Continuous casting device

A continuous casting device, comprising:

• a pair of cooling rolls positioned adjacent to each other for rotation in opposite directions, each of said cooling rolls having an axial direction, a peripheral surface and an end surface;
• a pair of side weirs, said pair of side weirs comprising a first side weir extending around said peripheral surface of one of said cooling rolls and a second side weir that has a position selected from the group consisting of a first position in which said second side weir covers said end surface of the other of said cooling rolls and a second position in which said second side weir extends around said peripheral surface of the other of said cooling rolls, wherein at least one of said cooling rolls and at least one of said side weirs are movable in the axial direction of said cooling rolls, and wherein said side weirs have portions that extend along said peripheral surfaces of said cooling rolls and molten metal contact surfaces;
• and
• electric conductors located proximate to said portions of said side weirs that extend along said peripheral surfaces of said cooling rolls for forming a magnetic flux in a direction parallel to said molten metal contact surfaces of said side weirs and along said peripheral surfaces of said cooling rolls, wherein said electric conductors are classified into groups in which a current direction in said electric conductors are identical with each other, and wherein a circuit is formed such that one of said electric conductors of each of said groups has a reverse current flow from another of said electric conductors of each of said groups, and such that said electric conductors that are closest to said molten metal contact surfaces of said side weirs have a current flow in the same direction;
• and
• a ferromagnetic substance provided between said electric conductors of each of said groups.

A continuous casting device, comprising:

• a pair of cooling rolls positioned adjacent to each other for rotation in opposite directions, each of said cooling rolls having an axial direction, a peripheral surface and an end surface;
• one side weir that covers the end surface of one of said cooling rolls, and another side weir that covers the end surface of the other of said cooling rolls, said side weirs having portions disposed along the peripheral surface of each of said cooling rolls and molten metal contact surfaces;
• electric conductors located proximate to said portions of said side weirs that extend along said peripheral surfaces of said cooling rolls for forming a magnetic flux in a direction parallel to said molten metal contact surfaces of said side weirs and along said peripheral surfaces of said cooling rolls, wherein said electric conductors are classified into groups in which a current direction in said electric conductors are identical with each other, and wherein a circuit is formed such that one of said electric conductors of each of said groups has a reverse current flow from another of said electric conductors of each of said groups, and such that said electric conductors that are closest to said molten metal contact surfaces of said side weirs have a current flow in the same direction;
• and
• a ferromagnetic substance provided between said electric conductors of each of said groups.

A continuous casting device, comprising:

• a pair of cooling rolls adapted to rotate, said cooling rolls having end surfaces and peripheral surfaces;
• side weirs positioned at said end surfaces of said cooling rolls, said side weirs defining a molten metal casting space together with said cooling rolls for receiving poured molten metal and continuously manufacturing a cast piece;
• an electric conductor forming a V-shape as a whole along the peripheral surfaces of said cooling rolls on each of said side weirs for electromagnetic sealing along junctions between said side weirs and said cooling rolls by exerting a magnetic flux on the molten metal during casting, said electric conductor being connected to an a.c. power supply;
• wherein said electric conductor forming the V-shape has a right side and a left side of the V-shape, and wherein the right and left sides of the V-shape of said electric conductor, at positions facing said molten metal casting space, are arranged to have current flowing in the same direction.