• 제목/요약/키워드: Gmaw

검색결과 264건 처리시간 0.028초

Development of Digital Gas Metal Arc Welding System and Welding Current Control Using Self-tuning Fuzzy PID

  • Doan, Phuc Thinh;Pratama, Pandu Sandi;Kim, Suk-Yoel;Kim, Hak-Kyeong;Yeun, Hwang-Yeong;Byun, Gi-Sig;Kim, Sang-Bong
    • 한국해양공학회지
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    • 제25권6호
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    • pp.1-8
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    • 2011

  • This paper describes a new method for a digital gas metal arc welding (GMAW) system. The GMAW system is an arc welding process that incorporates the GMAW power source (PS-GMAW) with a wire feed unit (WFU). The PS-GMAW requires an electric power of constant voltage. A constant magnitude is maintained for the arc current by controlling the wire-feed speed of the WFU. A mathematical model is derived, and a self-tuning fuzzy proportional-integral-derivative (PID) controller is designed and applied to control the welding current. The electrode wire feeding mechanism with this controller is driven by a DC motor, which can compensate for both the molten part of the electrode and undesirable fluctuations in the arc length during the welding process. By accurately maintaining the output welding current and welding voltage at constant values during the welding process, excellent welding results can be obtained. Simulation and experimental results are shown to prove the effectiveness of the proposed controller.

  • https://doi.org/10.5574/KSOE.2011.25.6.001 인용 PDF KSCI

GMAW오버레이의 Fe-Al 금속간화합물의 형성 (Formation of Fe-Al Intermetallic Compound in GMAW Overlay)

  • 김병수;박경채;조상흠
    • 대한용접접합학회:학술대회논문집
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    • 대한용접접합학회 2003년도 추계학술발표대회 개요집
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    • pp.240-241
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    • 2003

  • The iron aluminides have been among the most widely studied intermetallics because of their low cost, low density, good wear resistance, ease of fabrication and resistance to oxidation and corrosion. In this study, weld overlay was performed with JIS-YGW11 and A14043 wire on the base metal.

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