Effect of different welding parameters on weld bead geometry and mechanical properties of synergic controlled mig/mag welding

In today's industry, synergistic controlled MIG/MAG welding machines are widely used. These machines using; automotive, construction, white goods, almost all sectors. In order to achieve efficiency in production and the desired quality standards, it is of great importance to increase the speed, penetration and quality of the welded seam especially during welded production.Increasing the speed, penetration and quality of the weld seam is of great importance, especially during welded production, in order to achieve production efficiency and desired quality standards. In order to achieve a high wire feed rate, metal transfer must be performed at high amps. This creates a limiting factor below certain thicknesses for some materials as it causes high heat input. Understanding the metal transfer methods and determining which parameters have optimum mechanical properties are important in synergistic controlled gas welding machines. The subject of this study is to compare the geometry and mechanical properties of the welded seams with the changes in the parameters of the synergistic controlled arc welding machines. In this study, macro structure and mechanical properties of welded joints obtained at different arc lengths and different voltages were characterized. In the macro investigations, it was observed that the width and height of the melt region increased with the increase of the arc length and that the width of the melt region increased and the combustion grooves formed by changing the welding voltage. It was found that the area under the influence of heat called HAZ (Heat Affected Zone) changed according to arc length and welding voltage. As the voltage increases, the increase in penetration also changes the weld seam geometry. As the arc length increases, it is observed that the spatter increases during the welding process. In the hardness studies, it was found that the hardness values near the weld seam line were higher than the hardness values of the base metal. The tensile test results showed that the mechanical properties did not change according to the selected voltage and arc length parameters. In the Charpy V-notch impact tests, it was found that the samples with an average of 26 Joule impact energy at room temperature were in the ductile fracture zone.