Examinando por Autor "Peréz Ruiz, Eduardo Alberto"
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- PublicaciónSólo datosEffect of the Carbon Content on the Abrasive Wear Behavior in Ductile Cast Irons(International Journal of Engineering Research and Technology, 2019-08-31) Negrín Hernández, Luis Iván; Peréz Ruiz, Eduardo Alberto; Araque De Los Ríos, Oscar Javier; Cárdenas Olivier, Nelson; Figueirêdo Neto, AcácioThe In the present work, a comparative study is carried out to determine the resistance to abrasion of three types of cast irons. These materials are produced in the company Plant Mechanics of Santa Clara, taking for this study those of greater production, which are known as Fe 15, Fe 20 and Fe 30. A characterization of them is carried out, which includes chemical analysis, hardness measurement and structural analysis. To carry out the test, the method established in the ASTM G 65 standard known as the dry sand-rubber wheel is used. Method B of this standard is used, which has as working parameters the application of a force of 130 N, 2000 revolutions of the rubber wheel and a linear distance of 1436 meters. Finally, it is concluded that the highest resistance to abrasive wear coincides with the highest percentage of carbon and with the highest hardness of Fe 30
- PublicaciónSólo datosHusk rice used in the pack carburizing process of the AISI 1020 steel(International Journal of Engineering and Technology(UAE), 2019-08-04) Llano Martinez, Jorge Fredy; Peréz Ruiz, Eduardo Alberto; Cárdenas Delgado, AlejandraCarburizing is a heat treatment used to increase the carbon concentration on the surface of specimen of steel, in order to obtain a high hardness and a toughness core. One of the methods used to achieve these characteristics is the pack carburizing using charcoal or mineral coal. In this work, the heat treatment of pack carburizing on the SAE 1020 mild steel (disks 75 mm in diameter and 10 mm thick) is carried out using rice husk as a carbon source. The heat treatment was carried out at a temperature of 950° C with a soaking time of 7 hours. In addition, the results of the experimentation were compared with the results obtained with the traditional charcoal. In general, it was observed in the microstructural analysis and in the surface hardness that the charcoal, unlike the rice husk, provides better characteristics in terms of a greater penetration of the carbon in the piece and in the achievement of greater hardness.