Investigations into TIG Arc Efficiency
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Authors
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Department of Mechanical & Industrial Engineering, University of Roorkee, Roorkee ,IN
S. R. Gupta -
Department of Mechanical & Industrial Engineering, University of Roorkee, Roorkee ,INP. C. Gupta
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Department of Mechanical & Industrial Engineering, University of Roorkee, Roorkee ,INS. N. Dubey
Abstract
Experimental investigations have been carried out to study the influence of various welding variables on arc efficiency in TIG (GTA) process using water cooled copper block as work piece. Heat collected by the water flowing through the hollow block, has been used to calculate the arc efficiencies. It has been shown that the welding current, arc length and electrode polarity have appreciable influence on the arc efficiencies over the entire range of investigations. Gas flow rate and torch angle also influence efficiency significantly but only under certain conditions.
