4. Manufacturing supports
During manufacturing, the temperature of the chamber is very far from the melting point of the powder, unlike laser sintering on a bed of polymer powders, so material shrinkage is significant. Therefore, if the first layers of a part manufactured by laser are not securely clamped to the manufacturing plate by supports, they will warp. Furthermore, if there are not enough supports or if they are not sturdy enough, the manufacturing process can "crash." The layering system can then become blocked by a part of the part being built that lifts up (figure 9 ). In this case, manufacturing must be restarted from the beginning, taking care to provide more sturdy or more numerous supports. Figure
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Manufacturing supports
Bibliography
- (1) - AYRE (M.) - DMLS design guide V4. - http://prezi.com/qgiujvngqxj0/ copy-of-dmls-design-guide-v4/
- (2) - MANFREDI (D.), CALIGNANO (F.), KRISHNAN (M.), CANALI (R.),...
Standards and norms
- Standard specification for additive manufacturing Titanium-6 Aluminium-4 Vanadium with powder bed fusion - ASTM F2924-12 - 2012
- Surgical implants – Metal-based products. Part 3: Forging alloy based on titanium, aluminum 6, and vanadium 4 - ISO 5832-3 - 1996
- Aluminium et alliages d'aluminium. Pièces moulées. Composition chimique et caractéristiques mécaniques - NF EN 1706 - 05-10
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Laser melting machine manufacturers
3D SYSTEMS (formerly PHENIX SYSTEMS) http://www.phenix-systems.com/
LASER CONCEPT http://www.concept-laser.de/
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