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INDUCTION STIRRED, ULTRASONICALLY MODIFIED INVESTMENT CASTINGS AND APPARATUS FOR PRODUCING

  • US 20130156637A1
  • Filed: 12/20/2011
  • Published: 06/20/2013
  • Est. Priority Date: 12/20/2011
  • Status: Active Grant
First Claim
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1. A casting unit comprising:

  • an investment casting mold having a mold cavity;

    a furnace havinga first zone that receives the investment casting mold,means for generating a convection current in molten metal in the mold when the mold is provided with molten metal,a refractory divider surrounding and defining the first zone;

    insulation surrounding the first zone; and

    an ultrasonic source for delivering an ultrasonic pulse into the mold cavity when the cavity is provided with molten metal and positioned in contact with the bottom of the mold.

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