Molding device for continuous casting equipped with agitator

Abstract

There is provided 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 includes a casting mold and an agitator. The casting mold receives the liquid-phase melt from an inlet side and discharges the solid-phase cast product from an outlet side by cooling. The agitator is provided outside the casting mold, and includes an electrode unit and a magnetic field generation device. The electrode unit includes first electrodes positioned at the top and a second electrode positioned therebelow, and the magnetic field generation device includes a permanent magnet for applying a magnetic field to the liquid-phase melt. The first electrodes are provided so as to conduct electricity to the liquid-phase melt, and the second electrode is provided so as to conduct electricity to the solid-phase cast product. The first and second electrodes are adapted so as to conduct electricity in the vertical direction through the melt and the cast product provided therebetween. The magnetic field generation device is provided outside the casting mold and generates magnetic lines of force in a lateral direction so that the magnetic lines of force penetrate into the casting mold, reach the inside of the casting mold, and are applied to the melt in the lateral direction crossing the current.

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 that receives the liquid-phase melt from an inlet side and discharges the solid-phase cast product from an outlet side by cooling; and   an agitator that is provided outside the casting mold, and includes an electrode unit that includes first electrodes positioned at the top and a second electrode positioned therebelow, and a magnetic field generation device that includes a permanent magnet for applying a magnetic field to the liquid-phase melt, the first electrodes being provided so as to conduct electricity to the liquid-phase melt, and the second electrode is provided so as to conduct electricity to the solid-phase cast product, the first and second electrodes being adapted so as to conduct electricity in the vertical direction through the melt and the cast product provided therebetween, and the magnetic field generation device being provided outside the casting mold and generating magnetic lines of force in a lateral direction so that the magnetic lines of force penetrate into the casting mold, reach the inside of the casting mold, and are applied to the melt in the lateral direction crossing the current.   
     
     
         2 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device includes at least one pair of magnetic poles that are formed of an S pole and an N pole, and sides, which are close to and distant from the casting mold, of each magnetic pole are magnetized as an inner magnetic pole and an outer magnetic pole, respectively.   
     
     
         3 . The molding device according to  claim 1 ,
 wherein the plurality of pairs of magnetic poles are arranged around a vertical axis and on the outer periphery of the casting mold.   
     
     
         4 . The molding device according to  claim 2 ,
 wherein the plurality of inner magnetic poles of the plurality of pairs of magnetic poles are S poles or N poles and the plurality of outer magnetic poles thereof are N poles or S poles.   
     
     
         5 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device is adapted so that the position of the magnetic field generation device is vertically adjustable relative to the casting mold.   
     
     
         6 . The molding device according to  claim 1 ,
 wherein the first electrodes are supported by the casting mold or means other than the casting mold.   
     
     
         7 . The molding device according to  claim 1 ,
 wherein the second electrode includes a roller at the end thereof, and the roller is adapted to be rotated through the contact with the outer surface of the cast product to be taken out.   
     
     
         8 . 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.   
     
     
         9 . The molding device according to  claim 1 ,
 wherein the casting mold is made of a non-conductive material so as to have a single structure, is made of a conductive material so as to have a single structure, or is made of a non-conductive material and a conductive material so as to have a double structure.   
     
     
         10 . The molding device according to  claim 6 ,
 wherein the casting mold is made of a non-conductive material so as to have a single structure, and the first electrodes are provided so as to be exposed to the inside of the casting mold through electrode insertion holes.   
     
     
         11 . The molding device according to  claim 6 ,
 wherein the casting mold is made of a conductive material so as to have a single structure, and the first electrodes are provided so as to conduct electricity to the casting mold through at least the electrode insertion holes.   
     
     
         12 . The molding device according to  claim 6 ,
 wherein the casting mold has a double structure of which an inner portion is made of a non-conductive material and an outer portion is made of a conductive material, and the first electrodes are provided so as to be exposed to the inside of the casting mold through electrode insertion holes.   
     
     
         13 . The molding device according to  claim 6 ,
 wherein the casting mold has a double structure of which an inner portion is made of a conductive material and an outer portion is made of a non-conductive material, and the first electrodes are provided so as to conduct electricity to the conductive material of the inner portion through at least the electrode insertion holes.   
     
     
         14 . The molding device according to  claim 1 ,
 wherein the magnetic field generation device is formed of an annular body.   
     
     
         15 . The molding device according to  claim 14 ,
 wherein one portion a plurality of portions of the annular body of the magnetic field generation device forms or form magnet pole or poles.   
     
     
         16 . The molding device according to  claim 14 ,
 wherein the magnetic field generation device includes a ring-shaped support and one permanent magnet body or a plurality of permanent magnet bodies fixed to the support.   
     
     
         17 . 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 that receives the liquid-phase melt from an inlet side and discharges the solid-phase cast product from an outlet side by cooling; and   an agitator that is provided outside the casting mold, and includes a magnetic field generation device that includes a permanent magnet for applying a magnetic field to the liquid-phase melt, and a lower electrode that conducts electricity to the solid-phase cast product, the lower electrode being adapted so as to receive current from the casting mold as an upper electrode through the melt and the cast product, and the magnetic field generation device being provided outside the casting mold and generating magnetic lines of force in a lateral direction so that the magnetic lines of force penetrate into the casting mold, reach the inside of the casting mold, and are applied to the melt in the lateral direction crossing the current.   
     
     
         18 . The molding device according to  claim 17 ,
 wherein the magnetic field generation device includes at least one pair of magnetic poles that are formed of an S pole and an N pole, and sides, which are close to and distant from the casting mold, of each magnetic pole are magnetized as an inner magnetic pole and an outer magnetic pole, respectively.   
     
     
         19 . The mold device according to  claim 17 ,
 wherein the casting mold includes an insulating layer portion, which does not allow the flow of the current from the casting mold, on a part of an inner surface thereof.   
     
     
         20 . The mold device according to  claim 19 ,
 wherein the insulating layer portion is formed on a lower portion of the inner surface.