TCC - Engenharia de Materiais (UACSA)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/2914
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Resultados da Pesquisa
Item Análise da resistência a corrosão do aço API 5L X70 revestido com inconel 625 por soldagem plasma pó e por arco submerso(2021-12-09) Ferreira, Beatriz Cândida de Farias; Santos, Aureliano Xavier dos; http://lattes.cnpq.br/0810494477757052; http://lattes.cnpq.br/8533374114394812Annually, the oil industry invests large amounts in pipeline maintenance, mainly in anti- corrosion measures. Thus, solutions are sought that combine low cost, reproducibility and consistent properties. One of them is the use of materials that have high mechanical and anti- corrosive properties in the form of coatings that can be deposited by welding. This study aimed to evaluate the effects of different welding parameters on the corrosion resistance of inconel 625 alloy coatings deposited by API 5L X70 steel by the PTA welding process , evaluate samples with higher and lower dilution and use the parameters of these experiments to perform SAW submerged arc welding coating in order to compare the processes. The parameters were optimized through factorial experimental design and the results analyzed by the Response Surface Methodology (MSR). The samples were mainly evaluated by dilution (D), iron content (Fe) and resistance to corrosion by linear potentiodynamic polarization (PPL).Item Influência da corrente e taxa de alimentação na resistência à corrosão de revestimento à base da liga INCONEL 625 depositada por PTA-P(2019-12-10) Soares, Breno Luiz Santos; Santos, Aureliano Xavier dos; http://lattes.cnpq.br/0810494477757052Nowadays, the oil exploration process is still greatly affected by pipeline failures, which delay the production schedule, creates high maintenance costs, and creates risks to the environment and health. Thus, the search for less costly alternatives to minimize these impacts is constant, especially against failures due to corrosion. One of these is the use of materials that have high mechanical and anticorrosive properties in the form of coatings, which could be deposited by welding. The objective of this study was to evaluate the effects of the welding current and feed rate on the corrosion resistance of coatings based on the Inconel 625 alloy, deposited by PTAP process in API 5L X70 steel. The parameters were optimized using the factorial experimental design and the results analyzed by the Response Surface Methodology (RSM). Three deposits with ½ overlap were performed by PTA-P welding process, followed by an analysis of the dilution, iron content and corrosion resistance by electrochemical measurements. The coatings obtained with lower welding current and feed rate values showed better anti-corrosion properties.