Maestría en Diseño Mecánico

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    Determinación de las causas que provocan las fallas en los soportes de rodamientos de arados para aumentar la vida útil de los rodamientos
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Diseño Mecánico, 2017) Carrasco Santillán, Julio Antonio; Espín Lagos, Segundo Manuel
    In the present assignment a study is accomplished to predict the useful life of the bearings presented in the plow supports known as rowlock too, for which the analyzes of the problems presented in the system under study have been performed. Laboratory and field tests have been developed. One of the main problems in the industry is the attrition of the mechanical elements by abrasion and friction, in our case the bearings proved to be the critical elements from this point of view. So they were made from a material cast with more count of Manganese, to try to increase the wear resistance caused by abrasion of the ground against their faces and avoid the creep of the low carbon steel that causes deformation in the bearing housings. To characterize the new material, hardness, tensile, metallographic and electron microscopy tests were performed according to ASTM standards. First, reverse engineering was done by designing the element to be subjected to finite element analysis and determining the loads acting on it. Subsequent the spectrometric tests of the original elements were carried out and their chemical composition was determined. Next merge the new elements merge and the obtain of the test pieces are carried out with the new chemical composition and the above-mentioned tests are elaborated to characterize the material. Assembling the elements in the different implements are proceeded to submit them to work and determine by the orometer of the tractor such as the new useful life of the element. The result of an average increase of 25% in the same working conditions, with a cost no greater than 5%. By supporting the productive matrix, the agro and the producer, avoiding expenses caused by the replacement of these elements and unnecessary stops of the equipment.