Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1995-12-21
1998-06-23
Lin, Kuang Y.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164493, 164 46, 75 1024, 266201, B22D 2310, C23C 412
Patent
active
057691517
ABSTRACT:
Methods for controlling the superheat of the stream of molten metal from an electroslag refining apparatus is taught. The methods include the introduction of unrefined metal into an electroslag refining process apparatus in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal is refined as it passes through the molten slag. The refined metal is collected in a cold hearth apparatus having a skull of refined metal formed on the surface of the cold hearth for protecting the cold hearth from the leaching action of the refined molten metal. A cold finger bottom pour spout or exit orifice is formed at the bottom of the cold hearth to permit dispensing of molten refined metal from the cold hearth. The super heat of the molten metal flowing through the exit orifice of the cold finger apparatus is controlled, preferably utilizing a processor, such as a computer, by coordinating the rate of induction heat supplied to the metal within the cold finger apparatus and the rate of heat removal from the metal within the cold finger apparatus through the cold finger apparatus itself thereby providing metal having a specific superheat exiting the exit orifice.
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Benz Mark Gilbert
Carter, Jr. William Thomas
Dupree Paul Leonard
Knudsen Bruce Alan
Zabala Robert John
Cusick Ernest G.
General Electric Company
Johnson Noreen C.
Lin Kuang Y.
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