Browsing by Author "Pérez Salinas, Cristian Fabián"

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Adaptación de un Buggy con motor de combustión interna a un sistema eléctrico
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Ortiz Medrano, Edison David; Pérez Salinas, Cristian Fabián
The following technical project is related about adaptation an electrical system to a tourist buggy, which had an internal combustion engine by origin, which electrical mechanical components were performed in the chassis of the Buggy. As a result, the use of new energies for transportation and technological innovations were reached. To reduce the pollution in the environment, noise, and the easy maintenance facility. It has been started from a chassis, and through the appropriate studies and analysis, was settle the components and their selection for the conversion of the Buggy which is driven by an electric engine. This one consists of a battery bank, a controller, and an electric engine of direct current (DC). Consequently, it was developed in two parts such as the mechanical and electrical. In the mechanical checking was based on the transmission system in the design and construction of the support for the electric engine as well as the gears and the chain previously calculated. In addition, the electrical part was based on the connections between the engine, batteries and controller which are linked by the correct operation. In conclusion, the Buggy operating system is developed by accelerating the pedal which is linked to a potentiometer which sends the signal to the controller and this one by a certain logic reaching that the engine turns more or less revolutions depending on the desire of the user. Additionally, the controller has other features such as reversing motor rotation and regeneration of energy; It means that it takes advantage of the rotation of the motor to charge the batteries when this one works like a generator, with sensors that warn when the speed is reduced (braking). The performance tests performed succeed obtaining a safe handling for the user achieving a maximum speed of 48 km / h on straight roads with an autonomy of 22 km.
Análisis de la contaminación de ruido ocupacional para mejorar el ambiente laboral en la empresa Tenería Díaz Cía. Ltda.
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2015) Orozco Manobanda, Israel Antonio; Pérez Salinas, Cristian Fabián
Análisis de la influencia de los rayos UV en la resistencia a la tracción del compuesto de matriz polimérica reforzada con fibra de guadua
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Guamani Saquinga, Marisol Belén; Pérez Salinas, Cristian Fabián
In the present experimental work was analyzed the influence of UV rays on the tensile stress of the polymer matrix composite material, through a mechanical test where it was determined that guadua fiber has good mechanical properties. It is similar the behavior of a fiber synthetic, so this fiber can replace it. The great abundance, it was facilitated to obtain and process the fibrous material. The composite material has as a matrix the polyester and epoxy resin while the reinforcement is considered guadua fiber, which It should be woven with an orientation of 0 degrees at the time of being used as reinforcement and stacking layers. As the way to improve the mechanical properties. Thense, the Guadua fiber reinforced polymer matrix composite material has a volumetric fraction of 70 percent as matrix and 30 percent as reinforcement by hand lay-up and cured to the environment for 720 hours at room temperature. The analysis of the tensile strength behavior of the composite material by ASTM D3039 regulations was performed when subjected to a UV test by ISO 4892 for 50 hours and 250 hours of exposure in an artificial aging chamber with xenon arc. Also, the tensile test was performed with 30 specimens classified by resin and epoxy matrix at 0, 50 and 250 hours of exposure. When the data is obtained, the statistical analysis is carried out using the Minitab software allows an statistic analysis of the data. Then it was determined that the maximum tensile stress of 84.63 MPa, modulus of elasticity of 1363.03 MPa and elongation of 6.21 percent with polyester resin matrix and a the maximun resistance of 71.79 MPa, modulus elasticity of 1518.47 MPa and elongation of 4.73 percent with epoxy resin matrix. And the use of the desirability function it was determined that the best combination when the material has a polyester matrix exposed to 250 hours of UV rays. It is demonstrating the better behavior with these characteristics. It is an economical resin to provide the rigidity and resistance to the composite material and where exposure to UV rays improves the mechanical property.
Análisis de la resistencia al desgaste abrasivo del acero al carbono ASTM A-36 y del AISI 1045, con tratamiento superficial, para utilizar en la reparación de cucharones de retroexcavadoras
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Capus Solano, Edisson Stalin; Pérez Salinas, Cristian Fabián
This experimental work aims to evaluate abrasive wear resistance according to ASTM G 65, to carry out this analysis were manufactured specimens of ASTM A-36 and AISI 1045 steels of 25.4x72x12.5 mm with cementation and nitriding. The cementing process consisted of placing the steels in a cast iron box in the oven at a temperature of 950 degrees Celsius for 8 hours, the tempering was performed at the temperature of 880 degrees Celsius quickly cooled in water and finally realized or the tempering at temperatures of 200 degrees Celsius. Nitriding consisted of incorporating nitrogen into the surface of steel composed mainly by ferritic phase, by heating in an ammonia atmosphere at a temperature of 500 degrees Celsius, for 15 hours to achieve a layer of depth nitriding. The hardness results obtained by ASTM A-36 steel with cementation is 484 HB and with nitriding is 151 HB, in AISI 1045 steel with cementation is 586 HB, and with nitriration is 178 HB, in the abrasive wear test a vol loss comparison was made umetrics between surface-treated steels and anti-abrasion steel as this material is used in the construction of backhoe buckets, obtaining results that wear is less on cemented steels, anti-abrasion steel, but is greater steels with nitriding treatment.
Análisis de parámetros de mecanizado en el proceso de electroerosión por penetración en microfundición de aluminio con electrodos de cobre y grafito y su relación con la rugosidad superficial resultante
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Santamaría Zambrano, Carlos Javier; Pérez Salinas, Cristian Fabián
Análisis del coeficiente de fricción e índice de inflamabilidad de un material compuesto a partir de matriz elastomérica de látex reforzado con gránulo de caucho reciclado
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020-08) Bautista Velasco, Edison Fabricio; Pérez Salinas, Cristian Fabián
The present experimental work aims to analyze the coefficient of friction (static and dynamic) and flammability index of a composite material made from elastomeric latex matrix reinforced with recycled rubber granule. Composite specimens with volumetric composition of 60 percent Synthetic latex and 40 percent Recycled rubber granule (particle size of 0.841 mm) were made, and simple material specimens with 100 percent synthetic latex configuration were also made. In addition, aluminum molds were manufactured with the purpose of facilitating the vulcanization process required by the samples. Friction tests (Use Guide for English XL Variable Incidence Tribometer) and flammability were performed under regulations (ISO 3795). Friction tests were carried out on the two materials on three types of surfaces under dry and wet conditions, the values were taken in the 4 directions (north, south, east, west). As a result, the factor with the highest incidence on the value of static and dynamic friction coefficients is the “Condition”. In the case of the “Material” factor, the coefficients of friction of greater value were for the material with a 100 percent synthetic latex composition. While in the "Surface" factor the wood type obtained higher values compared to the other two. On the other hand, it was determined that the “Orientation” factor has no impact on the measurement of friction coefficients. Finally, material flammability tests were performed, for the composite material the burn rate had a value of 9.23 mm / min. While, for the simple material the burn rate was 7.94 mm / min.
Análisis del manejo de desecho de viruta metálica en la industria metal – mecánica del cantón Cevallos para establecer mecanismos de prevención y control del suelo contaminado
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Maestría en Diseño Mecánico, 2018) Bonilla Parra, Santiago Rodrigo; Pérez Salinas, Cristian Fabián
The investigation is based on the study of the dross management of metal chip waste in the metal-mechanic industry of the Cevallos town, its collection and final disposal and thus demonstrate the environmental impact they generate to the soil. Therefore, part of the chemical composition of the raw material used in said industry to determine the elements that constitute pollutants to the soil according to the parameters of soil quality, established in the Unified Text of Higher Environmental Legislation (TULSMA) . It was determined that the final disposal of metal chip waste from the metal-mechanic industry of Cevallos town, are the scrap deposits located in Ambato city, specifically in the deposits: Max Metal, Eco Recycling, Tungurahua and Huachi Grande; sites in which it was proved that there is a residual of metal chips deposited in the soil. To know the percentage concentration of heavy metals present in these soils, the method of atomic absorption by flame was used and to determine the morphology the use of a scanning electron microscope was required. From the analyzes carried out, it was determined that the concentration of heavy metals in these soils ranges from: (99-299) ppm Cr, (58-3000) ppm Cu, (19-60) ppm Ni, (299-998) ppm Mn being superior both to those detected in adjacent soils and to the maximum allowable by TULSMA of 54ppm Cr, 25ppm Cu, 19ppm Ni. Finally, as a control and prevention proposal, a metal chip separation system based on magnetism was designed, which according to the analysis was the most suitable for this industry. The designed system is oriented to be used in the metal-mechanic industry of the Cevallos town, since it is at this point where it can have greater control of the contaminating element, mentioned mechanism has a loading capacity of 4Kg, 12 electromagnets that produce 5.07Kgf each one, having a total of 60Kgf.
Análisis del proceso de aplicación de pintura electroestática en polvo para componentes de transformadores y la evaluación de su adherencia y anclaje bajo ambientes controlados
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2022-09) Zamora Valencia, Klever Mauricio; Pérez Salinas, Cristian Fabián
Currently, electrostatic powder coatings are gaining more reliability and applicability in the national industry, in the metal-mechanical segment and electrical cabinets. Therefore, in order to determine each one of the controlled environments and their respective specimens, we proceed with this research to determine their resistance to each one of the tests. In the present experimental work, the controlled environments to be used were analyzed for the population of transformer components in which electrostatic powder paint was applied, elaborated under control conditions in which the type of paint, adhesion voltage, surface preparation and curing temperature were addressed. The properties of adhesion, impact, bending and saline chamber were determined according to the standards collected, within which the necessary conditions were stipulated to carry out the pertinent tests. Thus, there were two groups of data, quantifiable and categorically estimable, the first ones were statistically reviewed and the second ones according to what could be observed according to the criteria of the standard used.
Análisis del proceso de ranurado del material compuesto de matríz polimérica con resina epoxi y poliéster reforzado con cascarilla de arroz
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Cando Mullo, Luis David; Pérez Salinas, Cristian Fabián
Actually, the machining of composites has taken special importance in the industry dedicated to the production of structural components, however, due to the characteristics of these materials, a special sensitivity is observed to evaluate surface quality, so that as a contribution to the study of the machining of composite materials, an experimental research was developed focused on the analysis of the grooving process of the composite material made of polymer matrix reinforced with rice husk, which can be very useful in the bodywork industry and in the construction area as a replacement for wood and plaster. For the development of the grooving test, the response surface method based on the central composite design was used, from which 104 experiments were obtained to evaluate the surface quality, roughness and delamination factor (input and output) left by the machining process. From the analysis of variance (ANOVA) the adequacy of the experimental model was corroborated where it was determined that the optimum material to execute a grooving process is the compound of RE + CA applying a cutting speed of 70 (m / min), advance of 0.1 (mm / rev), working with a 103 S tool, obtaining minimum input and output delamination and acceptable roughness for said process. In addition, tests of UV degradation and traction were developed to observe the behavior of the compound, noting that the RP + CA composite exposed to an exposure time interval of 0, 50, 100, and 150 hours exhibits increased resistance to tension unlike the composite material of RE + CA that shows a considerable loss of mechanical property.
Análisis del proceso de ranurado del material compuesto de matriz polimérica con resina epoxi y poliester reforzado con fibra de abacá
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Flores Jácome, Walter Giovanni; Pérez Salinas, Cristian Fabián
The following research has as an objective to study the behavior that the material composed by the polymeric matrix with epoxy resin and polyester reinforced with abaca fiber has, at the moment to be subject of a grooving process, changing mechanization process parameters such as the cut speed and the advance speed, as well as the kind of tool to use. It is based on the surface response method to design the experiment, obtaining 52 combinations, each with its respective replica, giving a total of 104 grooves with cut-off speed values between 25.13 and 75.4 m/min, and an advance between 0.08 and 0.12 mm/rev, it is also applied the use of two different milling tools; the first tool 103-S (Super Acabado “Plexiglas”) and the second 107-M (Diamond serrate with front cut), the obtained results were entrance delamination factors, exiting factors and rugosity, allowing to know the superficial quality of the mixture. At the moment to develop a simultaneous optimization of the parameters used in the machining with a combination of a 85.81 m/min cut speed, advance of 0.12828 mm/rev, kind of tool 103-S, and a polyester resin matrix, entrance and exiting delamination factors are obtained similar to 1.0281 and 1.0707 respectively, and a rugosity of 2.3460μm; such values could be the best surface quality for this mixture. To complement the research, UV degradation essays were elaborated with 50, 100 and 150 exposure hours, concluding as the maximum effort traction capacity for the epoxi resin which is in the 100 hours and the polyester one to the 50 hours.
Análisis del proceso de ranurado y taladrado en el material compuesto de resina plástica reforzada con fibra de vidrio
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Silva Gavilanez, Erika Natali; Pérez Salinas, Cristian Fabián
In recent years the use of composite materials in industry has increased, due to its high strength and low weight, for this reason the study of machining processes in composite materials is very important to determine optimum cutting parameters, which allow to obtain a quality machining. In the present study the analysis of cutting parameters was carried out for two important processes such as grooving and drilling in two composite materials: polyester resin matrix reinforced with fiberglass and epoxy resin matrix reinforced with fiberglass, these materials were manufactured by the manual stratification method with a volumetric composition: 70% matrix and 30% reinforcement. For the grooving and drilling process, two exclusive cutting tools were used to machine composite materials, and the DOE experimental method was used, which allowed us to obtain the combinations of cutting parameters (cutting speed and feed rate), with the which were carried out the machining tests corresponding to each process, in the samples obtained measurements of surface roughness (Ra) and delamination that is defined by a delamination factor (Fd). The results obtained allowed us to define the cutting parameters for grooving and drilling, with which the best surface quality and the lowest delamination of the mechanized composite material were obtained.
Análisis del proceso de taladrado del material compuesto de matriz polimérica reforzada con fibra de abacá
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Pérez Amores, Evelyn Jackeline; Pérez Salinas, Cristian Fabián
The objective of this experimental work is to analyze whether the factors (cutting speed, feed rate, resin type and bit type) influence a composite material formed by a polymer matrix and abaca fiber reinforcement. For which a design matrix with input variables was considered: spindle speeds of 468.63, 800, 1600, 2400 and 2731.3 rpm, feed speeds of 82.72, 120, 210, 337.28 mm / min, type of resin (polymer or epoxy) and bit (CERIN 109Ø10, CERIN 118Ø10). While in the output variables the delamination factor (Fd) and the roughness (Ra) were considered. With the obtained data, the microscopy was performed to determine the delamination factor and by means of the rugosimeter the measurements of Ra were obtained, later with the design a response surface analysis was carried out. In such a way that when using Epoxy Resin and CERIN 118Ø10 bit, the best surface finish was generated, using the cutting parameters: spindle speed 468.63 rpm, cutting speed 14.72 m/min and feed speed of 337.28 mm / min. Resulting in an input delamination of 1.0642, output delamination of 1.0183 and roughness of 1.4337 μm. In addition, “Standard Test Method for Water Absorption of Plastics” based on Standard D 570-98, in order to verify which of the two compounds concentrates the greatest amount of water, obtained as a result of the epoxy matrix compound and abaca fiber. absorbs more water% (12.995%) unlike the polyester matrix compound and abaca fiber (11.345%).
Cálculo de la distribución espacial y temporal del consumo de energía en el sector residencial del Ecuador entre 2010 y 2050 a una resolución de 1 km2 por hora usando sistemas geográficos de información
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2022-01) Borja Cáceres, Rodrigo Alexander; Pérez Salinas, Cristian Fabián
This research based on geographic information systems GIS aims to be a database source that relates climatic conditions, population density with energy demand in order to be used to optimize energy consumption at the national level, in addition of estimating energy demand for end-uses for decades to come. Through the temporal estimation that was carried out for each hour of each month and spatially for each square kilometer, the calculations were carried out that allowed identifying the energy demand for heating and ventilation of homes, water heating and lighting and electrical appliances. A summation of each generated raster was made to determine a National demand, in addition to which it was possible to determine hourly demand profiles, especially for the two Ecuadorian metropolises. For energy projections, the combination of populations and estimated consumption under SSP2 parameters was used, while for climate projections the RCP 8.5 scenario was used. The resulting data set for the years 2010, 2015, 2020, 2030,2 040 and 2050 is designed for use in: a new integrated assessment model called MUSE and in any analysis of energy end-use technologies in the residential sector.
Caracterización de las partes termoformadas y su incidencia en las propiedades mecánicas para la fabricación de guardachoques con polipropileno de alto impacto en la Empresa Carrocera Construcciones Mecánicas Albán en la ciudad de Latacunga
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Ortíz Naranjo, José Fernando; Pérez Salinas, Cristian Fabián
The present experimental project was based on the analysis and determination of the mechanical properties of thermoformed pieces of high impact polypropylene, under the variation of the parameters in the thermoforming process; thickness, temperature and vacuum pressure, in order to establish the most suitable parameters of the thermoforming process that provide the best mechanical properties of the thermoformed parts for its application in the manufacture of bumpers. The tensile, bending and impact tests were developed under the standards ASTM D638, ASTM D790 and ASTM D1709 respectively. The specimens were manufactured by subjecting the polypropylene to the vacuum thermoforming process by varying the different parameters of thermoforming, obtaining 8 groups of specimens, and the sizing of the specimens was carried out as established in the standard. From the tests carried out it was possible to determine the mechanical properties, the data were tabulated, proceeding to the selection of the best and optimum combination of the parameters in the thermoforming process, the best combination being a thickness of 4mm, temperature of 200ºC and a pressure vacuum of 50 Psi, presenting good mechanical properties, an acceptable absorption of energy at impact, and in addition to a good distribution of stresses in the material.
Diseño e implementación del sistema de producción de chapas de compuerta por embutición en frío en planchas de acero de hasta 1,5 mm de espesor en la empresa Ingeniería del Acero y Matricería” de la ciudad de Ambato
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Santana Tenemaza, David Felipe; Pérez Salinas, Cristian Fabián
Diseño y construcción de un banco de pruebas para ensayos de inflamabilidad vertical de materiales utilizados en el interior de las carrocerías
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Cabrera Valencia, Alvaro Fabricio; Pérez Salinas, Cristian Fabián
The present technical work is based on the study of behavior of materials against fire, to calculate the index of vertical inflammation of the textile materials used inside the bodywork, this study has the need to know the index of inflammation. It is a requirement that bodywork companies must have to be qualified by the Ecuadorian INEN standard. For the fulfillment of this it started by an investigation to know which were the main textile materials that are used in the bodywork. Then, we proceeded to the use of ASTM D6413 Norm, materials and supplies necessary for the design and construction of the vertical chamber, with this design and following the guidelines of the standard of the Norm, the flammability test was done. Once the vertical inflammation test has been carried out, procedures to establish for the most appropriate textile materials for use inside bodywork, in order to guarantee the greatest possible safety in the event of the presence of fire inside it or in case of having a body fire.
Diseño y construcción de un molde de inyección de tensores aislantes en polipropileno para cercos eléctricos en la empresa Multiaccesorios MG
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2016) Balladares Acosta, Luis Narciso; Pérez Salinas, Cristian Fabián
Diseño y construcción de un sistema de ventilación y medición de gases producidos en la cámara de inflamabilidad del Laboratorio de Ingeniería Mecánica de la Universidad Técnica de Ambato
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Gualpa Caisachana, Alex Mauricio; Pérez Salinas, Cristian Fabián
Safety afety in the work environment as well as control of gaseous emissions towards the environment are trends in the modern industrial environment, since it seeks to implement processes that are friendly to the environment and minimize the impact on it, which is why This technical project constitutes the study of design and construction alternatives for a localized extraction system for the horizontal and vertical flammability chamber of the Faculty of Civil and Mechanical Engineering, as well as determining the degree of contamination in parts per million that is generated by test a material in said chamber. The necessary parameters were established for the design and construction of the localized ventilation system based on the ACGIH (AMERICAN CONFERENCE OF GOVERNMENTAL INDUSTRIAL HYGIENISTS) standard, such as height, density and temperature of gases, flow rates, etc. The necessary conditions were identified to carry out the combustion test and the emission of combustion products gases in stationary sources as established by NT 001 and EPA PART 60 appendix A. Then, materials in the flammability chamber were tested to verify the proper functioning of the extraction system and perform a combustion test based on EPA PART 60 APPENDIX A METHOD 3A, 6C, 7E, considering the characteristics of the Insigth Fyrite Plus Gas Analyzer. With the tests carried out it was found that the material composed of resin and natural fiber reinforcement has a concentration of 8 PPM of 𝐶𝑂2 (corresponding to 14.39 mg / m3) an average temperature of 23.22 grade C and 20.9 percent of 𝑂2,, with a gray-dark color, the material composed of polyester resin and fiberglass reinforcement has a concentration of 3 PPM of 𝐶𝑂2 (corresponding to 5.4mg / m3), an average temperature of 23.13 grade C and 20.9 percent of 𝑂2,, with a gray color, the microsuede material (corosil), has a concentration of 11 PPM of 𝐶𝑂2 (corresponding to 19.79 mg / m3), an average temperature of 18.03 grade C and 20.9 percent of 𝑂2,, With a gray-dark coloration, the alcantara material has a concentration of 3 PPM of 𝐶𝑂2, (corresponding to 5.4 mg / m3) an average temperature of 20.91 grade C and 20.9 percent of 𝑂2,, with a gray coloration.
Diseño y construcción de un troquel de corte y perforado de platina metálica de espesor 1/8 de pulg. para la empresa ingeniería del acero y matricería en la ciudad de Ambato provincia de Tungurahua
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Pérez Pallo, Edgar Daniel; Pérez Salinas, Cristian Fabián
The main objective of this project is to develop a methodology for the design and construction of dies that perform cutting and punching operations. It also allows the reader to understand how the optimization criterion works, creating a model using the Finite Elements method that facilitates the cutting process and perforated for a metal plate that has 1/8 inch of thick. For which a series of mechanical Traction and Bending tests were carried out, using the ASTM E8-16a and ASTM E290-14 standards respectively, to determine the properties of AISI SAE D3 steel commercially known as BOHLER K 100, steel selected for construction of the die To carry out the optimization of the punching process, series of simulations were carried out using a Finite Element software to determine the geometry of the punches that produces the least possible cutting effort when these operations are carried out. The results obtained through the simulations carried out by alternating the geometry of the punches allowed to determine values of the shear stress produced, from which the lowest value obtained was selected, which represents a reduction of 62% in relation to the effort obtained when the operation was simulated whit any specific geometry of the drilling punch.
Estudio de calidad superficial y desgaste de herramientas en el proceso de rectificado plano sobre hierro fundido
(Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Fiallos Zamora, Luis Fabián; Pérez Salinas, Cristian Fabián
The main objective of this experimental work is to study the surface quality of the cast iron and wear of the tools, silicon carbide stone and aluminum oxide in the grinding process of flat surfaces on the cast iron material with the different parameters that influence these processes. These two tools were used since they are those that exist in the national market and those that meet the requirements to perform this type of machining. The tool of silicon carbide has dimensions of 125x60x15 mm and with a hardness of 50 HRC, and the grinding wheel of aluminum oxide with dimensions of 110x60x20 mm and with a hardness of 60 HRC. The machine in which the experiments were carried out was the machine for rectifying flat surfaces of motors (headstocks) of Chinese origin, model 3M. 18 experiments were carried out with different cutting parameters with the tool of silicon carbide, of the same way we performed 18 remaining experiments with the aluminum oxide tool, taking a total of 36 experiments for both roughness and wear. The parameters that have significance in the surface roughness is the type of tool used, while for wear is the speed of advance of the work table. Finally, the surface roughness (Ra) obtained in the cast iron head was measured with a Mitutoyo SJ210 rugosimeter under the ISO 1997 standard, with which it was possible to determine that the roughness level is lower with the silicon carbide tool than with the aluminum oxide tool. The highest roughness value was 3,000 μm with the aluminum oxide abrasive wheel and the lowest value was 1,008 μm with the silicon carbide abrasive wheel. We also measured the wear (G) of the same tools obtained with the scale KERN model FKB301A with a sensitivity of 0.1 g, in the same way the highest value of wear was 69.19 with a feed rate of 13000 mm / min and the lowest value was 17,05 with a feed rate of 20,000 mm / min.