ESTIMATION AND EXPERIMENTAL VERIFICATION OF WELDING TEMPERATURE BY GAS METAL ARC WELDING PROCESS
In this paper, the thermal model of butt joint in Gas Metal Arc Welding (GMAW) is constructed and simulated based on ANSYS software to obtain welding temperature field. Low carbon steel with temperature-dependent thermal properties due to very high welding temperature is considered. Volumetric heat source is determined through series equations for different welding conditions. Experiments are performed to measure and verify welding temperatures under different welding parameters. Results show that the simulation temperatures are in good agreement with the measurement temperatures for all cases. In addition, deformation and residual stress is also acquired through simulated results. This method strongly provides reliable information for finding an appropriate welding condition that will improve quality of welding products.
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