B22D11/115

METHOD AND DEVICE FOR PRODUCING FOUNDRY INGOTS FROM METAL

The invention relates to a method for producing foundry ingots (1) from metal, in particular from steel, having a cross-sectional area of more than 0.1 m.sup.2, wherein liquid metal (2) is discharged into an ingot mold (15) open at the bottom either directly form a casting ladle (11) or via a tundish (12), and wherein, by a drawing piston (28), which is vertically movable in the direction of a longitudinal axis (5) of the foundry ingot (1) and on which the foundry ingot (1) is at least indirectly arranged, the at least partially solidified foundry ingot (1) is drawn from the ingot mold (15) in the direction of the longitudinal axis (5).

METHOD AND DEVICE FOR PRODUCING FOUNDRY INGOTS FROM METAL

The invention relates to a method for producing foundry ingots (1) from metal, in particular from steel, having a cross-sectional area of more than 0.1 m.sup.2, wherein liquid metal (2) is discharged into an ingot mold (15) open at the bottom either directly form a casting ladle (11) or via a tundish (12), and wherein, by a drawing piston (28), which is vertically movable in the direction of a longitudinal axis (5) of the foundry ingot (1) and on which the foundry ingot (1) is at least indirectly arranged, the at least partially solidified foundry ingot (1) is drawn from the ingot mold (15) in the direction of the longitudinal axis (5).

MOLTEN METAL STIRRING DEVICE AND CONTINUOUS CASTING DEVICE SYSTEM PROVIDED WITH SAME
20210001395 · 2021-01-07 · ·

In continuous casting, to provide products with excellent quality with high productivity. A molten metal from a melting furnace is stirred and driven by a Lorentz force due to crossing of magnetic lines of force from a magnet and direct current and sent to a mold while improving the quality of the molten metal, or a molten metal immediately before solidification in the mold by the Lorentz force to equalize the temperature of the molten metal immediately before solidification in the mold. As a result, finally a high quality product can be obtained, and the performance of the magnet can be maintained by cooling the magnet.

MOLTEN METAL STIRRING DEVICE AND CONTINUOUS CASTING DEVICE SYSTEM PROVIDED WITH SAME
20210001395 · 2021-01-07 · ·

In continuous casting, to provide products with excellent quality with high productivity. A molten metal from a melting furnace is stirred and driven by a Lorentz force due to crossing of magnetic lines of force from a magnet and direct current and sent to a mold while improving the quality of the molten metal, or a molten metal immediately before solidification in the mold by the Lorentz force to equalize the temperature of the molten metal immediately before solidification in the mold. As a result, finally a high quality product can be obtained, and the performance of the magnet can be maintained by cooling the magnet.

CONTINUOUS CASTING METHOD, CAST SLAB, AND CONTINUOUS CASTING APPARATUS

A continuous casting method includes, conveying a cast slab from a casting mold, stirring a non-solidified portion in the cast slab with a first electromagnetic stirring device, stirring the non-solidified portion with a second electromagnetic stirring device disposed downstream of the first electromagnetic stirring device in a conveyance direction of the cast slab, and subsequently, rolling the cast slab with a reduction roll, in which, the first electromagnetic stirring device alternately imparts the cast slab with electromagnetic force in one direction to cause the non-solidified portion to flow toward one width direction side of the cast slab at a flow rate of at least 5 cm/s, and with electromagnetic force in another direction to cause the non-solidified portion to flow toward another width direction side of the cast slab at a flow rate of at least 5 cm/s.

CONTINUOUS CASTING METHOD, CAST SLAB, AND CONTINUOUS CASTING APPARATUS

A continuous casting method includes, conveying a cast slab from a casting mold, stirring a non-solidified portion in the cast slab with a first electromagnetic stirring device, stirring the non-solidified portion with a second electromagnetic stirring device disposed downstream of the first electromagnetic stirring device in a conveyance direction of the cast slab, and subsequently, rolling the cast slab with a reduction roll, in which, the first electromagnetic stirring device alternately imparts the cast slab with electromagnetic force in one direction to cause the non-solidified portion to flow toward one width direction side of the cast slab at a flow rate of at least 5 cm/s, and with electromagnetic force in another direction to cause the non-solidified portion to flow toward another width direction side of the cast slab at a flow rate of at least 5 cm/s.

Molten metal stirring device and continuous casting device system provided with same
10814379 · 2020-10-27 ·

In continuous casting, to provide products with excellent quality with high productivity. A molten metal from a melting furnace is stirred and driven by a Lorentz force due to crossing of magnetic lines of force from a magnet and direct current and sent to a mold while improving the quality of the molten metal, or a molten metal immediately before solidification in the mold by the Lorentz force to equalize the temperature of the molten metal immediately before solidification in the mold. As a result, finally a high quality product can be obtained, and the performance of the magnet can be maintained by cooling the magnet.

Molten metal stirring device and continuous casting device system provided with same
10814379 · 2020-10-27 ·

In continuous casting, to provide products with excellent quality with high productivity. A molten metal from a melting furnace is stirred and driven by a Lorentz force due to crossing of magnetic lines of force from a magnet and direct current and sent to a mold while improving the quality of the molten metal, or a molten metal immediately before solidification in the mold by the Lorentz force to equalize the temperature of the molten metal immediately before solidification in the mold. As a result, finally a high quality product can be obtained, and the performance of the magnet can be maintained by cooling the magnet.

MOLDING FACILITY

A molding facility in continuous casting enabling the quality of the cast slab to be achieved stably even if improving the productivity, the molding facility provided with a mold for continuous casting use, a first water box and second water box storing cooling water for cooling the mold, an electromagnetic stirring device imparting to molten metal in the mold an electromagnetic force causing a swirling flow to be generated in a horizontal plane, and an electromagnetic brake device imparting to a discharge flow of molten metal to an inside of the mold from a submerged nozzle an electromagnetic force in a direction braking the discharge flow, the first water box, the electromagnetic stirring device, the electromagnetic brake device, and the second water box being placed in that order from above to below at an outside surface of a long side mold plate of the mold so as to fit between a top end and bottom end of the long side mold plate, a core height H1 of the electromagnetic stirring device and a core height H2 of the electromagnetic brake device satisfying 0.80H1/H22.33.

MOLDING FACILITY

A molding facility in continuous casting enabling the quality of the cast slab to be achieved stably even if improving the productivity, the molding facility provided with a mold for continuous casting use, a first water box and second water box storing cooling water for cooling the mold, an electromagnetic stirring device imparting to molten metal in the mold an electromagnetic force causing a swirling flow to be generated in a horizontal plane, and an electromagnetic brake device imparting to a discharge flow of molten metal to an inside of the mold from a submerged nozzle an electromagnetic force in a direction braking the discharge flow, the first water box, the electromagnetic stirring device, the electromagnetic brake device, and the second water box being placed in that order from above to below at an outside surface of a long side mold plate of the mold so as to fit between a top end and bottom end of the long side mold plate, a core height H1 of the electromagnetic stirring device and a core height H2 of the electromagnetic brake device satisfying 0.80H1/H22.33.