Vigilancia Tecnológica

In this study, an innovative manufacturing approach using bronze?filled polylactide filament with a material extrusion (MEX) 3D printer is presented. By incorporating internal channels for gas expulsion, the debinding and sintering process is optimized, reducing component distortion. The investigation included 3D scans, SEM micrographs, and spectroscopic analysis. The results are encouraging and hold significance for low?cost metal printing technologies.To lower the cost of additive manufacturing of metallic components, the goal of this work is to investigate and optimize a multi?step process by material extrusion (MEX) of a polylactide filament loaded with bronze to remove the gas produced during the debinding and sintering steps. First, by adjusting the infill (10%, 50%, and 100%), and then by designing and constructing internal passages to aid in the expulsion of gases that occur during the debinding, a calibration cube is created. Additionally, the impact of the cooling period during the debinding is examined. To assess how the technique changes shape, sizes, and internal structure, all the samples are ultimately weighed, scanned, and cut. In order to reduce deformation occurred during the debinding and sintering gases, a new design method has been developed. The method consists of the generation of internal channels which connect the voids of the infill and allow gases to flow out through a central channel. As seen, samples with ejection channels and an intermediate infill (i.e., 50%) both exhibit better attributes.