J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (01): 167-168.

• Research Articles • Previous Articles     Next Articles

Mathematical modeling of metal active gas (MAG) arc welding

Takayoshi Ohji, Yoko Tsuji, Fumikazu Miyasakn, Takeshi Yamamoto   

  1. Department of Adaptive Machine Systems, Osaka University 2-l, Yamada-oka, Suita, Osaka, 565-0871, Japan
  • Received:2000-04-25 Revised:1900-01-01 Online:2001-01-28 Published:2009-10-10
  • Contact: Takayoshi Ohji

Abstract: In the present paper, a numerical model for MAG (metal active gas) are welding of thin plate has been developed. In MAG are welding, the electrode wire is melted and supplied into the molten pool intermittently. Accordingly, it is assumed on the modeling that the thermal energy enters the base-plates through two following mechanisms, i.e., direct heating from are plasma and "indirect" heating from the deposited metal. In the second part of the paper, MAG are welding process is numerically analyzed by using the model, and the calculated weld bead dimension and surface profile have been compared with the experimental MAG welds on steel plate. As the result, it is made clear that the model is capable of predicting the bead profile of thin-plate MAG are welding, including weld bead with undercutting.

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