Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1977-11-09
1981-09-29
Spruill, R. L.
Metal founding
Process
Shaping liquid metal against a forming surface
164 71, 164260, 164416, 164250, B22D 2702
Patent
active
042917425
ABSTRACT:
The invention relates to a method and apparatus for obtaining an ingot wherein elastic oscillations are directed on metal being crystallized over a broad frequency range and at high intensity in the form of powerful pulses generated by a high-voltage spark discharge in liquid. One form of the apparatus of the invention comprises a discharge chamber filled with liquid in contact with a mould or with melt. The discharge chamber is provided with a system of electrodes connected to a pulse current generator. Upon feeding high-voltage current pulses to the electrodes, high pressure, impulse flows, cavitation and surge waves are built-up in the liquid resulting in the appearance of elastic oscillations acting on the molten metal.
REFERENCES:
patent: 2848775 (1958-08-01), Ettenriech
patent: 3434187 (1969-03-01), Clark et al.
patent: 3845806 (1974-11-01), Schekin et al.
patent: 4022266 (1977-05-01), Vershinsky et al.
Arkulis Grigory E.
Dorokhov Vasily I.
Guly Grigory A.
Klemeshov Georgy A.
Korytov Vladimir A.
Lin K. Y.
Spruill R. L.
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