• Title/Summary/Keyword: Tailor Welded Blank : Upset Weldability : Press Fomability : Hardness Distribution : Erichsen cup test(stretch dome test)

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Evaluation of Weldability and Formability of Tailor Welded Blank by Using Upset Weld (업셋 용접 테일러드 블랭크의 용접성 및 성형성 평가)

  • 민경복;장진호;강성수
    • Transactions of Materials Processing
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    • v.8 no.1
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    • pp.57-64
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    • 1999
  • The press formability analysis of welding parts was studied in the current work by the tailor welded blank. As the body panel is used in the press forming of welding parts by a weld method of the tailor welded blank, the following conditions are demanded: 1) The strength of welding parts must be the higher than base metals. 2) After the welding, severe welding deformatins must be avoided. 3) The press formability of welding parts is similar to that of many base metals. 4) The productibility of a welding has to be higher. There are many welding methods satisfying these conditions, but the purpose of this study is to inbestigate the upset weldability and formability of the material (SPCC). SPCC steel sheet showed good weldability and formability under some welding conditions. The experimental results were discussed by the evaluation of the results obtained from tensile tests, hardness tests, micro-structures and Erichsen cup test was a little lower than that of parent material.

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