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Plunger Rod Assembly
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To maintain consistent thermal and thus dimensional control of the plunger tip, it is necessary to closely manage the flow of cooling water through the plunger during the casting cycle. Dimensional problems can often be resolved by simply increasing the flow of water.


The rate of flow of cooling water is easily measured, and should be monitored frequently. Rate of flow is much more critical than the temperature of the cooling water.


An adequate flow of coolant through the plunger rod can lead to:

  • Efficient heat transfer in plunger tip.
  • Avoid excessive plunger tip wear.
  • Reduced biscuit solidification and cycle time.
  • Longer shot sleeve life.