Authors:
Lea Reineke (Fraunhofer IFAM, Germany),
Bastian Barthel (Fraunhofer IFAM, Germany)
Abstract:
Metal Binder Jetting (MBJ) has an increasing attention in additive manufacturing because of its serial production potential. The aim of this work is to achieve the most suitable parameterization of the MBJ printing processes for specific powder-binder combinations, based on the powder characteristics and the powder-binder interaction. Depending on wetting properties and acting capillary forces, some MBJ powders need more or less binder to generate parts with optimal properties. The use of too high binder saturations generally leads to density loss due to binder application, as well as increased carbon content of the final sintered part or even loss of geometrical features. Too low saturations result in low green strength as well as low part accuracy. The economic background of the development of pre-printing tests is a reduction in the number of iteration stages in material-specific process development, which saves costs, effort as well as material resources and printing capacity.
DOI:
https://doi.org/10.59499/WP225367722