Process Theory and Practice

  • Frank Czerwinski

Injection molding is generally known for highly effective process control. For polymer extrusion a significant amount of knowledge has been accumulated, describing both the melt preparation and injection stages. Some mechanisms, acting during the polymer melt preparation, are applicable for metal molding. However, a replacement of polymer, having low thermal conductivity and high viscosity, with highly conductive magnesium with a viscosity up to 50 times lower, introduces essential differences (Table 5.1). The stage of injection and mold processing differs completely from polymer molding and exhibits, rather, similarities to die casting. However, change from an overheated molten metal used in die casting to the semisolid slurry or melt with accurately controlled temperature creates differences at this stage as well.


Injection Molding Mold Cavity Mold Filling Mold Processing Semisolid Slurry 
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Copyright information

© Springer 2008

Authors and Affiliations

  • Frank Czerwinski
    • 1
  1. 1.Development EngineeringHusky Injection Molding Systems Ltd.Bolton, OntarioCanada

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