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Effect of Welding Parameters on Penetration and Bead Width for Variable Plate Thickness in Submerged Arc Welding

Authors: R. K. Saxena, Harish K. Arya, Kulwant Singh


The heat flow in weldment changes its nature from 2D to 3D with the increase in plate thickness. For welding of thicker plates the heat loss in thickness direction increases the cooling rate of plate. Since the cooling rate changes, the various bead parameters like bead penetration, bead height and bead width also got affected by it. The present study incorporates the effect of variable plate thickness on penetration and bead width. The penetration reduces with increase in plate thickness due to heat loss in thickness direction for same heat input, while bead width increases for thicker plate due to faster cooling.

Keywords: Submerged Arc Welding, cooling rate, bead geometry, plate thickness

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