WO2013154037A1 - Procédé pour le soudage au laser - Google Patents

Procédé pour le soudage au laser Download PDF

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Publication number
WO2013154037A1
WO2013154037A1 PCT/JP2013/060421 JP2013060421W WO2013154037A1 WO 2013154037 A1 WO2013154037 A1 WO 2013154037A1 JP 2013060421 W JP2013060421 W JP 2013060421W WO 2013154037 A1 WO2013154037 A1 WO 2013154037A1
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WO
WIPO (PCT)
Prior art keywords
metal
laser
resin
pressurizing material
pressurizing
Prior art date
Application number
PCT/JP2013/060421
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English (en)
Japanese (ja)
Inventor
聡 荒井
健史 千田
Original Assignee
株式会社日立製作所
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Filing date
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Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Publication of WO2013154037A1 publication Critical patent/WO2013154037A1/fr

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    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour laser welding
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/245—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool the heat transfer being achieved contactless, e.g. by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
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    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/731—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the intensive physical properties of the material of the parts to be joined
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/026—Chemical pre-treatments
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7422—Aluminium or alloys of aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805—Shape
    • H01L2224/4809—Loop shape
    • H01L2224/48091—Arched

Definitions

  • the present invention relates to a technique for joining resin and metal by laser light irradiation.
  • Thermoplastic resins are widely used in general industrial applications such as automobiles, electrical equipment and medical / bio equipment because of their excellent processability and large degree of freedom in shape. And it has become so popular that it can be said that there is no field where thermoplastic resins are not used. At first, it was used as an alternative to natural materials such as wood and paper, but now many special products that can only be made with plastic materials have been developed. Therefore, if the optimal materials and optimal processing methods can be provided for design and development, there is a possibility of creating new products that have never existed before.
  • thermoplastic resins In addition, due to the recent trend of CO 2 emission restrictions and cost reduction, the replacement of metals is gradually being made along with the higher functionality of thermoplastic resins.
  • thermosetting resins containing carbon fibers are becoming widespread for metal replacement.
  • thermoplastic and thermosetting resins generally have lower heat resistance and mechanical strength than metals, have large thermal expansion, are easily deformed and decomposed, are easily dissolved in organic solvents, and are poorly swelled by moisture. Because there are many points, it is impossible to completely replace them.
  • Patent Document 1 describes that acrylic resin bites into an uneven surface by laser irradiation in a state in which tin having an uneven surface roughened with an acrylic resin and sandpaper is adhered, and a strong bond is formed. Has been.
  • Patent Document 2 by irradiating a high-power laser beam in a state where plastic and metal are superposed, micro bubbles are generated in the vicinity of the plastic interface, and strong bonding is achieved by the pressure effect at the time of generation. It has been shown that you can.
  • Patent Document 3 shows that, in welding between resins, by applying pressure with an infrared transmitting solid (infrared crystal material) having a thermal conductivity of 15 W / mK or more, surface thermal damage is suppressed and welding is performed. Yes.
  • Patent Document 4 it is possible to firmly bond even if the molded body does not transmit laser light by irradiating laser from the metal side in a state where the molded body made of a thermoplastic resin and the metal are overlapped. It is shown. It is also described that the surface treatment of the metal on the bonding surface side is effective for improving the bonding strength.
  • JP 2006-15405 A WO2007 / 029440 JP 2009-101560 A JP 2010-76437 A
  • Patent Document 1 is a particularly effective method when a transparent thermoplastic resin having a transmittance of 70% or more with respect to incident laser light is used. The case is not applicable.
  • thermoplastic resin reaches the thermal decomposition temperature due to the heat transfer of the air existing in the gap in the process until the resin and the metal adhere to each other at the time of laser irradiation, and a large amount of bubbles are formed. There was a problem that it would occur. Therefore, long-term reliability is a concern, and in particular, it has been found that it is difficult to ensure airtightness.
  • Patent Document 4 it is shown that laser irradiation is performed from the metal side to join the thermoplastic resin and the metal, but the method for pressurizing the metal is not described.
  • a pressurizing material composed of metal or ceramics is used, and resin and metal are added from the metal side by a pressurizing material.
  • the pressure material is irradiated with a laser, and heat is transmitted from the pressure material to the resin through the metal to be bonded.
  • the present invention it is possible to perform laser bonding between a resin and a metal, which is not greatly affected by the light absorption rate on the metal surface, and has a short tact, high strength, and no bubbles, and high reliability.
  • thermoplastic resin used in the present invention is made of an amorphous or crystalline resin.
  • Non-crystalline resins include polystyrene (PS), acrylonitrile styrene (AS), acrylonitrile butadiene styrene copolymer (ABS), polyetherimide (PEI), polycarbonate (PC), polyarylate (PAR), and polymethylmethacrylic.
  • Examples include methyl acid (PMMA), cycloolefin polymer (COP), cycloolefin copolymer (COC), polysulfone (PSF), polyethersulfone (PES), polyvinyl chloride (PVC), and polyvinylidene chloride (PVDC).
  • PMMA methyl acid
  • COP cycloolefin polymer
  • COC cycloolefin copolymer
  • PSF polysulfone
  • PES polyethersulfone
  • PVDC polyvinyl chloride
  • polyethylene polyethylene
  • PP polypropylene
  • POM polyoxymethylene
  • PET polyethylene terephthalate
  • PBT polytrimethylene terephthalate
  • PEN polybutylene terephthalate
  • PPS Polyphenylene sulfide
  • PA6 nylon 6
  • PA66 nylon 66
  • PA6T nylon 6T
  • PEEK polyetheretherketone
  • LCP liquid crystal polymer
  • PTFE polytetrafluoroethylene
  • thermoplastic resin In general, an amorphous resin is excellent in moldability and transparency, whereas a crystalline resin is excellent in heat resistance and chemical resistance.
  • thermosetting resin not only a thermoplastic resin but also an epoxy-based thermosetting resin may be used.
  • the colored state of the thermoplastic resin or the thermosetting resin may be any state.
  • metals to be joined include iron, aluminum, copper, nickel, gold, titanium, alloys (stainless steel, brass, aluminum alloys, phosphor bronze, etc.), die casting, etc., and metal coatings (plating, vapor deposition films, etc.). This also applies to other materials. Further, not only metal but also ceramics can be joined.
  • the pressurizing materials used to press the metal materials to be joined include materials such as iron, aluminum, copper, nickel, gold, titanium, alloys (stainless steel, brass, aluminum alloys, phosphor bronze, etc.), die castings, and various ceramics.
  • the surface absorptance must be 70% or more with respect to the incident laser wavelength.
  • Lasers having wavelengths in the infrared region including semiconductor lasers, YAG lasers, and fiber lasers, are effective in terms of cost as the light source used for laser bonding. It may be a wavelength. Further, the intensity distribution of the laser light source can be changed to various intensity distributions depending on attached lenses such as Gaussian, top hat and ring type.
  • Laser bonding conditions determine the laser spot size, power, irradiation time, and applied pressure in consideration of the optical absorption rate, thermal conductivity, heat resistance, and rigidity of the pressurized material at the laser irradiation wavelength of the pressurized material. .
  • FIG. 1 is a plan view showing an embodiment of the resin and metal laser bonding method of the present invention.
  • the upper surface portion of the metal 2 to be joined is pressed with the pressurizing material 10 in a state where the resin 1 and the metal 2 are overlapped, and the pressurizing material 10 has a light absorption rate higher than that of the metal 2 to be joined.
  • a metal or ceramic having a high light absorption rate is used, and the pressure material 10 is irradiated with the laser beam 4 to bond the resin 1 and the metal 2.
  • the laser beam 4 is irradiated from the metal 2, for a metal material having a small light absorption rate, such as aluminum or copper for infrared light, the light absorption rate is increased on the laser irradiation surface of the metal material to be joined. Processing has to be performed, and the increase in cost has been an issue. Further, depending on the product form, there are cases where such treatment cannot be performed or the bonding property is deteriorated, and as a result, there are cases where bonding cannot be performed.
  • the laser light 4 is irradiated at an angle of 10 to 15 ° with respect to the metal 2 to which the laser light source is bonded.
  • the laser junction is less likely to be uniform than when tilted.
  • the present inventors use a metal or ceramic having a high light absorption rate as the pressure material 10 and irradiate the laser beam 4 without tilting the pressure material 10.
  • heat conduction was caused in the metal 2 to be joined via the pressurizing material 10 and the resin 1 and the metal 2 could be joined with high strength and uniformity.
  • SUS304 having a high absorption rate of laser light in the infrared region
  • the laser beam 4 cannot be irradiated at an angle, there is an advantage that the application range is widened. In particular, from the viewpoint of quality, it is desirable that the irradiation angle of the laser beam 4 be 1 ° or less.
  • the resin 1 and the metal 2 are brought into close contact with each other by the effects of the pressure by the pressure member 10 and the thermal expansion of the metal 2, the influence of the gap can be further reduced, and the bubbles of the resin 1 Can be suppressed. Furthermore, since it can join in the state which does not reach the thermal decomposition temperature of the resin 1, the improvement of interface strength and the strength reduction of the resin 1 itself can also be suppressed, and the strength of the joined body can be improved. There is also an advantage that the required laser power can be reduced. In addition, when the thickness of the pressurizing material 10 is small, warping may occur depending on the heat at the time of laser irradiation.
  • the thickness of the pressure material 10 is equal to or greater than the thickness of the metal material 2 to be joined.
  • the pressure member 10 is preferably 1.0 mm or more, and the pressure applied to the joint is preferably 0.4 MPa or more.
  • the pressurizing material 10 be made larger than the metal 2 to which not only the thickness but also the rigidity, heat resistance, and melting point are bonded.
  • the pressurizing material 10 does not need to be a flat plate, and when there is a step in the metal material 2 to be joined, it can be dealt with by using the pressurizing material 10 having a shape as shown in FIG.
  • an adhesive may be added between the metal 2 to be bonded to the resin 1 and laser bonding may be performed.
  • an adhesive it is possible to conduct heat in the adhesive portion, so that the influence of the gap can be reduced.
  • the adhesive inserted between them has a thermal conductivity of 0.25 W / mK or less.
  • FIG. 3 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • This embodiment is characterized in that fine irregularities 11 are formed on the laser irradiation surface of the pressure member 10 to improve the laser absorption rate.
  • the surface of the laser irradiation surface has a larger surface roughness than the opposite surface of the pressure member 10 (the surface facing the metal 2 side) and the surface of the metal 2 on the pressure member side. This technique can reduce the required laser power and enables highly efficient laser bonding.
  • the fine irregularities 11 are more preferably subjected to sandblasting, laser processing, or the like.
  • the fine irregularities 11 are preferably about Rz 4 to 10 ⁇ m in terms of roughness.
  • an electrolytic process for forming nanoporous holes may be performed.
  • the process for forming the fine irregularities 11 is an effective means for the metal 2 at the interface of the joint.
  • the roughness for improving the bondability depends on the viscosity of the resin 1 at a high temperature, but in general, the roughness of the metal 2 on the bonding surface is greater than the roughness of the surface of the pressure member 10. good.
  • FIG. 4 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • the present embodiment is characterized in that the light absorption rate is increased, for example, the blackened coating 12 is applied by subjecting the pressure member 10 to electrolytic treatment or the like in advance and appropriately controlling the metal oxide film.
  • the pressurizing material 10 may be coated 12 with a ceramic film.
  • the coating 12 by the ceramic film is mainly composed of ceramic powder such as silica, alumina, zirconia, and silicon carbide, an inorganic binder, and water of a solvent. Further, TiO 2 or the like may be electrodeposited as the coating 12.
  • the coating 12 of the pressurizing material 10 may be provided on a surface to be in close contact with the metal 2, and heat conduction can be efficiently caused to the metal 2 by heat radiation.
  • Such a coating 12 is determined depending on the material of the pressure member 10, but greatly affects the material and thickness of the metal 2 and the resin 1 to be joined. What has a larger light absorption rate than the material inside the pressurizing material 10 is good. Further, depending on the material system to be joined, it is also effective to apply a light-absorbing pigment or paint to the laser irradiation surface of the pressure member 10.
  • the coating 12 for increasing the light absorption rate may be used in combination with the addition of fine irregularities 11 on the laser irradiation surface of the pressure member 10, or the coating 12 itself. Fine irregularities may be formed on the surface.
  • FIG. 5 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • a second pressure member 20 that is not irradiated with laser light is used.
  • the pressurizing material 10 having a high light absorption rate is used for laser absorption, In some cases, it is better to increase the pressure by giving the pressure member 20 rigidity. Therefore, it is better to set the rigidity of the second pressure member 20> the rigidity of the pressure member 10 and the light absorption rate of the pressure member 10> the light absorption rate of the second pressure member 20.
  • the second pressure member 20 may be bonded to the pressure member 10 in the case of a resin having low heat resistance, but a metal or glass having high heat resistance that is not bonded to the pressure member 10 is used. It is desirable.
  • FIG. 6 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • the present embodiment is characterized in that the shape of the contact surface with the metal 2 to which the pressurizing material 10 is bonded is a convex structure 13. With this structure, it is possible to suppress thermal diffusion of the pressure member 10. For this reason, it is a particularly effective means when it is desired to perform fine bonding. In addition, since it is possible to increase the pressure locally, the structure is effective when the length of the joint portion is large due to the structure of the product.
  • FIG. 7 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • the present invention is characterized in that the thermal conductivity of the pressure member 10 is larger than the thermal conductivity of the metal 2 to be joined.
  • the thermal conductivity of the pressure member 10 is increased by 10 times or more compared to the metal 2, heat diffusion occurs in a larger area than in the laser irradiation diameter, and bonding in a large area becomes possible.
  • heat is diffused in the surface direction (left and right direction in the drawing) in the pressurizing material 10 having a high thermal conductivity, but in the metal 2, heat is not diffused so much in the surface direction.
  • the power density is important.
  • the laser power density is proportional to the laser power and half proportional to the square of the spot radius. For this reason, if the spot radius is small, bonding can be performed with low laser power. In addition, when scanning with a laser, bonding speed is often not uniform when the speed is increased. However, by using this configuration, since the resin is melted or softened more uniformly by heat conduction, high-speed and uniform laser bonding is possible. In that case, a pulse is also an effective means for laser oscillation.
  • FIG. 8 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • (A) is sectional drawing
  • (b) is a figure from a laser irradiation surface.
  • a projection 6 is provided on the joining surface side of the metal material 2 to be joined with the resin 1 to obtain a state. It is characterized by joining.
  • the protrusion 6 enters the molten resin 1 and the metal 2 is embedded in the resin.
  • the resin 1 and the metal 2 can be bonded together including the periphery of the protrusion 6, and the bonding area is increased by the uneven shape of the protrusion 6. Therefore, at the same time, the joint strength can be greatly improved.
  • FIG. 9 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • the laser beam 4 is irradiated to the pressure member 10, so that the resin 1 and the metal are caused by heat conduction in a direction different from the laser irradiation direction. 2 is joined.
  • the pressing direction is limited due to the structure of the product, the resin 1 and the metal 2 can be efficiently bonded by a laser by adopting this structure.
  • the thermal conductivity of the metal 2 to be joined is 100 W / mK or more.
  • the second pressure member 20 and the third pressure member 25 shown in the third embodiment may be the same.
  • FIG. 10 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • a surface modification treatment is performed on the bonding interface side of the resin 1 to form an oxide layer 7 in which oxygen functional groups are increased or generated, and then bonded. It is characterized by that.
  • any of dry treatments such as UV ozone treatment, plasma treatment, corona treatment, and short pulse (pulse width is picosecond or less) laser treatment is used in consideration of environmental effects and influence on other parts. And good.
  • Such surface treatment on the resin is particularly effective for a resin that does not contain an oxygen functional group in the main chain.
  • the introduction of oxygen functional groups is accompanied by a decrease in the molecular weight of the surface, when the gap between the resin and the metal is large or when joining a resin that does not contain an oxygen functional group in the main chain, compared to the case without treatment, There was a problem that it was easy to thermally decompose and a large amount of fine bubbles were generated.
  • This method is a method in which the merit of introducing or increasing the oxygen functional group by the surface modification treatment to the resin 1 can be further utilized. Therefore, not only two layers of resin 1 and metal 2 but also high quality can be realized in the joining of a laminated structure of three or more layers such as metal-resin-resin and metal-resin-metal.
  • the oxide film 7 containing resin oxygen is preferably at least about 5 nm.
  • FIG. 11 is a plan view showing another embodiment of the resin and metal laser bonding method of the present invention.
  • the laser irradiation length is made longer than the length in which the resin 1 and the metal 2 are in close contact with each other.
  • the bonding property is not stable.
  • the heat conduction of the pressurizing material 10 is used, and according to the heat conduction effect of the pressurizing material by making the laser irradiation length larger than the length in which the resin 1 and the metal 2 are in close contact with each other, The start point and the end point can also be joined uniformly.
  • FIG. 12 is a schematic view showing an example when applied to the sensor 30 on which the electronic component 31 having the housing of the resin 1 and the metal 2 is mounted using the resin-metal laser joining method of the present invention.
  • the resin 1 and the metal 2 that are the casings are joined and sealed using the pressure member 10 by any method of the embodiment.
  • the applicable target part is effective not only for the housing part of the product on which the electronic component 31 is mounted, but also for all products that can be joined by laser, such as a biochip, an electronic control unit (ECU), a connector, and a power module. .
  • this invention is not limited to the above-mentioned Example, Various modifications are included.
  • the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described.
  • a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. It is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

La présente invention a trait à un procédé extrêmement fiable qui permet de souder au laser une résine à un métal, l'absorption de la lumière par le métal n'ayant aucune incidence sur le soudage et la résine ne risquant pas de se décomposer thermiquement. Un matériau de pression composé d'un métal ou d'une céramique est utilisé, et une résine ainsi qu'un métal sont pressés l'un contre l'autre au moyen du matériau de pression depuis le côté du métal. Au même moment, le matériau de pression est exposé à une lumière laser et la chaleur générée par cette lumière laser est conduite depuis le matériau de pression jusqu'à la résine par le biais dudit métal afin de souder la résine au métal. Par conséquent, une résine et un métal peuvent être soudés au laser d'une manière extrêmement fiable pendant un temps takt de courte durée, une résistance élevée est obtenue et l'inclusion de bulles est évitée.
PCT/JP2013/060421 2012-04-11 2013-04-05 Procédé pour le soudage au laser WO2013154037A1 (fr)

Applications Claiming Priority (2)

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JP2012089809A JP5838116B2 (ja) 2012-04-11 2012-04-11 レーザ接合方法
JP2012-089809 2012-04-11

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JP2016117194A (ja) * 2014-12-19 2016-06-30 三菱エンジニアリングプラスチックス株式会社 樹脂金属複合体及びその製造方法
EP3386284A4 (fr) * 2015-11-30 2019-07-10 Hitachi Automotive Systems, Ltd. Dispositif de commande électronique et procédé de fabrication de dispositif de commande électronique
US20200386707A1 (en) * 2017-12-11 2020-12-10 Samco Inc. Method for bonding cycloolefin polymer to metal, method for producing biosensor, and biosensor
CN112404728A (zh) * 2019-08-23 2021-02-26 深圳市裕展精密科技有限公司 连接件、装置、激光设备及制备方法
CN113787255A (zh) * 2021-09-30 2021-12-14 苏州大学 一种透明塑料薄膜的激光焊接方法

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