Weld Bead Geometry Prediction Model by Design of Experiments for Mild Steel

Uma Gautam and Vipi2
1.Department of Mechanical and Automation Engineering, GGSIPU, Delhi, India
2.Department of Mechanical Engineering, Delhi College of Engineering, Bawana Road, Delhi, India
Abstract—Submerged Arc Welding (SAW) is a common arc welding process and the basic characteristics of this process are high deposition rate, ability to weld thick sections with ease and longer weld runs because of the same reason it is used to join thick and heavy sections. The stress carrying capacity of a weld determined by weld bead geometry. The models were developed in terms of Arc Voltage, Arc Current, Travel Speed, nozzle to Plate distance obtained experimentally. The Experimental data has been used to develop the models with the aid of regression analysis. The effects of cutting variables (Arc Voltage, Arc Current, Travel Speed, nozzle to Plate distance) on Bead Height, Bead Width, Bead Penetration have been investigated by Central composite Design

Index Terms—Submerged Arc Welding (SAW), Central composite design, Arc current, Travel distance, Arc voltage, Weld bead geometry

Cite: Uma Gautam and Vipin, "Weld Bead Geometry Prediction Model by Design of Experiments for Mild Steel," International Journal of Mechanical Engineering and Robotics Research, Vol. 3, No. 3, pp. 517-527, July 2014.

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