Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Investigating the Relationship Between Mass and Flexural Resistance in Material Extrusion Additive Manufacturing of Carbonyl Iron Components: A Comparative Study with Metal Injection Molding
Submission Author:
Augusto Adami Vidal , SC
Co-Authors:
Augusto Adami Vidal, Fernando Irto Zanetti, Gustavo Alves Lau, Guilherme Fatalla, Arthur Cruz, Aloisio Nelmo Klein, Rodrigo Perito Cardoso
Presenter: Augusto Adami Vidal
doi://10.26678/ABCM.COBEM2023.COB2023-1446
Abstract
Material Extrusion Additive Manufacturing (MEX) is an outstanding technology which allows an efficient and cost-effective solution for indirect fabrication of metallic components without tools or molds shape limitations.. Nowadays, some mechanical parts, like gears and structural elements, are oversized due limitations of conventional manufacturing methods like machining and casting. This study aims to evaluate the capabilities and mechanical properties of MEX components, fabricated via a screw-based device, by conducting a flexural test analysis using three different filling densities to optimize mass and perform resistance analysis, aiming the primary objective of determining the relationship between flexural resistance and component mass. Samples were produced by traditional MIM process and MEX additive manufacturing, both with carbonyl iron based feedstock apllied in pellet form for the MIM process, and powder form for MEX fabrication. Once manufactured via MIM and MEX, samples undergo chemical debinding and sintering via a plasma-assisted method in the same batch. The specimens produced using MEX will feature the same infill parameter, namely a grid parameter with orthogonal lines, with different infill density, while others printing parameters are held constant. Results from the MEX components were compared with those fabricated via Metal Injection Molding (MIM). The samples were evaluated according to the ISO 178 standard, which involves a flexural test analysis widely utilized for assessing the mechanical behavior of polymeric and MIM specimens. Through this methodology, we determined the specific resistance of the samples by analyzing their resistance as a function of mass. The specific resistance was then compared to that of the MIM specimens, which serve as the benchmark for this study. In conclusion, it was possible to demonstrate the optimization of the resistance/mass relation in the MEX specimens.
Keywords
Material Extrusion Additive Manufactuing, Mechanical Properties, Mass Optimization, Powder metallurgy., Plasma Sintering, bending test
