Abstract-Submerged arc welding is most widely used welding process in a variety of industries such as aerospace, shipbuilding, automotive, energy generating systems, satellites and etc., due to its advantages such as high quality, smooth, uniform finished weld with no spatter. During the welding process, it will impact on may mechanical attributes such as heat affected zone, stresses, distortions, change in microstructure and deformations. This paper focuses on study the temperature distribution during the SAW welding with 2D heat flow mesh model. In the analysis, it was observed that the heat source acts from 0.001s to 1.000s and the shape of the weld is not formed by the time the heat source is terminated. It also point out that the node situated close to the boundary of the weld on the top surface of the plate reaches its maximum temperature value at ~10s. The temperature in the similar node on the bottom of the plate passes its maximum at ~15 and can distinguish gradual temperature equalization.
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