Stirrer

Abstract

A method for casting of metal. A mold is provided including two broad sides and two narrow sides. A molten metal is introduced into the mold. There is a meniscus at a top of the molten metal. Additional molten metal is supplied into the molten metal via a casting tube below the meniscus. At least one stirrer including an iron core and a coil applied around the iron core is arranged around the mold. 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. An upper part of the iron core is positioned from 50 mm above to 195 mm below the surface of the meniscus. A magnetic field is applied to the molten metal with the at least one stirrer to stir the molten metal.

1 - 5 . (canceled) 
     
     
         6 . A method for continuous or semicontinuous casting of metal, the method comprising:
 providing a mold comprising two broad sides and two narrow sides through which a molten metal passes during a casting process;   introducing a molten metal into the mold, such that the molten metal has a meniscus at a top of the molten metal;   supplying additional molten metal into the molten metal already present in the mold via a casting tube, wherein the additional molten metal is introduced into the molten metal already present in the mold in a region at a distance below the meniscus of the molten metal;   arranging around the mold at least one stirrer comprising an iron core and a coil applied around the iron core, such that 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, wherein the iron core is arranged such that an upper part of the iron core is positioned at a distance from the meniscus from 50 mm above a surface of the meniscus to 195 mm below said surface of the meniscus; and   applying with the at least one stirrer a magnetic field to the molten metal to stir said molten metal.   
     
     
         7 . The method according to  claim 6 , wherein the iron core is arranged such that the upper part is positioned at a distance from the meniscus from 50 mm above the surface of the meniscus to 150 mm below said surface of the meniscus. 
     
     
         8 . The method according to  claim 6 , wherein the iron core is arranged such that the upper part is positioned at a distance from the meniscus from 50 mm above the surface of the meniscus to 100 mm below said surface of the meniscus. 
     
     
         9 . The method according to  claim 6 , 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. 
     
     
         10 . The method according  claim 6 , wherein two stirrers are located asymmetrically, on respective sides of the broad sides of the mold.