About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Binder Jetting of Aluminum 6061 and Ti64: Highlights in Reactive Metal Sintering and Distortion Control using LiveSinter |
Author(s) |
Patrick Shannon Dougherty, Tim Daugherty, Debbie Wilhelmy , Haden Calegan |
On-Site Speaker (Planned) |
Patrick Shannon Dougherty |
Abstract Scope |
Binder jet additive manufacturing (AM) has a number of unique advantages compared to other AM including isotropic microstructure, wider range of materials, cheaper/faster throughputs. However, its reliance on successful debinding and traditional sintering technology prohibited sintering of high value materials like Titanium and Aluminum. The challenge with these materials arises from their stable oxide layer and natural affinity to soak up contaminants during processing. ExOne has developed proprietary processes for these materials capable of >98% density using careful design of powder feedstock, print/cure parameters, furnace type/setup, and sintering/debinding cycle. Despite reproduceable materials properties, reliable part geometries represents an ongoing challenge. In this work, furnace optimization will be coupled with design optimization using Desktop Metal's predictive software Live Sinter(TM), in order to combat the sensitivity of printing real part geometries in these high-value materials. Lastly, a state of the art in material properties and dimensional capability will be summarized. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |