Authors:
J.A. Naranjo (1,2), G. Perez, C. Berges (1,2), J. Hidalgo (1,2), G. Herranz (1,2)
1- Escuela Técnica Superior de Ingeniería Industrial (ETSII), Av. Camilo José Cela s/n, 13071, Ciudad Real, Spain.
2- Instituto de Investigaciones Energéticas y Aplicaciones Industriales (INEI), Camino de Moledores 33, 13005. Ciudad Real, Spain.
Abstract:
The development of materials using master alloys has many advantages over pre-alloyed powders, such as better preservation of the shape of the parts at a more competitive cost. This type of alloy is commonly used for Metal Injection Moulding (MIM), which makes its use in 3D printing very interesting. However, its use for sinter based additive manufacturing technologies is not obvious, as it requires a detailed analysis of its flowability to accomplish a unique feedstock processable by MIM and Fused Filament/Pellets Fabrication (FFF/FPF) technologies (hybrid feedstock). Rheological and experimental criteria are used in which suitable flow characteristics are pursued. The measured parameters allow the selection of the optimum metal content of the feedstock to achieve a balance between MIM, FFF and FPF requirements, guaranteeing the industrial viability of the feedstock. After green shaping, debinding and sintering, the results concerning the final density, microhardness, tensile strength, shrinkage and dimensional accuracy are discussed.
DOI:
https://doi.org/10.59499/EP235765138