|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||CFD Modeling and Simulation in Materials Processing
||Implementing CFD Modelling to Address Defect Formation in Core Injection Moulding
||Stefano Cademartori, Nicholas James Humphreys, Jean-Christophe Gebelin, Jeffery William Brooks
|On-Site Speaker (Planned)
Ceramic cores are used in investment casting to create complex internal shapes. The work presented here uses CFD analysis of injection moulding, to predict filling and solidification behaviour of the ceramic core, with the aim of developing prediction capabilities of key defects that may only be observed after further expensive manufacturing processes. The filling and solidification of large complex geometries, typical of modern cores, have been simulated. Manufacturing trials using short shots have been carried out in order to validate the transient flow patterns of the paste. This has highlighted the occurrence of jetting, weld lines and flow defects that are highly dependent on the injection parameters and runner designs employed. Analysis of the modelled solidification; shear rates; stagnation points and phase-migration has driven die and process optimisation in a production environment.
||Planned: None Selected