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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
  • B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
  • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
  • B23K26/355—Texturing
• • 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
  • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
  • B29C70/681—Component parts, details or accessories; Auxiliary operations
  • B29C70/683—Pretreatment of the preformed part, e.g. insert
• • 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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
  • B29C2045/1486—Details, accessories and auxiliary operations
  • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
• • 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
  • B29K2081/00—Use of polymers having sulfur, with or without nitrogen, oxygen or carbon only, in the main chain, as moulding material
  • B29K2081/04—Polysulfides, e.g. PPS, i.e. polyphenylene sulfide or derivatives thereof
• • 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
  • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
  • B29K2101/12—Thermoplastic materials
• • 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
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
• • 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
  • B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
  • B29K2305/02—Aluminium
• • 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
  • B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
  • B29K2309/08—Glass
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Definitions

• the invention relates to a component assembly according to the preamble of claim 1 and to a method for producing a component assembly according to the preamble of claim 11.
• the encapsulation of metal parts with plastic is known, wherein macroscopic structures with undercuts, such as ribs or a waffle structure, are provided on the metal parts in order to enable a positive connection with the plastic material.
• macroscopic structures with undercuts such as ribs or a waffle structure
• the thermosplastic synthetic materials used do not adhere to the metal, a skilful use of shrinkage stresses initially makes it possible to achieve gas-tightness of the component assembly.
• this gas-tightness is temporary, especially in the event of temperature and / or load changes or in the event of media influence.
• a metallic flat gasket with at least one metallic gasket layer is known.
• the metallic gasket layer is provided with a surface structure produced by means of laser radiation, onto which elastomeric material is applied.
• the invention has for its object to produce an alternative component composite, which is characterized by a special robustness.
• the component composite should be reliable and permanently gas-tight.
• the composite component for connecting a component made of a thermoplastic material with another component, in particular by encapsulation be suitable.
• the object is to propose a method for producing a correspondingly optimized component assembly.
• the invention is based on the idea of structuring the surface of the first component of the component composite prior to the joining of the two components using electromagnetic radiation such that a surface structure results, which has a nanostructure in addition to a microstructure.
• the nanostructure is to be arranged such that it is located on the microstructure, that is to say in such a way that the microstructure is superimposed by the nanostructure.
• Such a surface-structured component ensures in a component composite improved adhesion between the at least two adjacent components, it being particularly preferred if the two abutting components, in particular in a region outside the surface structure of the first component are positively connected to one another to obtain a robust component composite.
• the positive connection is produced by at least partial encapsulation, wherein in this case an increased strength and tightness even after the temperature and / or load changes and / or media storage is achieved by the addition to the form-fit, based on the surface structure adhesion.
• the arrangement of a surface structure formed as described in a component composite ensures with appropriate component material a gas tightness, which has stock even with temperature and / or load changes and in particular, aggressive media influence.
• the component composite formed according to the concept of the invention is particularly suitable for a component combination in which at least one of the components is formed from a thermoplastic material. It is also an embodiment with thermosetting plastic feasible.
• microstructure elements of the microstructure have a diameter of a size range between approximately 1 ⁇ m and approximately 999 ⁇ m.
• the nanostructure elements of the nanostructure additionally or alternatively have a diameter of a size range between approximately 1 nm and approximately 999 nm.
• electromagnetic radiation as electromagnetic radiation for producing the surface structure.
• an ultrashort pulse laser is used for this purpose, wherein it is further preferred if the surface structure is produced under the influence of a process medium for increasing the efficiency and / or for passivation.
• process gas in particular inert gas is used.
• the process gas is helium or argon, which prevents the formation of an oxide layer on the first, preferably made of steel or aluminum component.
• the radiation wavelength of the electromagnetic radiation used is selected from a value range between approximately 10 nm and approximately 11 ⁇ m. Most preferably, the wavelength is selected from a wavelength range between about 200 nm and about 1500 nm. Additionally or alternatively, it is preferable to select the radiation pulse duration, in particular the laser pulse duration, from a value range between about 10 fs to about 10 ⁇ s, particularly preferably between about 100 fs and about 100 ps.
• first component made of metal, in particular steel
• second component made of plastic, in particular of thermoplastic or thermosetting plastic
• first component of the second At least partially, preferably completely, made of plastic component for producing a positive connection
• the invention is not limited to such a component pairing. It is particularly preferred if the first component, at least in sections, is preferably made entirely of metal and / or ceramic and / or plastic and / or semiconductor material and / or the second component, at least in sections, preferably completely made of plastic. The adhesion caused by the surface structure thereby produces a particularly reliable, firm connection, which is particularly preferably supported by a positive fit.
• first and the second component at least approximately, have the same coefficients of thermal expansion in order to be able to ensure a leak-tightness even more reliably in the event of temperature fluctuations.
• the component composite is part of a fuel injection system. It is also possible to form a stamped grid, in particular in a control unit, in a sensor or in an electrical plug with a component assembly described above. It is particularly preferred if the component composite is formed as a plastic-coated (metal) bush, which preferably serves for fastening a plastic housing. Furthermore, it is advantageous if the component composite is part of a flex conductor or an overmolded ceramic part, in particular for a lambda probe of an internal combustion engine.
• the invention also leads to a method for producing a component composite, in particular a component composite described above.
• the method comprises structuring a contact surface of a first component before joining the first component to a second component.
• the core of the method according to the invention is that a surface structure is created on the first component, which has a microstructure superimposed by a nanostructure, in order to thus improve the strength and / or the tightness of the resulting compound.
• the surface structuring is carried out with the aid of electromagnetic radiation, preferably under the influence of a process medium, in particular under a process gas atmosphere, in order to chemically modify the component surface, for example to passivate it, and to increase the structuring efficiency.
• an ultrashort pulse laser is used to generate the surface structure.
• the second component is positively connected to the first component, preferably by encapsulation of the first component, in order to ensure a stable positive connection in addition to the adhesion resulting from the surface structuring.
• the structured first component is stored under inert gas, in particular under a nitrogen atmosphere, at least until the second component is joined in order to avoid oxidation of the surface structure.
• the joining of the second component takes place, in particular by at least partially encapsulating the first component, under an inert gas atmosphere or vacuum.
• FIG. 1 shows a perspective view of a first component with a surface structure
• Fig. 2 an enlarged, the surface structure schematically performing
• FIG. 3 shows a component composite, in a sectioned side view, comprising the first component shown in FIG. 1 and a second component.
• FIG. 1 shows a first component 1 as part of a component composite 2 shown in FIG.
• the first component 1 is formed from an aluminum alloy and comprises a first contact surface 3 with which the first component 1 in the component assembly 2 shown in FIG. 3 is attached to a second component 4, more precisely to a second contact surface 5 of the second Component 4, applied.
• the first component 1, more precisely the first contact surface 3, is provided with a surface structure 6. This is shown schematically in Fig. 2 in an enlarged view. As can be seen from FIG. 1, the first contact surface 3 is provided over the entire surface with the surface structure 6.
• the surface structure 6 shown in FIG. 2 comprises a microstructure 7 with beaded and / or recessed microstructure elements 8.
• the microstructure elements 8 are provided with nanostructure elements 9 and a nanostructure 10, which is also located in the region outside the microstructure elements 8.
• adhesive forces act between the first component 1 and the second component 4 in the component assembly 2 shown in FIG. 3.
• the unstructured first contact surface 3 is irradiated by means of a pulsed laser beam.
• the laser beam is deflected by means of a scanner system in such a way that it scans the region of the first component 1 to be structured.
• a femtosecond, picosecond or nanosecond laser preferably with a high pulse repetition frequency, can be used to generate the desired surface structure.
• the structuring process for producing the surface structure 6 shown in FIG. 2 is preferably carried out under process gas in order to influence the formation of an oxide layer on the first component 1 formed from aluminum or steel.
• the feed with which the laser beam moves relative to the first component 1 on the first contact surface 3 is preferably between 100 mm / s and 10,000 mm / s.
• the first component 1, more precisely the first contact surface 3 with its surface structure 6, is overmolded with the second component 4, which consists of thermoplastic material.
• the positive connection between the two components 1, 4 is ensured by the fact that the second component 4 surrounds a peripheral collar 11 of the first component 1.
• the second component 4 is particularly preferred on the first component 1, for example, from the second component 4 overmolded tabs, etc.
• the second component 4 is particularly preferred.
• the second component 4 made of glass fiber and / or mineral-reinforced plastics, preferably thermoplastics or thermosets, more preferably made of thermoplastic materials with 30 to 60 weight percent glass fiber and / or mineral content.
• component compounds based on polyphenylene sulfide are suitable for component assemblies under the influence of media.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Plasma & Fusion (AREA)
• Chemical & Material Sciences (AREA)
• Composite Materials (AREA)
• Manufacturing & Machinery (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Laser Beam Processing (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (6)

Cited By (3)

Families Citing this family (66)

Citations (3)

Family Cites Families (17)

• 2008
  • 2008-07-28 DE DE102008040782A patent/DE102008040782A1/de not_active Withdrawn
• 2009
  • 2009-07-28 EP EP09781155A patent/EP2307187B1/de active Active
  • 2009-07-28 JP JP2011520461A patent/JP5642069B2/ja active Active
  • 2009-07-28 US US12/737,566 patent/US20110177286A1/en not_active Abandoned
  • 2009-07-28 CN CN200980129355.8A patent/CN102105290B/zh active Active
  • 2009-07-28 WO PCT/EP2009/059701 patent/WO2010012705A1/de not_active Ceased

Patent Citations (3)

Non-Patent Citations (3)

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