• Title/Summary/Keyword: Friction spot joining

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Importance of Fundamental Manufacturing Technology in the Automotive Industry and the State of the Art Welding and Joining Technology (자동차 산업에서 뿌리기술의 중요성 및 최신 용접/접합 기술)

  • Chang, InSung;Cho, YongJoon;Park, HyunSung;So, DeugYoung
    • Journal of Welding and Joining
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    • v.34 no.1
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    • pp.21-25
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    • 2016

  • The automotive vehicle is made through the following processes such as press shop, welding shop, paint shop, and general assembly. Among them, the most important process to determine the quality of the car body is the welding process. Generally, more than 400 pressed panels are welded to make BIW (Body In White) by using the RSW (Resistance Spot Welding) and GMAW (Gas Metal Arc Welding). Recently, as the needs of light-weight material due to the $CO_2$ emission issue and fuel efficiency, new joining technologies for aluminum, CFRP (Carbon Fiber Reinforced Plastic) and etc. are needed. Aluminum parts are assembled by the spot welding, clinching, and SPR (Self Piercing Rivet) and friction stir welding process. Structural adhesive boning is another main joining method for light-weight materials. For example, one piece aluminum shock absorber housing part is made by die casting process and is assembled with conventional steel part by SPR and adhesive bond. Another way to reduce the amount of the car body weight is to use AHSS (Advanced High Strength Steel) panel including hot stamping boron alloyed steel. As the new materials are introduced to car body joining, productivity and quality have become more critical. Productivity improvement technology and adaptive welding control are essential technology for the future manufacturing environment.

  • https://doi.org/10.5781/JWJ.2016.34.1.21 인용 PDF KSCI

Recent Research Trend in Laser-Soldering Process

  • Kim, Hwan Tae;Kil, Sang Cheol;Hwang, Woon Suk
    • Corrosion Science and Technology
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    • v.8 no.5
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    • pp.184-187
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    • 2009

  • The trend of the microjoining technology by the laser-soldering process has been reviewed. Among the production technologies, joining technology plays an important role in the fabrication of electronic components. This has led to an increasing attention towards the use of modern microjoining technology such as micro-resistance spot joining, micro-soldering, micro-friction stir joining and laser-soldering, etc. This review covers the recent technical trends of laser-soldering collected from the COMPENDEX DB analysis of published papers, research subject and research institutes.

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The Effect of Probe Tool Speed on Weld Characteristics and Strength during Friction Stir Spot Welding of Mg-alloy Sheets (마그네슘 합금 판재의 마찰 교반 점용접 시 툴 속도가 접합특성 및 강도에 미치는 영향)

  • Jung, Yoon-Chul;Park, Sung-Su;Shin, Hyung-Seop;Choi, Kwang
    • Proceedings of the KWS Conference
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    • 2010.05a
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    • pp.64-64
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    • 2010

  • 최근 그린 친환경, 지구온난화방지와 환경 부하물질저감, 기기 고효율화, 연비향상 등의 관점에서 항공기, 자동차 등 운송기계와 휴대용 전자제품 등 경량화가 요구되는 분야에서 경량합금의 사용이 급증하고 있다. 특히, 경량합금 중 가장 가벼운 마그네슘 합금은 최근 주목을 받고 있는 금속재료이다. 그러나 마그네슘합금은 알루미늄합금과는 달리 상온 성형성 및 접합성이 양호하지 않은 관계로 판재를 이용한 구조부품의 제작을 위해서는 많은 연구가 필요하다. 이러한 관점에서 본 연구는 마그네슘합금 판재의 마찰 교반 점용접을 시도하였다. CNC 밀링머신을 사용하여 프로브의 회전 및 삽입 속도에 변화를 주어 접합 특성을 평가하였고, 각 변수의 영향을 조사하였다. 적외선 열화상기와 로드셀을 사용하여 마찰 교반 점용접 중에 발생하는 교반부 온도와 접합부에 가해지는 수직부가하중의 거동을 측정하였다. 마찰 교반 점용접 후, 시험편의 접합 상태와 접합부 단면 관찰을 통해 접합 상태를 조사하였다. 그리고 인장전단 실험을 실시하여 마찰 교반 점용접된 시혐편의 접합강도를 평가하였고, 파단된 시험편의 파면을 관찰하였다.

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