Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1981-10-19
1984-05-22
Godici, Nicholas P.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164423, 164437, 164449, 164463, 222595, B22D 1106, B22D 1110, B22D 1116
Patent
active
044495684
ABSTRACT:
Apparatus is provided for controlling the extrusion of molten metal from a tundish through a nozzle onto a rotating quenching surface in the high speed continuous casting of glassy metal alloy continuous filaments. An inverted pressure bell is disposed in the tundish containing molten metal. A controller, in response to the sensing of the liquid level outside the pressure bell, regulates the gas pressure inside the pressure bell to maintain a constant liquid level outside the pressure bell as molten metal flows from the tundish through the nozzle and therefore to maintain a substantially constant pressure at the nozzle inlet. As the quantity of the molten metal in the tundish is depleted, the controller, in response to the sensing of the gas pressure inside the pressure bell, causes molten metal to be supplied to the tundish as a low liquid level limit is approached in the pressure bell. In addition to the control function during steady state operation, the apparatus provides for nearly instantaneous on-off capability by rapid reduction of the bell pressure to a subatmospheric pressure, thus facilitating interruption of the casting operation.
REFERENCES:
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patent: 3510345 (1970-05-01), Marchant
patent: 3522836 (1970-08-01), King
patent: 3538884 (1970-11-01), Carreker, Jr. et al.
patent: 3856074 (1974-12-01), Kavesh
patent: 3881541 (1975-05-01), Bedell
patent: 3938583 (1976-02-01), Kavesh
patent: 3939900 (1976-02-01), Polk et al.
patent: 3976117 (1976-08-01), Olsson
Allied Corporation
Batten, Jr. J. Reed
Buff Ernest D.
Fuchs Gerhard H,.
Godici Nicholas P.
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