EMC - Trabalhos de Conclusão de Curso
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Item Estudo do uso da escória ferro-níquel no processo de soldagem utilizando o processo MIG/MAG adaptado para arco submerso(Universidade Federal de Goiás, 2023-08-16) Machado, Yago de Moraes; Figueiredo, Kléber Mendes de; Figueiredo, Kléber Mendes de; Alves, Renata Rodrigues; Alves, Fleide Wilian Rodrigues; Ferreira Filho, DemostenesThis study aimed to investigate the feasibility of utilizing ferro-nickel slag as a flux for submerged arc welding by incorporating carbon into its composition to enhance the hardness of the weld bead. The experimental process was conducted in collaboration with Anglo American, a mining company, which provided the slag for research purposes. The initial phase involved the adaptation of the MIG/MAG welding machine for submerged arc welding. This adaptation included the development of a 3D-printed support for the welding torch and a flux feeder. Subsequently, the welding parameters were systematically tested and adjusted, resulting in the production of a uniform weld bead. Subsequently, hardness and metallography tests were performed on various samples of weld beads on steel plates. A sample was used with pure CO 2 in the MIG/MAG process to serve as a reference for comparison with the submerged arc welding process results. In the submerged arc samples, experiments were conducted both with and without the removal of the mill scale. Additionally, an experiment was conducted with 1% carbon in the flux composition to explore the potential of increasing the coating hardness during the welding process. The metallography results exhibited promising outcomes with minimal fluctuations in hardness values.