About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Melt Pool Size Control in LENS Direct Metal Deposition |
Author(s) |
Brandon Botchway, Elias Snider, Douglas Bristow |
On-Site Speaker (Planned) |
Douglas Bristow |
Abstract Scope |
Metal additive manufacturing processes that utilize direct energy deposition (DED) can be more efficient than their selective laser melting (SLM) counterparts, especially for smaller parts that would not utilize the full size of the powder bed in SLM. Blown powder processes (a subset of DED) utilize a stream of powder directed into the focus of a laser to deposit material in precise locations to build a part. The process dynamics in this process, however, are not always well-behaved and can result in very rough surface finishes or even failed prints due to amplified propagating variations in material deposition along the path. Melt pool size control via laser power is explored here as a method of reducing variation and improving the quality of deposition in the blown powder process. The experimental setup, image processing methods, and results for various single-bead builds are presented. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |