About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Understanding the Impact of Printing Strategies on Drop-on-Demand Molten Metal Jetting Technologies |
Author(s) |
Xiangyun Gao, Negar Gilani, Mark East, Marco Simonelli, Nesma Aboulkhair, Richard Hague |
On-Site Speaker (Planned) |
Xiangyun Gao |
Abstract Scope |
Drop-on-demand Molten Metal Jetting (DoD-MMJ) facilitates precise voxel-by-voxel deposition of metal droplets. However, this drop-on-drop deposition method may create pores between adjacent droplets, compromising printed part functionality. This study examines droplet packing strategies across various substrate temperatures to assess their impact on the physical and electrical properties of printed components. MetalJet, as a bespoke DOD-MMJ technology, is applied to print Sn at 650°C using four packing strategies across 50°C, 100°C and 150°C substrate temperatures. The effectiveness of each strategy in achieving full-density is determined through CT tomography scan analysis and the influence of the packing strategy on surface roughness and electrical conductivity is evaluated. The most effective strategies to create a full-dense part at high substrate temperatures and to mitigate challenges from residual stress at low substrate temperatures are identified. These insights are crucial for tailoring deposition strategies to specific functional requirements, thereby unlocking greater potential for future multi-material research. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |