| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Effect of Pre- and Post-Contouring Strategies on the Sloped Downskin Surfaces of Laser Powder-Bed Fusion Parts. |
| Author(s) |
Nismath Valiyakath Vadakkan Habeeb, Rabiul Islam, Kevin Chou |
| On-Site Speaker (Planned) |
Nismath Valiyakath Vadakkan Habeeb |
| Abstract Scope |
The L-PBF technique is known for fabricating intricate components without using support structures. However, due to the step edge formation and attachment of powder particles, attaining a good surface finish on these parts is challenging. Contouring the scanning region is a possible way to address this issue. This study evaluates the effects of pre- and post-contouring strategies on the downskin surfaces of sloped parts fabricated by L-PBF. The Ti6Al4V parts were printed at inclination angles of 30°, 45° and 60° using both contouring strategies. A double-contouring approach with varying processing conditions was employed and their effects were studied from the surface measurement analysis. The pre-contouring resulted in comparatively smoother downskin surfaces. Also, the parts inclined at 60° have less overhang area and hence resulted in lower surface roughness. In both strategies, low laser power and high scan speed caused less dross formation on the downskin surfaces. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |