To determine permeability and grain fines no of molding sand sample.

Core Permeability Tube

  • ·   Take out the sample from the split specimen tube on the drawing plate.
  • ·    Allow the specimen to set dry.
  • ·    Insert the sample carefully in between core permeability tube.
  • ·    Seal the gap between the sample and core permeability by pumping air by the air pump.
  • ·    Place the core permeability tube on rubber boss of VP.VEP and follow the usual procedure for determining permeability number.
  • ·    After each test release the air from the special rubber tube by unscrew the air inlet valve and remove the sample.

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