Additive Manufacturing Flashcards
different AM processes
- Vat photo-polymerisation
- Material jetting
- Binder jetting
- Material extrusion
- Powder bed fusion
- Directed energy deposition
- Sheet lamination
explain vat photo-polymerisation, and the three different types
using light to selectively solidify layers of a photopolymer resin, building up a 3D object
- top-down
- bottom-up
- two-photon
explain material jetting, and the different variations
a 3D printing process where droplets of material and support/resin are selectively deposited layer by layer to create objects.
- curling by cooling down
- curling by light
- curling by heat
explain binder Jetting, and the different variations
a liquid binding agent is selectively deposited onto a powder bed layer by layer to create a three-dimensional object.
- normal
- colour jetting
explain material extrusion
Often referred to as 3D Printing
a thermoplastic filament is heated and extruded through a nozzle, layer by layer, to create a three-dimensional object
- Direct extrusion
- Bowden extrusion
- Pellet dispenser
- Paste dispenser
explain Powder Bed Fusion
A laser selectively fuses the powder particles in the desired areas, After each layer is fused, the build platform is lowered, and a new layer of powder is spread.
- Laser system
- Electron beam
explain Directed Energy Deposition DED
heat source melts a feedstock material, and the molten material is deposited layer by layer to build up a three-dimensional object
- Laser system
- Electron Beam system
- Wire Arc AM
explain Sheet Lamination
layers of material, often in the form of sheets, are fused together to create a three-dimensional object
- Stack then cut
- cut then stack
advantages of AM
- increased design freedom
- lower start-up costs
- reduced waste
- shorter lead times
(order quote less than 100)
define sintering
heating powder particles to a temperature below their melting point but high enough to cause bonding, this results in the formation of a solid mass with improved mechanical strength
