Análise da influência do pré-aquecimento, gás de proteção e tecimento na diluição e dureza de revestimento de inconel 625 ao substrato de aço carbono por processo MIG/MAG
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Data
2018-12-10
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Universidade Federal de Goiás
Resumo
Welding coating is an increasingly used method for the manufacture of wear and
corrosion resistant parts, since it allows the manufacture of parts with lower cost
materials, applying more noble materials to the surface to achieve the desired properties.
The present work deals with the influence of the variation of three parameters on the
coating of a Nickel alloy (Inconel 625) by MIG / MAG welding on a carbon steel substrate,
varying the protection gas and the preheating temperature, with the purpose of
determining the most suitable parameter to perform the coating process in function of not
having high dilution of the weld bead in the substrate, concurring in significant losses in
the hardness of the coating material. Welding is also contemplated with the weaving
technique, in order to assess whether or not the use of weaving is advantageous for the
process. The main results were increased dilution for use of the fabric, increase of the
preheating temperature, and larger amounts of active gas in the protection gas. For
welding with Ar + 25% He also increased the dilution for higher preheating temperatures.
With increasing dilution, for higher temperatures and active gas there was reduction in
hardness. The weave had no clear behavior with respect to the hardness of the coating.
Descrição
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Soldagem, MIG, MAG, Inconel 625, Revestimento, Diluição, Welding, Coating, Dilution
Citação
SPEZIALI, Lucas Moura. Análise da influência do pré-aquecimento, gás de proteção e tecimento na diluição e dureza de revestimento de inconel 625 ao substrato de aço carbono por processo MIG/MAG. 63 f. Trabalho de Conclusão de Curso (Graduação) - Escola de Engenharia Elétrica, Mecânica e de
Computação, Universidade Federal de Goiás, Goiânia, 2018.