About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Powder Bed Interaction with Higher Translation Speed Electron Beams Path for the Area Printing |
| Author(s) |
Thulasi Raman Kamalakshi Hemachandran |
| On-Site Speaker (Planned) |
Thulasi Raman Kamalakshi Hemachandran |
| Abstract Scope |
Advanced energy sources for metal additive manufacturing are continually being explored to achieve higher build rates. Laser-based AM machines can reach scanning speeds of up to 10 m/s with state-of-the-art galvanometer technologies. Electron beam (EB) speeds approaching 8000 m/s are achievable in EB melting (EBM) processes. As an alternative to galvo-based systems, photon sources combined with optical valves are being investigated for area printing. Similarly, EB-based flash printing or area printing is feasible at much higher scanning speeds. EB systems can practically achieve speeds close to 250,000 m/s or beyond. At such high beam speeds, the interaction with the powder bed resembles area exposure rather than point melting or hatching. This work discusses the interaction of electron beams with metal powders at elevated translation speeds. Correcting the beam profile to a Gaussian shape remains a significant challenge under these conditions, but it could potentially be addressed through the use of advanced control system. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |