DPI - Departamento Acadêmico de Processos Industriais
URI permanente desta comunidadehttps://ri.ifam.edu.br/handle/4321/505
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Resultados da Pesquisa
Item Análise comparativa das propriedades mecânicas de diferentes parafusos automotivos classe 10.9(2022-12-15) Nascimento, Thiago Pedrosa do; Fialho, Michaella Socorro Bruce; http://lattes.cnpq.br/9348859124436505; Castro, Cristovão Américo Ferreira de; http://lattes.cnpq.br/4930257608461492; Castro, Cristovão Américo Ferreira de; http://lattes.cnpq.br/4930257608461492; Barros, Rodson de Oliveira; http://lattes.cnpq.br/9424687587691792; Pinto, Camila da Costa; http://lattes.cnpq.br/5909706356694272Bolts are the most used fasteners in the metalworking industry. There are an infinite variety of suppliers and manufacturers due to large applicability. Thus, quality control is important to ensure its mechanical properties in accordance with standards. So, the aim of this study was to compare randomly obtained generic bolts and standard bolts against established quality assurance standards. With regard to the tensile mechanical properties, the results showed that a standardized screw has a maximum resistance stress of 1137.39 ± 18.2 MPa, a lower value than that of a generic screw of 1164.00 MPa ± 32.42. However, the elongation of standardized screws was approximately 14%, a value higher than that of generic screws, around 10%. The Rockwell hardness results (HRC) confirmed that both bolts undergo a tempering and tempering heat treatment, as well observed on the microstructure. And finally, the elemental analysis of the percentage of Carbon-Sulfur showed that both bolts had values within the specified range. In general, there was no discrepancy in the values obtained, inferring, therefore, that although the generic bolts are cheaper, it also has similar properties to standardized bolts.Item Utilização do nylon em ferramentas de dobra de tubos para CNC’S(2020-09-28) Silva, Kalil de Melo; Chagas, Sidney Assis; http://lattes.cnpq.br/1705258854443084; Chagas, Sidney Assis; http://lattes.cnpq.br/1705258854443084; Reis, Ailton Gonçalves; http://lattes.cnpq.br/7119484789256081; Arruda, Gutembergue da Silva; http://lattes.cnpq.br/8833717823163756The industrial sector has improved its manufacturing processes to provide quality products that meet customer requerements. The change in production demand, the need to lower costs and commitment of the companies to the physical integrity of its employees, has created an opportunity to Market with solutions that contribute to contínuos improvement of production processes. The presente work arose from the need for a company in the Industrial Pole of Manaus to seek a solution to meet the increase in production resulting from the emergence of new costomers. Before the situation presented, the objective of this study is the Development of a product capable of improving the efficiency of the machine in a way that is not only productive, but also safe. The development of the project was carried out through the application of the applied research methodology and product design. The use of nylon in folding tools for CNC’s, aims to reduce the internal rejection rate and, consequently, increase the quality of the folded handlebars, reducing rework and increasing productivity, since it will no longer be necessary to recover a high amount of handlebars for risk defects in the same. The result obtained with the identification of this material suitable for forming tubes was fully satisfactory, as it effectively perfomed its function, enabling the increase in productivity and product quality.Item Análise dos efeitos causados nas propriedades mecânicas de tração e dureza da liga de alumínio AA6351-T6 após soldagem TIG(2017-12-13) Silva, Saymon Castro Sombra da; Monteiro, Alberto de Castro; http://lattes.cnpq.br/8300386519703896; Monteiro, Alberto de Castro; http://lattes.cnpq.br/8300386519703896; Castro, Cristovão Américo Ferreira de; http://lattes.cnpq.br/4930257608461492; Arruda, Gutembergue da Silva; http://lattes.cnpq.br/8833717823163756This monograph investigated the effects of TIG welding on the mechanical properties of traction and hardness of AA6351-T6 wrought aluminum alloy. It was used the aluminum welding metallurgy studies of Kou (2003) and Mathers (2002). The general objective of this work is to raise the interferences of the TIG welding in an aluminum alloy of the series 6000 (Mg-Si), in respect of mechanical strength by mechanical tests of hardness and traction. The tensile test was performed on a butt joint of the aluminum alloy welded in the TIG process and also the hardness profile and macrografy in the heated affected zone and fusion zone. The results of the base metal were compared with those of the welded joint with the following conditions: Bar A as welded and Bar B welded and heated treated with T6. Finally, the analysis of the losses and gains in percentages. The results showed through the macrography that the welding was successful, and it was not possible to verify any typical weld defect. In the mechanical tests the welded sample had a reduction of about 50% in tensile strength and hardness of HAZ, keeping FZ without much loss of hardness in relation to BM. The samples that were treated with T6 artificial aging had a reduction of a little less than 35% in the tensile strength and completely recovered their hardness in the HAZ, but had a reduction of almost 50% of hardness in the FZ, making the material unable of deforming plastically and hence making to this zone of brittleness, which can be verified with the strain-strain graph and the elongation which was only 5%. In this way it was verified that welding causes loss of severe mechanical resistance in the AA6351-T6 aluminum alloy and the artificial aging treatment recovers the resistance in the HAZ, but it greatly reduces the resistance in the FZ making the weld bead a zone subject to breakage.