WINDFORM® PS

Category: PS (Specialty) , Specialty Polystyrene
Manufacturer: CRP Technology s.r.l.
Trademark: WINDFORM®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: DWYgf5_WINDFORM-PS.pdf
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Technology: Selective Laser Sintering

Windform® PS is a new polystyrene based material, developed specifically to produce complex investment casting patterns. The sintered patterns are ideal for conventional wax infiltration, and become easy to handle and finish. Windform® PS patterns are designed to work within regular rapid casting procedures, including autoclave and flash firing steps, low-temperature furnaces and vacuum plaster casting methods. Improved properties, compared to other polystyrene materials already available on the market, and that make the difference, are:
  • Improved surface quality and fine feature preservation
  • Reduced "curling" effect on the first layers
  • Very low ash content, therefore well suited for highly reactive alloys, such as Titanium, Aluminium, Magnesium, Steel and Nickel based alloys.

Applications:
  • Complex investment casting patterns
  • Casting with highly reactive alloys, as well as conventional cast alloys

The casting structure is formed from an aggregate of grains or polyhedral crystallites which produce isotropic compensation: it is obvious that isotropy has great advantages, for instance, FEM calculations are very close to the real behaviour of the part. Moreover, Rapid Casting with laser sintered patterns allows complete design freedom (no support structures are needed): thus reducing undercut and tool path problems during CNC machining. It's therefore possible to create the product along its mechanical stress axes, and to obtain a perfect reproduction of all details of the RP pattern, with tolerances and surface finishing of a very high quality (such as fully machined parts).
General Information
Features
  • Autoclavable
  • Outstanding Surface Finish
Uses
  • Mold Making
  • Molds/Dies/Tools
Forms
  • Powder
Processing Method
  • 3D Printing, Laser Sintering/Melting
PhysicalNominal ValueUnitTest Method
Water Absorption (Equilibrium, 23°C, 50% RH)< 0.10%ISO 62
Ash Content < 0.020%ASTM D482
Bulk Density - Tap 380 to 480g/lASTM D4164
Particle Size - Average 45.0 to 59.0µmISO 13320
Particle Size Distribution - 90% 25.0 to 100.0µmISO 13320
ThermalNominal ValueUnitTest Method
Glass Transition Temperature 86.5 to 88.5°CDSC
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