Molten material interfaces for magnetohydrodynamic metal manufacturing
First Claim
Patent Images
1. A method of three-dimensional printing of metal, comprising:
- providing a liquid metal in a firing chamber at least partially defined by electrodes, the firing chamber in fluid communication with a discharge region defined by a housing supporting the electrodes;
directing a magnetic field into the liquid metal in the firing chamber; and
delivering electric current from the electrodes into the liquid metal in the firing chamber in a direction intersecting the magnetic field in the firing chamber to eject the liquid metal as droplets from the discharge region to form an object, wherein the electrodes and the liquid metal are substantially the same material at a respective interface between each electrode and the liquid metal, and wherein the electrodes and the liquid metal are each aluminum or an aluminum alloy.
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Accused Products
Abstract
Devices, systems, and methods are directed to applying magnetohydrodynamic forces to liquid metal to eject liquid metal from a nozzle along a controlled pattern, such as a controlled three-dimensional pattern as part of additive manufacturing of an object. Electrodes used to deliver electric current across a firing chamber of the nozzle are formed of the same material as the liquid metal being ejected from the nozzle. For example, respective interfaces between the electrodes and the liquid metal can be molten material. Forming the electrodes and the liquid metal of the same material can facilitate, for example, ejecting liquid metals having high melt temperatures.
45 Citations
11 Claims
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1. A method of three-dimensional printing of metal, comprising:
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providing a liquid metal in a firing chamber at least partially defined by electrodes, the firing chamber in fluid communication with a discharge region defined by a housing supporting the electrodes; directing a magnetic field into the liquid metal in the firing chamber; and delivering electric current from the electrodes into the liquid metal in the firing chamber in a direction intersecting the magnetic field in the firing chamber to eject the liquid metal as droplets from the discharge region to form an object, wherein the electrodes and the liquid metal are substantially the same material at a respective interface between each electrode and the liquid metal, and wherein the electrodes and the liquid metal are each aluminum or an aluminum alloy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification