Molding device for continuous casting equipped with agitator

Abstract

There is provided a molding device for continuous casting equipped with an agitator that reduces the amount of generated heat, is easy to carry out maintenance, is inexpensive, and is easy to use in practice. The molding device for continuous casting equipped with an agitator of the invention receives liquid-phase melt of a conductive material, and a solid-phase cast product is taken out from the molding device through the cooling of the melt. The molding device includes a casting mold and an agitator provided so as to correspond to the casting mold. The casting mold includes a casting space that includes an inlet and an outlet at a central portion of a substantially cylindrical side wall, and a magnetic field generation device receiving chamber that is formed in the side wall and is positioned outside the casting space. The casting mold receives the liquid-phase melt from the inlet into the casting space and discharges the solid-phase cast product from the outlet through the cooling in the casting space. The agitator includes a magnetic field generation device having an electrode unit that includes first and second electrodes supplying current to at least the liquid-phase melt present in the casting space, and a permanent magnet that applies a magnetic field to the liquid-phase melt. The magnetic field generation device is received in the magnetic field generation device receiving chamber of the casting mold, generates magnetic lines of force toward a center in a lateral direction, makes the magnetic lines of force pass through a part of the side wall of the casting mold and reach the casting space, and applies lateral magnetic lines of force, which cross the current, to the melt.

1 . A molding device for continuous casting equipped with an agitator which receives liquid-phase melt of a conductive material and from which a solid-phase cast product is taken out through the cooling of the melt, the molding device comprising:
 a casting mold including a casting space that includes an inlet and an outlet at a central portion of a substantially cylindrical side wall and a magnetic field generation device receiving chamber that is formed in the side wall and is positioned outside the casting space, the casting mold receiving the liquid-phase melt from the inlet into the casting space and discharging the solid-phase cast product from the outlet through the cooling in the casting space; and   an agitator provided so as to correspond to the casting mold, the agitator including a magnetic field generation device having an electrode unit that includes first and second electrodes supplying current to at least the liquid-phase melt present in the casting space, and a permanent magnet that applies a magnetic field to the liquid-phase melt,   wherein the magnetic field generation device is received in the magnetic field generation device receiving chamber of the casting mold, generates magnetic lines of force toward a center in a lateral direction, makes the magnetic lines of force pass through a part of the side wall of the casting mold and reach the casting space, and applies lateral magnetic lines of force, which cross the current, to the melt.   
     
     
         2 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device receiving chamber is formed in a side wall of the casting mold at the outer peripheral position of the casting space.   
     
     
         3 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device receiving chamber includes an opening that is formed in the side wall of the casting mold so as to be opened downward.   
     
     
         4 . The molding device according to  claim 1 ,
 wherein a cooling unit is provided outside the casting mold.   
     
     
         5 . The molding device according to  claim 1 ,
 wherein the opening of the magnetic field generation device receiving chamber is closed by a lid, and the magnetic field generation device receiving chamber functions as a cooling chamber that allows the flow of cooling water.   
     
     
         6 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device is provided in the magnetic field generation device receiving chamber so that the position of the magnetic field generation device is adjustable in a vertical direction according to the position of an interface between liquid-phase melt and a solid-phase product present in the casting space.   
     
     
         7 . The molding device according to  claim 1 ,
 wherein discharge channels through which cooling water flowing in the magnetic field generation device receiving chamber is jetted to the product are formed in the casting mold.   
     
     
         8 . The molding device according to  claim 1 ,
 wherein the cross-section of the magnetic field generation device receiving chamber is formed in a frame shape so that the magnetic field generation device receiving chamber surrounds the entire periphery of the casting space.   
     
     
         9 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device receiving chamber is formed of a plurality of partial magnetic field generation device receiving chambers that are divided and independent, and each of the partial magnetic field generation device receiving chambers is formed so as to surround a part of the entire periphery of the casting space.   
     
     
         10 . The molding device according to  claim 8 ,
 wherein the cross-section of the magnetic field generation device is formed in a frame shape, the inner peripheral portion of the magnetic field generation device is magnetized to a first pole, and the outer peripheral portion of the magnetic field generation device is magnetized to a second pole.   
     
     
         11 . The molding device according to  claim 8 ,
 wherein the magnetic field generation device includes a support that has a frame-shaped cross-section and a plurality of permanent magnet pieces that are mounted on the inner surface of the support at a predetermined interval, and   inner and outer surfaces of each of the permanent magnet bodies are magnetized.   
     
     
         12 . The melting furnace system according to  claim 8 ,
 wherein the magnetic field generation device includes a plurality of permanent magnet pieces, and the plurality of permanent magnet pieces are received in the magnetic field generation device receiving chamber at a predetermined interval.   
     
     
         13 . The melting furnace system according to  claim 9 ,
 wherein the magnetic field generation device includes a plurality of permanent magnet pieces, and the plurality of permanent magnet pieces are received in the partial magnetic field generation device receiving chambers, respectively.   
     
     
         14 . The molding device according to  claim 1 ,
 wherein the first electrodes are provided so as to conduct electricity to the liquid-phase melt present in the casting mold, melt conducting electricity to the melt, or other components, and   the second electrode is provided so as to conduct electricity to a solid-phase product taken out from the casting mold and the product.   
     
     
         15 . The molding device according to  claim 1 ,
 wherein both the first and second electrodes are provided so as to conduct electricity to the liquid-phase melt present in the casting mold.   
     
     
         16 . The molding device according to  claim 1 ,
 wherein a power supply, which supplies direct current between the first and second electrodes, is connected to the first and second electrodes.   
     
     
         17 . The molding device according to  claim 1 ,
 wherein a power supply, which supplies alternate current between the first and second electrodes, is connected to the first and second electrodes.   
     
     
         18 . The molding device according to  claim 17 ,
 wherein the power supply has a function of changing frequency.   
     
     
         19 . The molding device according to  claim 1 ,
 wherein the casting mold has a single structure using a non-conductive material, a single structure using a conductive material, or a double structure using a non-conductive material and a conductive material.   
     
     
         20 . The molding device according to  claim 1 ,
 wherein the second electrode includes a roller at the end thereof, and the roller is rotated by coming into contact with the outer surface of the cast product to be taken out.