Sustitución de la arena en procesos de chorreado en seco para la limpieza de superficies metálicas
Palabras clave:
abrasivos, escorias, emisión de finos, preparación de superficieResumen
El presente artículo centra su objetivo en valorar la viabilidad técnica, económica y ambiental de materiales abrasivos que sustituyan la arena, convencionalmente utilizada en los procesos de preparación de superficies de las embarcaciones que ingresan a mantenimiento en los astilleros de la Corporación de Ciencia y Tecnología para el Desarrollo de la Industria Naval, Marítima y Fluvial –Cotecmar– en Cartagena de Indias, dado el impacto negativo que genera su uso en el medio ambiente y en la salud del personal que interviene en el proceso. Aplicando el método jerárquico AHP, la metodología de selección de materiales de la Corporación para la Investigación de la Corrosión –CIC– y el modelo de costos desarrollado,se seleccionó un grupo de abrasivos para evaluar su competitividad técnico-económica tanto en el laboratorio como en los astilleros de Cotecmar. El resultado final fue un proceso de chorreado en seco con escoria de cobre, y un proceso contingente que utiliza escoria de ferroníquel. El primer material se comercializa como abrasivo, el segundo no y ambos son técnica y económicamente competitivos y con un marginal impacto ambiental y en la salud del personal.Descargas
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