Seikei-Kakou
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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Volume 34, Issue 8
Displaying 1-9 of 9 articles from this issue
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Index
Foreword
Technical Notes : Special Issue on The Next Generation of Manufacturing by AM
Technical Report
Visiting Active Companies
Original Paper
  • Study on the Development of Direct Joining of Metal and Resin by Thermocompression
    Seiichi Sai
    2022 Volume 34 Issue 8 Pages 303-310
    Published: July 20, 2022
    Released on J-STAGE: August 20, 2022
    DOIhttps://doi.org/10.4325/seikeikakou.34.303
    JOURNAL FREE ACCESS
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    This paper describes a method to find the optimum conditions for direct joining between metal and resin by measuring pressure and temperature of the joining interface and the vicinity. In this process, the metal treatment for direct joining is carried out by laser irradiation, which forms fine irregularities and metal oxides on the metal surface. Direct joining takes place between the treated metal and the resin using an apparatus equipped with induction heating and thermocompression. Temperature control in this apparatus is performed by measuring near the joint of the metal with a radiation thermometer. The temperature at the interface is measured by a thermocouple sandwiched between the metal and the resin. The result between the temperature of the joining interface and the tensile shear strength indicated that the optimum temperature was below the melting point of the resin. Cross-sectional observation of the joined sample by SEM also indicated that the resin flows into the fine irregularities of the metal at a temperature below the melting point. This method is useful for optimizing the conditions for direct joining of metals and resins and elucidating the mechanism.

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