Authors:
Robert Teuber (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Germany)
Thomas Weißgärber (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, TUD Dresden University of Technology, Germany)
Sebastian Riecker (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Germany)
Niklas Herzer (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Germany)
Dirk Handtrack (Plansee SE, Austria)
Bernhard Mayr-Schmölzer (Plansee SE, Austria)
Abstract:
The present study investigates the processing of tungsten heavy alloy in sinter-based additive manufacturing. A process chain was developed for the processing of a Densimet 185 (97 % W, remainder Ni, Fe) metal powder into a paste and its subsequent 3D printing using the MoldJet process. The possibility of producing tool inserts with tool-specific cooling and the advantages of combining additive manufacturing and WHA will be demonstrated. The MoldJet process is a novel, sinter-based additive manufacturing technology which enables the production of a wide range of geometries without the need for support structures. The challenges of developing a metal powder suspension for the process, the thermal debinding and sintering are discussed. Finally, the resulting microstructures as well as the chemical and mechanical properties of the material are presented.
DOI:
https://doi.org/10.59499/EP256766162
