| About this Abstract |
| Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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| Symposium
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Applications
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| Presentation Title |
Binder Jet Additive Manufacturing for Low CTE Washout Tooling |
| Author(s) |
Dustin Gilmer, Lu Han , Michelle Lehmann, Amelia Elliott, Tomonori Saito |
| On-Site Speaker (Planned) |
Dustin Gilmer |
| Abstract Scope |
Tooling is one of the emerging industrial uses for Additive Manufacturing (AM). One promising AM technique for creating tools is Binder jet AM which can create tools from virtually any powdered materials utilizing selective ink-jetting of a binding fluid (binder) into layers of powder. This produces a composite of particles bound with the binder and by utilizing a low CTE ceramic material as the powder in this process and hyperbranched polyethyleneimine (PEI) as the binder enables the creation of composite ceramic tooling. This composite ceramic tooling exhibits strength up to 6.25 MPa at a 5.5 wt% binder content in the parts. The strength can be further increased utilizing post-processing such as customized coating and infiltration with a secondary component to 50 MPa or more. This ceramic tooling also has functional water solubility while maintaining a low CTE, making it ideal for washout mandrel for composite tooling. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |