Per: Alison Sehn Hilgert (Instituto Militar de Engenharia), Artur Torres Netto (Instituto Militar de Engenharia), BARBARA COSTA BERRIEL ABREU (Instituto Militar de Engenharia), CARLOS FERNANDO MOTTA NOGUEIRA (Instituto Militar de Engenharia), DAVI GOMES CORINO DE MELO (INSTITUTO MILITAR DE ENGENHARIA), GUSTAVO LARANJEIRA ALVES (INSTITUTO MILITAR DE ENGENHARIA), Aroldo Mendes Paiva Neto (Instituto Militar de Engenharia), Andersan dos Santos Paula (Instituto Militar de Engenharia)
Abstract:
In the context of the growing development of products through additive manufacturing methods, Selective Laser Melting (SLM) machines process parts by interacting a laser energy source with a pre-deposited powder bed, layer by layer until forming the final product. Although the SLM process can be used for product development, identifying the necessary parameters for optimal processing becomes essential to gain advantages in the additive manufacturing market and to avoid failures of the manufactured parts in their intended applications due to properties being out of range, the presence of cracks, etc. Thus, this article presents the results of the initial processing conducted on the SLM machine - Omnitek SLM Omnisint-160 - recently acquired at Military Engineering Institute (IME). The aim is to evaluate the effect of layer rotation, scanning speed, and single laser scan per irradiated layer, while not changing other parameters (powder layer thickness, track spacing, laser power), and to compare these results with previous work where the layer was double irradiated by the laser. The observed results highlighted lower densification with a single scan per layer, and for this condition, higher densification in cases where layers were rotated by 67º at both depicted speeds