An apparatus for continuous casting of molten material includes an elongate tube of electrically conductive material having an inner and an outer wall defining a molding cavity therein, the inner and outer walls having a first end having an inlet for receiving the molten material and a second end having an outlet for removing a solidifying billet formed from the molten material; an electrical coil with inner and outer surfaces, the electrical coil arranged to surround the outer wall of the elongate tube; and an annular channel defined by the outer wall of the elongate tube and the inner surface of the electrical coil. When pulsating current passes through the electrical coil, a counter current is induced in the elongate mold causing a repelling force between the electrical coil and the elongate mold, thereby causing inward radial flexure of the elongate mold.

An apparatus for continuous casting of molten material includes an elongate tube of electrically conductive material having an inner and an outer wall defining a molding cavity therein, the inner and outer walls having a first end having an inlet for receiving the molten material and a second end having an outlet for removing a solidifying billet formed from the molten material; an electrical coil with inner and outer surfaces, the electrical coil arranged to surround the outer wall of the elongate tube; and an annular channel defined by the outer wall of the elongate tube and the inner surface of the electrical coil. When pulsating current passes through the electrical coil, a counter current is induced in the elongate mold causing a repelling force between the electrical coil and the elongate mold, thereby causing inward radial flexure of the elongate mold.

A semi-continuous casting equipment for thin-walled alloy castings with equal outer diameter, optimized by synergistic action of traveling magnetic fields and ultrasonic wave, includes: a melting and insulation device, a heat insulation panel, a traveling magnetic field generator and a water-cooled crystallizer sequentially positioned on a working platform; an outer mold positioned on the water-cooled crystallizer and sleeved the traveling magnetic field generator; a mold core inside the outer mold defining a casting cavity; a bottom plate below the mold core capable of sliding against and along an inner side of the outer mold; two position control units supported by the working platform; an ultrasonic limit baffle moveably engaged with the position control units; an ultrasonic wave generator affixed on the ultrasonic limit baffle and extended to the casting cavity; a motion system controlling up and down movement of the bottom plate and the position control units through a gear transmission mechanism.

A semi-continuous casting equipment for thin-walled alloy castings with equal outer diameter, optimized by synergistic action of traveling magnetic fields and ultrasonic wave, includes: a melting and insulation device, a heat insulation panel, a traveling magnetic field generator and a water-cooled crystallizer sequentially positioned on a working platform; an outer mold positioned on the water-cooled crystallizer and sleeved the traveling magnetic field generator; a mold core inside the outer mold defining a casting cavity; a bottom plate below the mold core capable of sliding against and along an inner side of the outer mold; two position control units supported by the working platform; an ultrasonic limit baffle moveably engaged with the position control units; an ultrasonic wave generator affixed on the ultrasonic limit baffle and extended to the casting cavity; a motion system controlling up and down movement of the bottom plate and the position control units through a gear transmission mechanism.

By setting an electric resistance of a trough to a value larger than an electric resistance of a molten metal stored in a storage space, in a non-driving state, a current is caused to flow along a first current path from one side wall of the pair of side walls to another side wall through the bottom wall, and in a driving state, a current is caused to flow through a second current path from the one side wall through a middle part of the first current path and bypass to the molten metal, and return to the first current path, and in the driving state, in the molten metal, causing the magnetic force lines running vertically and the current running horizontally to cross each other to generate a Lorentz force, and by the Lorentz force, driving and carrying the molten metal in the trough.

By setting an electric resistance of a trough to a value larger than an electric resistance of a molten metal stored in a storage space, in a non-driving state, a current is caused to flow along a first current path from one side wall of the pair of side walls to another side wall through the bottom wall, and in a driving state, a current is caused to flow through a second current path from the one side wall through a middle part of the first current path and bypass to the molten metal, and return to the first current path, and in the driving state, in the molten metal, causing the magnetic force lines running vertically and the current running horizontally to cross each other to generate a Lorentz force, and by the Lorentz force, driving and carrying the molten metal in the trough.

The device for controlling a flow in a mold in thin-slab casting of steel has a thickness on the short side of the meniscus portion of 150 mm or less and a casting width of 2 m or less and includes a DC magnetic field generation unit and an immersion nozzle having a slit formed at the bottom so that the slit leads to the bottom of the discharge hole and opens outside, the discharge hole and the slit are present in the DC magnetic field zone, and the magnetic flux density B (T) in the DC magnetic field zone and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy Formulae (1) and (2) described below:

0.35TB1.0TFormula (1)

L0.06 mFormula (2)

The device for controlling a flow in a mold in thin-slab casting of steel has a thickness on the short side of the meniscus portion of 150 mm or less and a casting width of 2 m or less and includes a DC magnetic field generation unit and an immersion nozzle having a slit formed at the bottom so that the slit leads to the bottom of the discharge hole and opens outside, the discharge hole and the slit are present in the DC magnetic field zone, and the magnetic flux density B (T) in the DC magnetic field zone and the distance L (m) from the lower end of the immersion nozzle to the lower end of the core satisfy Formulae (1) and (2) described below:

0.35TB1.0TFormula (1)

L0.06 mFormula (2)

This mold equipment is mold equipment provided with a mold, an electromagnetic brake device, and a control device. An immersion nozzle is provided with a pair of discharge holes of molten metal, the electromagnetic brake device is provided with an iron core including a pair of teeth and coils wound around the respective teeth, the coils on one side are connected in series in a first circuit, the coils on the other side are connected in series in a second circuit, and the control device is able to independently control voltage and current applied to each of the first and second circuits for each circuit, detects a drift of a discharge flow between the pair of discharge holes on the basis of the voltage applied to the coils in the first circuit and the voltage applied to the coils in the second circuit, and controls the current flowing through the first circuit and the current flowing through the second circuit on the basis of a detection result.

This mold equipment is mold equipment provided with a mold, an electromagnetic brake device, and a control device. An immersion nozzle is provided with a pair of discharge holes of molten metal, the electromagnetic brake device is provided with an iron core including a pair of teeth and coils wound around the respective teeth, the coils on one side are connected in series in a first circuit, the coils on the other side are connected in series in a second circuit, and the control device is able to independently control voltage and current applied to each of the first and second circuits for each circuit, detects a drift of a discharge flow between the pair of discharge holes on the basis of the voltage applied to the coils in the first circuit and the voltage applied to the coils in the second circuit, and controls the current flowing through the first circuit and the current flowing through the second circuit on the basis of a detection result.