ANNEALING INFLUENCE ON 3D PRINTED PARTS WITH AMORFOUS STRUCTURES.

Continuous research in the field of 3D printing, and the study of the resulted parts from the FFF (Fused Filament Deposition) manufacture, demonstrated the possibility and usefulness of applying post-processing by heat treatment on parts from different materials. In most cases, it has been shown that both parts with semi-crystalline structure (PLA) and those with amorphous structure (ABS, ASA) can be subjected to heat treatment, ensuring enhanced mechanical properties. This article presents the influence of the heat treatment applied to ASA (acrylonitrile styrene acrylate) parts, especially in the layer change zone. The parts were in the form of standardized specimens (ISO 527-2 type 1B), which were subjected to tensile tests. The results showed that, under the right annealing temperature for minimum dimensional changes, the tensile strength of the parts was increased, even in the layer change zone. [ABSTRACT FROM AUTHOR]