porous spray coating 26b serves as a bonding agent between the fiber composite substrate 10b 1 and the sheet or foil 18b, thus enabling the fiber composite (eg containing epoxy resin) to bond very well during the manufacture of the composite by penetration into the composite Bonding layer 26b.
  • inserts such as.
  • Plastic foils eg etched PTFE foils, temperature-resistant fluoropolymer foils with anti-adhesive properties
  • metal foils eg made of stainless steel
  • metal sheets eg metal sheets or polymer nonwovens
  • nonwovens eg metal nonwovens or polymer nonwovens
  • Example The procedure when using a metal foil or a metal sheet as a wear protection layer in a formed from a CFRP fiber composite mold for the production of CFRP components can be summarized so z.
  • Example as follows: First, for example, already coated on one side by means of thermal spraying metal foil or metal sheet is draped onto the master model. Optionally, it is possible to equip the later functional surface of the mold with an anti-adhesive functional layer. Due to the high stoving temperatures (eg, greater than 300 ° C.) of such an anti-adhesive layer, it is expedient to apply the same before applying the sprayed-on coating as a bonding agent and before embedding it in the CFRP fiber composite.
  • high stoving temperatures eg, greater than 300 ° C.
  • metal foils z. B. by deep drawing on more complex geometries of the relevant form surface to apply.
  • a mold surface coated with wear protection and / or anti-adhesive systems provides protection against injury during necessary cleaning and facilitates such cleaning.
  • a surface protection for simply contoured geometries of the mold surface can be realized very well and with little effort by the embedding of single-sided pretreated films or sheets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne l'utilisation d'outils de moulage pour la fabrication de pièces moulées, notamment la fabrication de tels outils de moulage pour la production de pièces composites moulées. L'invention concerne plus précisément un procédé de fabrication d'un outil de moulage (10) réalisé dans un composite de fibres (10'), présentant une couche anti-usure (18) sur une surface de moulage (12') de l'outil de moulage (10), la couche anti-usure (18) et/ou une couche adhésive destinée à la couche anti-usure étant créées par pulvérisation thermique. Il est ainsi possible d'augmenter considérablement et de façon simple, la résistance à l'usure ou la durée de vie d'outils de moulage réalisés dans un composite de fibres (10') tel que par exemple un plastique renforcé par fibres de carbone.
PCT/EP2007/010431 2006-12-05 2007-11-30 Procédé de fabrication d'un outil de moulage comportant une couche anti-usure WO2008067961A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057640.3 2006-12-05
DE200610057640 DE102006057640A1 (de) 2006-12-05 2006-12-05 Verfahren zum Herstellen eines Formwerkzeugs mit einer Verschleißschutzschicht

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WO2008067961A2 true WO2008067961A2 (fr) 2008-06-12
WO2008067961A3 WO2008067961A3 (fr) 2008-07-24

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Cited By (1)

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CN112339185A (zh) * 2019-08-09 2021-02-09 陈嘉宏 用于制造植物性材质的器具且具有内外套件的公母模构件

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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