Journalartikel
Autorenliste: Riaz, Abdullah; Toellner, Philip; Dreier, Tim; Nazir, Jamal; Springer, Armin; Seitz, Hermann
Jahr der Veröffentlichung: 2024
Seiten: 1075-1086
Zeitschrift: Journal of Manufacturing Processes
Bandnummer: 120
ISSN: 1526-6125
eISSN: 2212-4616
Open Access Status: Hybrid
DOI Link: https://doi.org/10.1016/j.jmapro.2024.05.008
Verlag: Elsevier
Abstract:
Composite extrusion modeling is an advanced material extrusion additive manufacturing process that requires fine-tuning of printing parameters for printing injection molding feedstocks. In order to achieve comparable high-quality parts at different layer thicknesses, the parameters must be optimized for the respective layer thicknesses. In this work, the printing parameters for AISI 8740 low-alloy steel injection molding material are optimized for four different layer thicknesses. The extrusion multiplier values for each layer thickness are tuned, allowing fine adjustment of the printer's screw rotation speed at every layer thickness, resulting in all final parts' maximum densities (>= 98 %) with high accuracies. Scanning electron microscope images, surface roughness measurements, and printing precision tests proved the good and comparable high-quality of all optimized printed parts. Young's modulus, tensile and yield strengths also raised by -24 %, -16 % and -15 %, respectively, compared to the non-optimized printed sintered part. The achieved tensile strength range of (-888-947) MPa and yield strength range of (-574-586) MPa of all optimized printed sintered parts were also higher than those provided by the feedstock manufacturer. This promising approach significantly reduces printing time and manufacturing costs without compromising the printed final parts' quality and mechanical properties. The adjusting screw rotation speed methodology allows broader applicability across diverse material extrusion processes.
Zitierstile
Harvard-Zitierstil: Riaz, A., Toellner, P., Dreier, T., Nazir, J., Springer, A. and Seitz, H. (2024) Optimization of the extrusion rate for different layer thicknesses to achieve controlled mechanical properties in MEX 3D printing of low-alloy steel, Journal of Manufacturing Processes, 120, pp. 1075-1086. https://doi.org/10.1016/j.jmapro.2024.05.008
APA-Zitierstil: Riaz, A., Toellner, P., Dreier, T., Nazir, J., Springer, A., & Seitz, H. (2024). Optimization of the extrusion rate for different layer thicknesses to achieve controlled mechanical properties in MEX 3D printing of low-alloy steel. Journal of Manufacturing Processes. 120, 1075-1086. https://doi.org/10.1016/j.jmapro.2024.05.008
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