Ingeniería Civil y Mecánica
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Item Análisis de la aleación mecánica de aluminio 1060 con porcentajes controlados en peso de zinc y su incidencia en la resistencia última a la tensión, dureza e impacto(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Mecánica Mención Diseño, 2019) Pineda Silva, Giovanny Vinicio; López Villacís, Gonzalo EduardoThe research project begins due to the need to have technically documented information related to powder metallurgy within the scope of mechanical alloy, manufacturing process that is entering into the National Industry, due to the advantages it presents with respect to traditional processes; being the most representative, a more exact control of the limits of the composition, optimization of raw material and is a process susceptible to automation with good surface finish for serial production of mechanical components. The experimental process of the mechanical alloy begins with the obtaining of mechanical powder of the base elements: Aluminum 1060 with particle size 30 micrometers and alloying: Zinc with particle size between 45−63 micrometers through the use of ball mill and a screening control; mixing process based on the percentages in weight defined for the subsequent compaction and sintering of the test pieces for the correct development of the tests. The study of tensile strength, hardness and impact was developed though the control of variables of percentage by weight of alloying element: 0.5 – 1.0 y 1.5 percentage Zinc, and sintering temperature: 462 celcius degrees y 594 celsius degrees ; the best results were obtained in the case of a study developed with 1 percentage Zinc and a temperature of 594 celsius degrees, where the hardness and tensile strength were increased by 69 percentage and 12.29 percentage respectively in relation to the base element; while the impact resistance as a function of the energy absorbed decreases by 39.40 percentage in the best case 1 percentage Zinc and 462 celsius degrees; in addition, the controlled variables are correlated with each other and directly affect the properties under study according to the statistical analysis developed by Fisher’s test.Item Dureza, resistencia a la tracción y desgaste en el material sinterizado aluminio 1060 con BABBIT ASTM B 23 ALLOY 2 combinado por aleación mecánica(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Gavilanes Jiménez, Daniel Alfonso; López Villacís, Gonzalo EduardoElectrical cables were collected from the sector of Ambato to obtain the material Aluminum 1060, which was proceeded to grind in the ball mill, as well as Babbit ASTM B 23 Alloy 2 to obtain the powder with a particle size of 45μm - 63μm, which took a duration of 10 hours, taking into account that the area where the crushing was performed is free of impurities and contaminants, to achieve the purity of each case of Aluminum 1060 with Babbit ASTM b23 alloy 2 studied, which have a volumetric fraction (Case 90- 10 = 90% Aluminum 1060 with 10% Babbit ASTM B 23 Alloy 2, Case 80-20 = 80% Aluminum 1060 with 20% Babbit ASTM B 23 Alloy 2, Case 70-30 = 70% Aluminum 1060 with 30% Babbit ASTM B 23 Alloy 2). The compaction of each case was carried out by the cold pressing method with a compaction pressure of 270 MPa, which reached a temperature of 660ºC in the sintering process. In each case, he was exposed to tensile, wear and hardness tests under the corresponding ASTM E 8, ASTM E 10, ASTM G105 standards. The tests show that of the three cases the material of Case 90-10 has the best mechanical properties but the mechanical alloy combination does not improve the wear resistance with respect to the Babbit ASTM B 23 Alloy 2.