Correlation Of Different Cemented Carbide Starting Powders With The Resulting Properties Of Components Manufactured Via Binder Jetting

Authors:

Christian Berger (1), Johannes Pötschke (1), Uwe Scheithauer (1), Markus Krause (2), David Wonn (2)

1- Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Winterbergstraße 28, 01277 Dresden, Germany

2- ExOne GmbH, Daimlerstrasse 22, 86368 Gersthofen, Germany

Abstract:

For some years now, the production of WC-Co hardmetals via the powder-based additive manufacturing process binder jetting has been pursued. Compared to alternative AM processes Binder jetting offers the possibility of high production. Due to the powder-based process, the green bodies usually have a low green density, which means that only higher Co contents with lower resulting hardness’s are possible. By choosing the right starting powder and a suitable post-processing, the previous limits can be extended, and the appropriate powder can be chosen depending on the application. In the context of this study, the correlation between different WC-Co starting powders with different morphologies is investigated and evaluated for their processability in the BJT process and for the resulting mechanical properties of sintered components.

DOI:

https://doi.org/10.59499/EP235765382