Stirrer

Abstract

A device for casting of metal. The device includes a mold, a casting tube via which molten metal is supplied to molten metal in the mold in a region at a distance below a meniscus of the molten metal, and at least one stirrer including an iron core and a coil arranged around the iron core. The iron core is arranged to be elongated along the broad side of the mold and adapted to apply a magnetic field to the molten metal for stirring the melted metal. An upper part of the iron core is positioned at a distance from the meniscus of from 50 mm above the surface of the meniscus to 195 mm below the surface. The length of the iron core in relation to the length of the broad side of the mold is between at least 50% and 80% of the length of the broad side.

1 . A device for continuous or semicontinuous casting of metal, comprising:
 a mold comprising two broad sides and two narrow sides, wherein a ratio of the broad sides to the narrow sides amounts to 2:1, through which a molten metal passes during a casting process,   a casting tube via which a molten metal is supplied to a molten metal already present in the mold in a region at a distance below a meniscus of the molten metal,   at least one stirrer comprising an iron core and a coil applied around, the iron core, wherein the iron core is arranged to be elongated along a broad side of the mold and a length of the iron core in relation to a length of the broad side of the mold is between 50% and 80% of the length of the broad side and is adapted to apply a magnetic field to the molten metal to stir said melt, and wherein the iron core is arranged such that an upper part of the iron core is positioned at a distance from the meniscus of from 50 mm above a surface of the meniscus to 195 mm below said surface of the meniscus.   
   
   
       2 . The device according to  claim 1 , wherein the iron core is arranged such that the upper part is positioned at a distance from the meniscus of from 50 mm above the surface of the meniscus to 150 mm below said surface of the meniscus. 
   
   
       3 . The device according to  claim 1 , wherein the iron core is arranged such that the upper part is positioned at a distance from the meniscus of from 50 mm above the surface of the meniscus to 100 mm below said surface of the meniscus. 
   
   
       4 . The device according to  claim 1 , wherein two stirrers are located symmetrically around a center line of the broad sides of the mold and on both sides of said broad sides. 
   
   
       5 . The device according  claim 1 , wherein two stirrers are located asymmetrically, on respective sides of the broad sides of the mold.