Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1981-06-26
1983-11-15
Hampilos, Gus T.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164455, 164503, B22D 1116, B22D 1100
Patent
active
044150172
ABSTRACT:
An electromagnetic casting system for casting materials comprising the apparatus and process for electromagnetically containing and forming molten material during a casting run into a desired shape. During the casting run, a liquid-solid interface defines molten material head and solid material portions of the casting. The electromagnetic containing and forming device includes an inductor applying a magnetic field to the molten material. The magnetic field defines a containment zone for the molten material. An alternating current is applied to the inductor to generate the magnetic field. The improvement comprises controlling the location of the liquid-solid interface in the containment zone. The location of the liquid-solid interface along the periphery of the casting is monitored. In response to the monitored location, in a first mode of operation when the liquid-solid interface varies from the desired set point less than a desired percentage of the inductor length, only the coolant addition is varied to keep the location of the liquid-solid interface substantially constant. In a second mode of operation when the liquid-solid interface varies from the desired set point more than the desired percentage, both the flow rate of molten metal and the coolant addition are changed to return the location of the liquid-solid interface to the desired set point. Upon return of the liquid-solid interface to the set point, cycling back to the first mode of operation occurs.
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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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