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Magnetohydrodynamic formation of support structures for metal manufacturing

  • US 10,639,717 B2
  • Filed: 03/06/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 03/03/2016
  • Status: Active Grant
First Claim
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1. A method of additive manufacturing, the method comprising:

  • providing a liquid metal in a fluid chamber at least partially defined by a housing, the fluid chamber having an inlet region and a discharge region;

    directing a magnetic field through the housing;

    moving the discharge region in a controlled three-dimensional pattern; and

    delivering electric current between electrodes at least partially defining a firing chamber within the fluid chamber between the inlet region and the discharge region, the electric current intersecting the magnetic field in the liquid metal in the firing chamber to eject the liquid metal from the discharge region; and

    changing a velocity of the liquid metal ejected from the discharge region therein controlling porosity of one or more predetermined portions of an accumulation of the ejected liquid metal on a build plate or on a previously deposited layer of metal.

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