Tunable layer adhesion for fused filament fabrication of metallic build materials
AssigneeDesktop Metal, Inc.
InventorsNicholas Graham Bandiera, Uwe Bauer, Emanuel Michael Sachs
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AssigneeDesktop Metal, Inc.
InventorsNicholas Graham Bandiera, Uwe Bauer, Emanuel Michael Sachs
Estimating the term…
Fused filament fabrication using metal based multi-phase (MBMP) build materials, creates a build with object portions and support portions adhered to each other that must be separated. Different object portions are more delicate or problematic than others. Methods for tuning or specifying the strength of adhesion at interfaces between such object and support portions include providing a release skin of powder or other material at such interfaces. Strength of adhesion also varies based on the liquid fraction of material deposited to form interfaces, generally with relatively higher liquid fraction leading to stronger adhesion. Liquid fraction is governed by MBMP material composition and temperature at deposition. Strength can be tuned by printing interfaces of the same material at different temperatures, or different materials at the same or different temperatures. Support portions may be entirely of weaker adhesion. Joining portions may separate with object or support.
A method of fabricating a fused filament fabrication (FFF) build from metal based multi phase (MBMP) material, comprising an object portion and a support portion, the method comprising:
A build fabricated by fused filament fabrication (FFF) from metal based multi phase (MBMP) material, comprising:
21-30. (canceled)
Dependencies are inferred from the claim text.