Directional electrostatic accretion process employing acoustic d

Details Directional electrostatic accretion process employing acoustic d Directional electrostatic accretion process employing acoustic d

1995-06-05

1998-03-03

Lavinder, Jack W.

Metal founding

Process

Disposition of a gaseous or projected particulate molten...

1641551, 264 9, 425 6, B22D 2300

Patent

active

057224790

ABSTRACT:
The present invention is directed to an apparatus for manufacturing a free standing solid metal part. In the present invention metal droplets are ejected in a nozzleless fashion from a free surface pool of molten metal by applying focused acoustic radiation pressure. The acoustic radiation pressure is produced by high intensity acoustic tone bursts emitted from an acoustic source positioned at the bottom of the pool which directs the acoustic energy at the pool surface. The metal droplets are electrostatically charged so their trajectory can be controlled by electric fields that guide the droplets to predetermined points on a target. The droplets impinge upon the target and solidify with the target material. The accretion of the electrostatically directed solidified droplets forms the free standing metal part.

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Paper: additional Information on the D.E.A.P. Process Development at NASA Lewis Research Center Jul. 12, 1993.

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