Authors:
Volker Piotter (1), Alexander Klein (1), Klaus Plewa (1), Thi Tra My Nguyen (1), Heinz Walter (1)
1- Karlsruhe Institute of Technology (KIT), Institute for Applied Materials (IAM-WK)
Abstract:
Precise and reliable simulation of Powder Injection Molding (PIM) process steps requires particular determination of material parameters. Compared to pure or low-filled polymers, however, feedstocks often show significantly different flow behaviour.
In this respect, recent investigations at KIT targeted the impact of Bagley pressure correction on simulation accuracy. Calculations were performed using corrected and non-corrected data followed by real injection molding experiments including pressure and temperature measurements during mold filling. As expected, precise simulation results could only be achieved if corrected pressure values were applied. In case of PIM feedstocks (40vol% filling of zirconia powder), however, simulation were correlated well to experimental results irrespectively whether the pressure data had been corrected or not. Conclusions on flow conditions during viscosity measurements will be proposed.
DOI:
https://doi.org/10.59499/EP235765208