ANÁLISE DA INFLUÊNCIA DE DIFERENTE MISTURAS DE GASES DE PROTEÇÃO DA JUNTA SOLDADA UTILIZANDO O PROCESSO GMAW

This work addresses the Gas Metal Arc Welding (GMAW) process and investigates the influence of different shielding gas mixtures on the quality and morphology of the weld bead. The study is justified by the need to reduce industrial costs and optimize the use of gases such as Argon, Carbon Dioxide, and Oxygen, evaluating the impact of these mixtures on the mechanical and visual aspects of the weld bead. The research was conducted in partnership with CNH Industrial Brasil, using robotic welding to ensure precision and uniformity in the tests. Three gas compositions were analyzed, including the company’s standard mixture and other potentially more cost-effective formulations. The tests conducted were visual and involved macrography to assess the condition of the obtained weld and the compliance of the welds with industrial standards. The results indicated significant differences in bead geometry and the feasibility of replacing the gases used, highlighting the most efficient mixture in terms of cost-effectiveness and technical quality. The conclusions contribute to the optimization of welding processes on an industrial scale.