Ingeniería Mecánica
Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900
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Item Estudio de la aplicabilidad de tintas penetrantes no convencionales en la inspección de juntas soldadas para la detección de discontinuidades superficiales - AWS D1.1(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2023-08) Aguilar Sisa, Paúl Fernando; Paredes Salinas, Juan GilbertoThis project was carried out in order to determine the best combination of nonconventional penetrating inks, which have maximum applicability in the inspection of welded joints for the detection of surface discontinuities according to the AWS D1.1 code. In the methodological field, the equipment used for the experiment process is detailed, through an exploratory, descriptive and bibliographic level, allowing to define the processes based on the penetrating properties that the combinations have, based on their benefit, for which choose oils such as Sunflower and Johnson and dye such as blackberry, beetroot and achiote, in a limited time of 5 and 10 minutes, according to the specialized software. The experiment was given, through the use of unconventional inks elaborated, continuing with the evaluation in a data record, which is compared with the evaluation of conventional inks where the adequate registration was given, ending with the comparison between both results. Finally, the unconventional combinations were compared with the standardized inks, where the cracks, lack of fusion, craters, profiles, nominal sizes, undercuts and pores were visualized, where the combinations 4, 7 have the best results. , 8 and 11, which is obtained from the fusion between sunflower-annatto, as well as the Johnson-annatto mixture for 5 and 10 minutes respectively and the tabulations of the fully defined discontinuities were made, evaluating their applicability in each one of them they.Item Estudio de la calidad superficial de la película seca de pintura en las carretillas mediante el proceso de detección de discontinuidades (HOLIDAYS), en la empresa I.M.ESCO de la ciudad de Ambato(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Tirado Torres, Carlos Daniel; Guamanquispe Toasa, Jorge PatricioThe experimental work is about the study of the application process of monolayer powder electrostatic coating, in the smooth surface of the wheelbarrow components of the I.M.ESCO company and it was compared with the same process but in rough surface. The coating used is of hybrid epoxy-polyester type, in scarlet red color and the smooth surface preparation is carried out by means of a chemical wash with deoxidizer, while in order to obtain a rough surface, it was complemented with a cleaning by means of sand blasting using mineral grit, based on the code SSPCSP10. Witness plates were used for the control of the paint film surface quality; in the case of thickness measurement, five spots were established with three measuring points in each case, while for the adhesion control by cross-hatching two sets of lines were made, which are cut at right angles to obtain a plot of 36 squares; For the test by hydraulic thrust, dollies were placed on the control plate, which were detached by the pressure. Regarding the detection of the holidays, a micro-hole detector equipment was used that was used directly on the surface of the wheelbarrow components. It was determined that the most suitable electrostatic painting process to achieve a high level of surface quality of the dry film of paint in the wheelbarrow is achieved by preparing the surface with a chemical wash with phosphatizing deoxidizer and abrasive sand blasting with mineral shot, with a curing mechanism convertible by melting in a drying oven for 10 minutes.