Welding Current in Submerged Arc Welding
Authors
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Dept. of Mechanical Engineering, Indian Institute of Technology, Delhi ,IN
Sunil Pandey -
Dept. of Mechanical Engineering, SBCET, Phirozpur, Punjab ,INNarinder Mohan
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International Division, DST, New Delhi ,ING. Padmanabham
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Dept. of Mechanical Engineering, Raazi Engineering College, Kermaanshah ,IRMasood Aghakhani
Keywords:
Submerged Arc Welding, Welding Current, Melting Rates, Process Parameters, Modelling.Abstract
A relationship between welding current and various welding parameters has been proposed. The relationship can be used to predict welding current and melting rates in submerged arc welding process. Two-level half-fractional factorial design was used to investigate and quantify the direct and interaction effects of four process parameters on welding current in SAW of mild steel.
Wire feed rate, open circuit voltage, welding speed and plate thickness were taken as the welding parameters to investigate the main and interaction effects on the welding current. A model has been proposed for predicting the welding current in submerged arc welding. The adequacy of the model was tested by the use of analysis of variance technique and the significance of the coefficients was tested by the student’s ‘t’ test. The estimated and observed values of the weakling current have been compared through a scatter diagram. The main and interaction effects of different parameters involved have been presented in graphical form.
