Experimental Investigation of Welding Parameters on Automatic TIG Welding of Aluminium 5083 Plate

Abstract:

To improve the weld quality of AA 5083 plate using AA 5356 filler rod, an automatic TIG welding system is developed, by which welding speed can be controlled and a uniform speed is obtained. Welding of aluminium 5083 plate is carried out for different welding currents and welding speeds. In this work, the effect of welding speed and current on, the tensile strength of the weld, hardness at the three different zones viz. weld metal, HAZ and base metal are investigated. The temperature is measured at the HAZ and base metal. The hardness and temperature on the weld zone and the base metal are greatly influenced by the welding speed and current. It is found that the weld strength is influenced by different values of weld current and speed, but sometimes with high current, welding speed has no specific effect on the tensile strength of the weld. The effect of material deposition rate on the weld strength in uniform welding is studied. The weld thickness to width ratio is an important aspect in the analysis of weld strength. The values obtained for current and speed are taken for optimizing the strength and hardness, using Taguchi method and utility concept.

• Periodical: Materials Science Forum (Volume 879)
• Pages: 1459-1464
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.879.1459
• Online since: November 2016
• Authors: V.V. Praveen, T.D. John, K.M. Peethambaran*
• Keywords: AA 5083 Alloy Plate, AA-5356 Filler Rod, Automatic TIG Welding, HAZ, Material Deposition Rate, Rockwell HRB, Tensile Strength

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