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Examination And Simulation Of The Flow Behavior Of PIM Feedstocks

  • : Alexander Klein1, Klaus Plewa1, Andreas Stepanov1, Heinz Walter1, Volker Piotter1
  • : 1KIT
  • : PDF Download
  • : 2018

Abstract

Powder injection molding nowadays represents an economic viable large-scale fabrication technology for metal/ ceramic products.

Following the trend to digitally based manufacturing a couple of investigations worldwide deal with the development of simulation programmes taking into account the particular effects of highly particle filled fluidics.

For verification purposes a special experimental tool partially equipped with glass inserts and with the possibility to implement different mold inserts had been developed at KIT. Through the glass section an inline observation of the filling process was feasible. Parameters and cavity geometries had been varied and the occurring flow profiles had been documented by video. In parallel the filling process including the related shear rate profiles was simulated using commercial software routine based on one-phase material model. Depending on the flow profile more or less serious discrepancies between experimental and calculated results were determined.

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