초록 ▼

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 refini

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.

대표청구항 ▼

[ What is claimed is:] [1.] A method for controlling the temperature of the melt exiting a cold wall induction guide tube mechanism comprising the steps of:providing a cold wall induction guide tube mechanism including a neck having an exit orifice;operatively forming a skull of melt in the mechanis

[ What is claimed is:] [1.] A method for controlling the temperature of the melt exiting a cold wall induction guide tube mechanism comprising the steps of:providing a cold wall induction guide tube mechanism including a neck having an exit orifice;operatively forming a skull of melt in the mechanism;providing a reservoir of melt above the mechanism;providing a stream of melt exiting the exit orifice of the mechanism;selectively controlling the temperature of the stream of melt exiting the exit orifice by selectively heating at least one portion of the cold wall induction guide tube mechanism proximate the exit orifice of the mechanism, wherein the temperature of melt flowing from the exit orifice of the mechanism is selectively increased or decreased thereby controlling the temperature of the melt provided to an atomization zone;the selectively controlling the temperature of the stream of melt exiting the exit orifice by selectively heating at least one portion of the cold wall induction guide tube mechanism proximate the exit orifice of the mechanism further comprising controllingly power supplied to the at least one portion of the cold wall induction guide tube mechanism to selectively control the temperature of the stream of melt;forming a spray at the atomization zone;scanning the spray in a predetermined spray angle; andcoordinating the scanning the spray in a predetermined spray angle with the controllingly power, thereby providing the spray with a temperature gradient so spray at an outer portion is at a higher temperature that spray at an inner portion.