• Title/Summary/Keyword: friction stir spot welding

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A Study on Welding Strength of Extru-Riveting Process of Aluminum Plates (알루미늄 판재의 압출점접합공정에 있어서 접합강도에 관한 연구)

  • Lee, J.H.;Kim, T.H.;Lee, M.Y.;Jin, I.T.
    • Transactions of Materials Processing
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    • v.19 no.8
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    • pp.460-467
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    • 2010
  • It was studied that two plates of aluminum can be welded by extru-riveting experiments with extru-rivet welding dies, and that the welding strength and metal flow on the welding section were analyzed by computer simulation according to the welding variable such as the diameter of extrusion insert dies. It was known by computer simulation that welding strength on the welding section of plates could be influenced by the diameter of extrusion insert dies. And it was known by experiments that two plates of aluminum can be welded on a spot point on aluminum plate by extru-rivet welding process, and that welding strength is higher and higher if the diameter of extrusion insert die is smaller and smaller, and that welding strength is the highest when diameter of extrusion insert dies is ${\emptyset}4.2$mm in the case that the diameter of rivet is 5 mm, when aluminum 5052 two plates with 1.5 mm thickness and one plate with 3mm thickness for rivet plate are used as welding material.

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.