3. Extrusion based additive processes Flashcards
1
Q
Fused deposition modelling (FDM)
A
Principle: heated nozzle liquifies polymer and lays line which consolidate by liquid phase bonding, mostly two nozzles, build and support material
ABS most suited
2
Q
Dis/Advantages of FDM
A
simple, clean, safe operation
custom parts
patterns for vacuum casting
almost exclusively for ABS and PLA
less accurate than SLA
low manufacturing speed
anisotropy of part properties
3
Q
Ballistic particle manufacturing (BPM)
A
Droplets out of molten wax in an array placed by nozzles
4
Q
Dis/Advantages of BPM (compare to FDM)
A
cheaper material
faster
low mechanical properties of part
5
Q
Laser metal wire deposition (LMWD)
A
extruded metallic wire is molten by a laser, similar to FDM
