Method for regulating the flow of an electrically conductive fluid, especially of a molten bath of metal in continuous casting, and an apparatus for performing the method
AssigneeConcast Standard AG
InventorsHans Gloor, Eduard Muller
Life of this patent
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Abstract
In a method for electromagnetically regulating flow and in an apparatus for performing the method, a molten metal flowing in a pouring tube is inhibited in a central region of the pouring tube by an insert member installed in a conduit of the pouring tube and is diverted radially outward. An electromagnetic coil is arranged concentrically about the pouring tube for exerting constrictive electromagnetic forces upon the molten metal and thus regulating the flow of molten metal in a wide range.
Claims19
A method for regulating the flow of an electrically conductive liquid, especially molten metal in continuous casting, comprising the steps of:
- mechanically inhibiting by means of a refractory insert member installed within a pouring tube the flow of molten metal in the center of a conduit of said pouring tube, wherein at least an outer side of said refractory insert member forms with said pouring tube a substantially annular space, and within an electromagnetically effective length of an electromagnetic field generated by an electromagnetic coil arranged around said pouring tube, said electromagnetically effective length of the electromagnetic field generated by the electromagnetic coil being arranged around the pouring tube at least above the entry side of said annular space;
- and
- allowing annularly constrictive electromagnetic forces capable of radially influencing the flow of molten metal and generated by said electromagnetic field to act upon the molten metal for regulating the flow thereof, said electromagnetic field constricting said electrically conductive liquid to flow substantially radially during a portion of its path above the entry side of said annular space and within said electromagnetically effective length.
A method for regulating the flow of an electrically conductive liquid, especially molten metal in continuous casting, comprising the steps of:
- mechanically inhibiting by means of a refractory insert member installed within a pouring tube the flow of molten metal in the center of a conduit of said pouring tube and within an electromagnetically effective length of an electromagnetic field generated by an electromagnetic coil arranged around said pouring tube;
- allowing annularly constrictive electromagnetic forces capable of radially influencing the flow of molten metal and generated by said electromagnetic field to act upon the molten metal for regulating the flow thereof;
- deflecting the flow of molten metal before entry into an annular space arranged within said electromagnetically effective length of said electromagnetic field generated by said electromagnetic coil;
- and
- transporting the flow of molten metal in an upward flow direction.
An apparatus for regulating the flow of an electrically conductive liquid, comprising:
- a pouring tube having a conduit;
- said conduit having a central region;
- an electromagnetic coil having an electromagnetically effective length arranged concentrically about said pouring tube for generating an electromagnetic field such that said electromagnetic field interacts with said electrically conductive liquid for producing electromagnetic forces acting substantially radially within said pouring tube and within said electromagnetically effective length;
- a refractory insert member mounted in said conduit within said electromagnetically effective length;
- said refractory insert member having an upper portion and an outer side and partially obstructing said central region of said conduit of said pouring tube during flow of the electrically conductive liquid at least with said upper portion within said electromagnetically effective length such that said outer side of said upper portion defines a substantially annular space within said pouring tube;
- and
- said electrically conductive liquid regulated by said electromagnetic forces with said electrically conducting liquid flowing substantially radially into said annular space and then through said annular space and on said outer side of said refractory insert member.
Dependencies are inferred from the claim text.