Abstract
The applicability of different low density rigid polymer pattern materials for investment casting process was experimentally investigated. The studied materials included polymer foam of different densities and compositions as well as SLA polymer patterns with internal honeycomb structure produced by stereolithography. Densities and elastic moduli of polymer patterns were measured and used for finite element modeling of possible pattern deflection during shell building. Pattern removal process from the shell was examined by thermo-gravimetric analysis. Stress in the ceramic during pattern removal by firing was simulated using experimentally measured thermal expansion. Comparison was done among physico-chemical properties of different low density rigid polymer pattern materials important for the investment casting process.
| Original language | American English |
|---|---|
| Title of host publication | Proceeding of Investment Casting Institute Annual Technical Conference and Equipment Expo |
| State | Published - Oct 2011 |
Keywords
- Characterization
- Large steel investment casting
- Low density polymer patterns
DC Disciplines
- Mechanical Engineering