About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Custom Cathode Optimization for Electropolishing Additively Manufactured 316L Stainless Steel |
Author(s) |
Kasandra Escarcega Herrera, Michael Anthony Melia, Mary Louise Gucik, Jason Taylor |
On-Site Speaker (Planned) |
Kasandra Escarcega Herrera |
Abstract Scope |
Laser powder bed fusion (LPBF) has become increasingly popular for its ability to create complex geometries. However, LPBF creates tortuous surfaces that may degrade overall performance. Consequently, post-processing is often needed for LPBF parts through techniques such as electropolishing (EP). Utilizing COMSOL, this project aims to enhance EP of a LPBF 316L T-shaped part in a polyethylene glycol/NaCl based electrolyte by optimizing the cathodes to smooth the T-shaped surface more efficiently. First, different electrode spacings were experimentally compared using a 316L flat lattice cathode. Next, cylindrical and conformal cathodes of increasing sizes were evaluated. Based on those results, a cathode was then optimized using COMSOL to polish an anode selectively and uniformly. Roughness measurements and optical images were acquired and compared before and after polishing to quantify EP efficacy.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525.
SAND2024-04664A |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |