Estudo do uso da escória ferro-níquel no processo de soldagem utilizando o processo MIG/MAG adaptado para arco submerso
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Data
2023-08-16
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Universidade Federal de Goiás
Resumo
This 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.
Descrição
Palavras-chave
MIG/MAG, Arco submerso, Escória de ferro-níquel, Adaptation, Submerged Arc Welding, Ferro-nickel slag, Metallography, Grain boundaries, Vickers hardness
Citação
MACHADO, Yago de Moraes. Estudo do uso da escória ferro-níquel no processo de soldagem utilizando o processo MIG/MAG adaptado para arco submerso. 2023. 44 f. Trabalho de Conclusão de Curso (Bacharelado em Engenharia Mecânica) - Escola de Engenharia Elétrica, Mecânica e de Computação, Universidade Federal de Goiás, Goiânia, 2023.