Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1982-03-05
1984-06-05
Hampilos, Gus T.
Metal founding
Process
Shaping liquid metal against a forming surface
164503, B22D 1100, B22D 2702
Patent
active
044522975
ABSTRACT:
A multi-strand process is provided for casting molten materials into ingots of desired shape. The process uses two inductors for receiving the molten material and applying the first and second electromagnetic force fields to form the molten material into the ingots. The inductors are located adjacent each other so that the first and second force fields interact with each other. A first device is associated with one of the inductors for applying a first alternating current at a first desired frequency to an associated inductor to generate the first magnetic force field. A second device is associated with the other of the inductors for applying a second alternating current at a second desired frequency to generate the second magnetic force field. The second frequency is set to a desired value in relation to the first frequency in order to control the first and second resulting containment currents circulating in the molten material. The containment currents are due to the first and second force fields and their interaction with each other. The containment currents each have a frequency above a lower established limit so as to prevent formation of substantial melt stirring and containment instabilities in either of the first or second inductors.
REFERENCES:
patent: 3467166 (1969-09-01), Getselev et al.
patent: 3702155 (1972-11-01), Getselev
patent: 3985179 (1976-10-01), Goodrich et al.
patent: 4014379 (1977-03-01), Getselev
patent: 4161206 (1979-07-01), Yarwood et al.
Kindlmann Peter J.
Tyler Derek E.
Ungarean Gary L.
Yarwood John C.
Cohn Howard M.
Hampilos Gus T.
Johnson Jerold L.
Kelmachter Barry L.
Olin Corporation
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