Fotec Analysis and Know-how Switch, the analysis firm of the College of Utilized Sciences Wiener Neustadt, has developed important parts for integrating additive manufacturing into industrial course of chains as a part of the worldwide joint mission ‘Advert-Proc-Add II’. The main target was on automated post-processing utilizing ‘Hirtising’ – a mixture of chemical, dynamic electrochemical, and hydrodynamic processes that doesn’t require mechanical processing. Hirtising, which relies on liquid media, additionally treats deep cavities and undercuts on printed parts, that means that assist buildings can be eliminated. Many parts may be Hirtised concurrently within the machines.
A spotlight of Fotec’s contribution was the additional improvement of Hirtising. Constructing on the outcomes of a earlier mission, focused machining methods have been developed for supplies comparable to Ti6Al4V and 1.4404 (stainless-steel). By adjusting the PBF-LBM course of parameters, machining allowances of solely 180 to 550 micrometres could possibly be outlined. That is thought of an necessary step in direction of material-saving, automated post-processing of 3D printed elements. On the similar time, floor roughness values of Ra ≤ 5 micrometres have been achieved, enabling exact functionalization of such parts. The mission additionally pursued the characterization of additively manufactured surfaces and the event of databases for course of optimization.
Fotec performed in depth investigations into the floor integrity of additively manufactured parts. The goal was to analyse how totally different PBF course of parameters, construct orientations, and intermediate remedies have an effect on the ultimate floor properties. A specific focus was positioned on the interplay with processes comparable to shot peening (blasting), warmth therapy, and CNC type grinding. The ensuing floor matrix supplies a sound foundation for the focused mixture and optimization of additive and subtractive course of steps.
A major contribution to digital consistency on this space was the event of a cross-process knowledge administration system, which was created within the present mission by the Institute for Manufacturing Know-how and Photonic Applied sciences at TU Wien in collaboration with mission companions. A prototype hybrid CAM system was provided with multi-sensor-supported real-time knowledge, which was used to generate instrument paths mechanically. The mixing of sensor know-how, materials knowledge, and geometry info has enabled the event of an ‘clever’, adaptive CAM management system, which represents a milestone within the automation of advanced ASM (additive-subtractive manufacturing) course of chains.
The Fotec outcomes have been characterised by a excessive diploma of utility orientation. Throughout the mission, take a look at specimens and use circumstances have been manufactured and analysed from supplies comparable to Ti64, 316L, and AlSi10Mg. Shut cooperation with the 15 industrial companions – together with firms from the aerospace, toolmaking, and medical know-how sectors – ensured that the processes developed may be immediately transferred to actual manufacturing situations.
The mission, funded by the Austrian Analysis Promotion Company (FFG), the German Federal Ministry for Financial Affairs and Local weather Motion (BMWK), and the Flanders Company for Innovation & Entrepreneurship (Vlaio) – coordinated by the ecoplus Mechatronics Cluster, FKM, and KU Leuven – aimed to make additive-subtractive manufacturing chains economically viable, even for small and medium-sized enterprises (SMEs). Fotec acted as a pacesetter within the subject of laser powder mattress fusion (PBF-LB/M) and electrochemical and mechanical post-processing.