Maestría en Mecánica Mención Diseño

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Subject: search.filters.subject.CORROSIÓN

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    Análisis de recubrimientos anticorrosivos aplicados a los aceros Q235B y su incidencia en la tasa de corrosión, en el sistema de agua potable de la ciudad de Riobamba provincia de Chimborazo
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2020) Amancha Torres, Hugo Fabián; Paredes Robalino, María Belén
    The investigation studied several anticorrosive coatings applied to Q235 steel, and the effects of the corrosion rate with the help of the salt spray chamber. The applied coatings are products known in the market and are AWWA C210 / 92 certified epoxy-food grade; because the pipe is used in the Drinking Water System of the City of Riobamba. The samples to be analyzed contain three different types of substrate cleaning prior to coating application and two types of coating application. For the present study, we will refer to the ASTM B117 standards, which details the necessary guidelines for accelerated corrosion tests in a salt spray chamber. According to ASTM D610, the degree of corrosion presented by the samples was indicated. And based on the ASTM G1 standard, the corrosion rate of each specimen was calculated. This analysis helped us compare and establish the best corrosion protection methods for Q235B carbon steel. Which are: UHS Duraplate - Bristle Blaster - Spraying and UHS Duraplate - Mechanical - Spraying with corrosion rate of 0.0205 mm / year.
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    Análisis de recubrimientos anticorrosivos aplicado al acero de alta resistencia y baja aleación (HSLA) ASTM a 1011 GR 50 y su incidencia en la tasa de corrosión para aplicaciones en la industria metalmecánica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2020) Guilcaso Molina, Cristian Orlando; Peña Jordán, Francisco Agustín
    This Project begins because the objective goes beyond studying the corrosion rate that occurs in ASTM HSLA 1011 Gr-50 steel compare it with ASTM A-500 and ASTM A-500 Galvanized steel. The specimens was tested in the salt spray chamber for along 480 hours. Once the surface cleaning parameters SSPC SP - 3 “mechanical and manual cleaning” and SSPC SP - 5 “abrasive blast cleaning” and coating application parameters have been met and accepted, Coating 1: Anti-corrosive Stop Mate Zinc Chromate and Coating 2: Layer 1: Hempadur Mastic 45881 and Layer 2: Hempathane Topcoat 55210, accelerate the corrosion process in the salt spray chamber at different exposure times and determine the loss of mass by initial and final. Tabulating results was obtained that the maximum corrosion rate corresponds to the composition of ASTM A-500 steel with an SSPC SP-3 cleaning system + Anticorrosive coating, reaching the value of 0.2119 mm / year, while that the minimum corrosion rate is given in a HSLA 1011 Gr - 50 steel, with an SSPC SP- 5 cleaning system + anticorrosive coating having an value of 0.0014 mm / year.