한국생산제조학회지 (Journal of the Korean Society of Manufacturing Technology Engineers)

  • 제25권5호
  • /
  • Pages.373-379
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  • 2016
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  • 2508-5093(pISSN)
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  • 2508-5107(eISSN)
한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
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커버 플레이트를 이용한 이종 3겹 저항 점 용접성 평가

Characteristics of Dissimillar Three-Sheet Resistance Spot Welding for Advanced High Strength Steel with Cover Plate

  • Shim, Junghyun (Department of Mechanical Engineering, Hanyang University) ;
  • Rhee, Sehun (Department of Mechanical Engineering, Hanyang University)
  • 투고 : 2016.07.11
  • 심사 : 2016.08.30
  • 발행 : 2016.10.15
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초록

Low carbon steel is usually used as the outer panel with low base metal resistance compared to the inner reinforced panel made with high strength steel, which makes it difficult to form a robust nugget. To overcome welding problems of a dissimilar three-sheet combination made of SGACEN, DP980 and CP1180, a cover plate was inserted between the upper electrode and SGACEN. The quality of the nugget was analyzed by comparing the welding signals and cross sectional images under maximum heat input both with and without the cover plate. To analyze the mechanical of weld properties, a hardness test analysis was conducted. To enhance the reliability of experimental results, temperature distributions were obtained using a simulation program. The method of inserting a cover plate led to a change in the heat input, which induced a larger nugget size between SGACEN and DP980.

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참고문헌

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