Diseño y construcción de una cámara para controlar atmósferas agresivas sobre materiales metálicos con tratamientos integrales para la corrosión

Abstract

The objective of this Curricular Integration Work was to design and build a chamber to control aggressive atmospheres on metallic materials with comprehensive treatments for corrosion. The development of this technical work included the design of the module, its modular structure, corrosion chamber body, external cover, heating system, electrical system, control system, and the construction of the control panel. For the construction of the module, the QFD methodology was used. This method collects the user's requirements before its design and the parameters required to function correctly, guaranteeing that the best alternative is chosen before its construction. For the module of aggressive atmospheres, each element was designed separately, the frame structure was built in AISI 304 stainless steel, the body of the corrosion chamber was made with tempered glass, the external cover was constructed with wood, and for its insulation thermal glass wool was used, for the construction of the control panel it was necessary to choose the appropriate elements for the electrical system which helped in monitoring the conditions to which the samples were subjected, these samples were prepared based on ASTM standards G1-03 and NACE/SSPC-SP2. In this context, it was concluded that the QFD methodology allowed us to identify the best design alternative before construction, which was orderly and systematized. The practice was carried out with the samples in which the pH, humidity, and temperature levels were considered. To simulate the aggressive atmospheres on the samples, the tests showed that the average temperature to start working is 34°C with a measurement of 3 Volts; therefore, the temperature influences the analysis to determine the degree of corrosion of a metal.