Engenharia Mecânica (UACSA)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2919
Siglas das Coleções:
APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
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Resultados da Pesquisa
Item Avaliação da resistência a corrosão de revestimentos à base de níquel depositados em aços API 5L X70 por soldagem plasma pó(2019-07-09) Nascimento Junior, Josimário do; Santos, Aureliano Xavier dos; http://lattes.cnpq.br/0810494477757052; http://lattes.cnpq.br/2089402782247306Corrosion failures are the leading ause of leakage in the oil industry. For this reason, the use of new materials with better resistance to this phenomenon has been very studied. One of the most used alternatives, due to the lower cost involved, is the application of coatings with these materials through welding processes. this work has the objective of evaluating the corrosion resistance of coatings based on nickel alloys in different welding parameters. As base metal using was API 5L X70 steel sheets and as addition metal, it binds to the Ni base of Nickel, Inconel 625 in a powder. as experimental tool was used experimental planning 2³ plus central point, associated to the surface response technique (MSR). The geometric characteristics, dilution, iron content and finally, electrochemical measurements of corrosion were made, were coated and subjected to heat treatment. the experimental results indicate that lower dilution values and iron content provide high corrosion resistance.Item Estudo dos efeitos dos parâmetros de soldagem MIG em revestimentos a base de níquel depositados em aço API 5L X70(2019-07-09) Santos, Gabriela Valdeci dos; Santos, Aureliano Xavier dos; http://lattes.cnpq.br/0810494477757052The application of nickel alloy coatings is commonly performed in the oil and gas industry to increase the life of equipment in aggressive environments, given that this procedure improves corrosion resistance without a significant increase in production cost when compared to mas-sive equipment manufactured with other alloys. The present work evaluates the best process conditions in the deposition of coatings to nickel alloy bases applied by the MIG welding pro-cess in API 5L X70 steels. As base metal plates of the API 5L X70 steel were used as the ad-dition metal, the Ni-based alloy Inconel 625 as the solid ring. As an optimization tool, a com-plete experimental design 2³ was used, associated with the technique of surface response me-thodology (MSR). Measurements of the geometric characteristics (width, reinforcement, convexity index, penetration and dilution) were made, besides raising the microhardness profile of the deposited coatings that used higher and lower welding e-nergy. The most satisfactory results were coatings having 5.8% dilution, 6.19 mm reinforce-ment and 22 mm wide. The microhardness values were influenced directly by the increase of the welding energy used.