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A Design Study in Metal Matrix Composite Castings - AAAV Transmission Case                                           

Option A - Low Parting Line with Base Plate Down

 
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In Option A, the parting line is low on the mold cavity.  This will give smooth nonturbulent metal flow into the mold cavity and will minimize bubbles and oxide particulates.

This mold design has one critical shortcoming --

  • The base plate is in the drag and the more  critical spline section is in the vertical wall with a risk that voids and/or oxides will form in that feature.

For this reason, Option A is not the best mold design.


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