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http://dx.doi.org/10.5781/KWJS.2009.27.4.067

Influence of the Groove Angle on Arc Characteristics in Pulsed GMA Weaving Welding  

Choi, Kwang-Deok (Advanced Welding & Joining Technology Research Team, Korea Institute of Industrial Technology)
Cho, Won-Ik (Dept. of Mechanical Engineering, KAIST)
Kim, Cheol-Hee (Advanced Welding & Joining Technology Research Team, Korea Institute of Industrial Technology)
Na, Suck-Joo (Dept. of Mechanical Engineering, KAIST)
Publication Information
Journal of Welding and Joining / v.27, no.4, 2009 , pp. 67-72 More about this Journal
Abstract
In this paper, arc characteristics of V groove joints using pulsed GMA welding were found out. The bevel angles of $22.5^{\circ}$ and $30.0^{\circ}$ were chose to make the V groove configuration with the groove angles of $45^{\circ}$ and $60.0^{\circ}$, respectively. In the experiment, the arc current waveform measurement and the high speed photography were taken to investigate the arc characteristics for a single-beveled asymmetric workpiece. Consequently, the welding current was changed abnormally around the edge of groove. As the arc moved close to the groove face, the welding current was increased rapidly because the welding arc was affected by the inclined surface. Also the welding current waveforms were measured for the double-sided symmetric workpiece to verify the previous measurements for the single-beveled workpiece, and similar current waveforms were found.
Keywords
Arc characteristics; V groove joints; Pulsed GMA welding; Bevel angle; Groove angle; Weaving;
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  • Reference
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