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Journal of KWJS 2011;29(3):64-69.
Published online July 7, 2011.
GMA 용접공정을 이용한 오픈갭 수평고정관 초층 용접의 실험적 연구
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An Experimental Study on Root-pass Welding of Open Gap by GMA Welding Process in Pipeline
Ji-Sun Kim, Ill-Soo Kim, Chang-Eun Park, Hyun-Ho Na, Ji-Hye Lee, Seong-Myeong Jung
Abstract
  Since welding process for most pipelines with large diameter has been carried out by the manual process, automation of the welding process is necessary for the sake of consistent weld quality and improvement in productivity. Therefore the development of the optimized algorithm to decide the welding condition is an effective technique to prove the feasibility of interface standards and intelligent control technology to increase productivity and reduce the cost of system integration. In this study, the pipe welding experiment has been carried out using plused GMA welding process to select optimal welding condition. And necessary information in root-pass welding has been obtained by applying in the pipeline using the selected welding conditions through the welding experiment.
Key Words: Pipeline, GMA welding, Short circuiting transfer, Root-pass, 5G Welding position, Welding current waveform
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