About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Beyond the Beam III
|
Presentation Title |
Print Parameter Effects on Porosity Distribution in Binder Jetting of WC-Co |
Author(s) |
Paul D. Prichard, Hadi Miyanaji, Zhuqing Wang |
On-Site Speaker (Planned) |
Paul D. Prichard |
Abstract Scope |
Cemented tungsten carbide is an important industrial material, which is typically manufactured into metal cutting tooling and wear components by conventional powder processes. However, complex cemented tungsten carbide components with unique features can be additively manufactured by the binder jetting, which is more suitable than energy beam processes for producing non-weldable materials. The interrelationship between powder flowability and printing parameters determines the size, orientation, and distribution of porosity. These characteristics affect the powder flowable and the energy absorbed during the binder droplet impact. The jetting of binder into a powder bed has been shown to introduce porosity due to powder particle ejection. In addition, an excessive amount of binder may produce binder pooling to create large voids, which may not be easily closed during sintering. This presentation will discuss the interaction between powder characteristics, print parameters and binder fluid characteristics which create porosity during printing and sintered product. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Powder Materials, Process Technology |