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In this article, the issue of the Goldak heat source model modification was analysed for the Metal-Cored Arc Welding (MCAW) process utilizing gas mixtures based on different argon, carbon dioxide and oxygen ratios. In order to define the specific dimensions of the Goldak heat source model, bead on plate welding was performed at three heat level inputs. Consequently, a 3D scanning of samples was performed as well as a macrograph analysis for each experiment condition. The acquired results show that both the heat input and shielding gas compositions influence the weld geometry and shape of fusion.
goldak heat source; metal-cored arc welding; ar-CO2-O2 mixtures; weld geometry
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