Techniques are disclosed for reducing macrosegregation in cast metals. Techniques include providing an eductor nozzle capable of increasing mixing in the fluid region of an ingot being cast. Techniques also include providing a non-contacting flow control device to mix and/or apply pressure to the molten metal that is being introduced to the mold cavity. The non-contacting flow control device can be permanent magnet or electromagnet based. Techniques additionally can include actively cooling and mixing the molten metal before introducing the molten metal to the mold cavity.

Techniques are disclosed for reducing macrosegregation in cast metals. Techniques include providing an eductor nozzle capable of increasing mixing in the fluid region of an ingot being cast. Techniques also include providing a non-contacting flow control device to mix and/or apply pressure to the molten metal that is being introduced to the mold cavity. The non-contacting flow control device can be permanent magnet or electromagnet based. Techniques additionally can include actively cooling and mixing the molten metal before introducing the molten metal to the mold cavity.

An electromagnetic brake system for a metal-making process. The electromagnetic brake system includes a two-level magnetic structure, in particular an upper magnetic core structure configured to be mounted to an upper portion of a mold and a lower magnetic core structure configured to be mounted to a lower portion of a mold. Lateral coils on the upper magnetic structure are configured to be controlled to generate a first magnetic field in a first field direction and inner coils are configured to be controlled to generate a second magnetic field in a second field direction, simultaneously with the first magnetic field. The lower magnetic core structure has lower coils which are configured to be controlled to generate a third magnetic field in the first direction simultaneously as the lateral coils and the inner coils generate their fields.

A method detects a level of a melt contained by an oscillating mold. The method includes a) sensing radiation interacted with the melt and generating from the sensed radiation radiation signals, such that the generated radiation signals are varied by the mold oscillation, b) determining a radiation signal variation of the generated radiation signals, c) determining an oscillation deflection variation of the oscillating mold, and d) determining from the determined oscillation deflection variation and the determined radiation signal variation, the level of the melt.

Method for the continuous casting of a product (P) along a curved casting line (18), provided with a crystallizer (11) having a tubular cavity (12) with a polygonal cross section defined by a determinate number of sides (n). The product (P) exiting from the crystallizer (11) is curved along the casting line (18) by support and curving rollers (19) and without the aid of lateral containing sectors of the cross section of the product (P).

Method for the continuous casting of a product (P) along a curved casting line (18), provided with a crystallizer (11) having a tubular cavity (12) with a polygonal cross section defined by a determinate number of sides (n). The product (P) exiting from the crystallizer (11) is curved along the casting line (18) by support and curving rollers (19) and without the aid of lateral containing sectors of the cross section of the product (P).

A continuous casting method includes discharging a molten steel from discharge ports of a submerged nozzle under conditions (A) and (B); and performing electro-magnetic stirrer (EMS) to cause flows in directions inverse to each other in the long edge direction on both long edge sides in the molten steel in a region having a depth providing a thickness of a solidification shell of from 5 to 10 mm at least at a center position in the long edge direction. (A) a discharge extended line from the discharge port of the submerged nozzle intersects a molten steel surface in the mold at a point P, and the position of the point P satisfies 0.15M/W0.45; and (B) a condition satisfying 0L0.17Vi350, wherein the unit for L is mm, and Vi represents a discharge velocity (mm/s) of the molten steel at the outlet opening.

Methods and apparatus for continuously casting thin strip where one or more expansion rings are positioned within at least one of a pair of casting rolls, and automatically measuring a thickness of the cast strip close to the first side edge of the strip using at least one sensor, and if the thickness measured is too thin, automatically decreasing the radial dimension of the expansion ring arranged in close proximity to the first side edge to cause the cylindrical tube to contract and increase the thickness of the cast strip during casting, and if the thickness measured indicates that the thickness of the cast strip is too thick, automatically increasing the radial dimension of the expansion ring arranged in close proximity to the first side edge to cause the cylindrical tube to expand and reduce the thickness of the cast strip during casting.

Provided is a meniscus flow control device that includes: a meniscus flow detection unit for detecting, in a meniscus flow form of molten steel, relative temperature values for positions measured by temperature measurers, and relatively comparing the temperature values measured by the temperature measurers to thereby determine the flow state of the molten steel meniscus to be normal or abnormal; a magnetic field generation unit, installed outside a mold, for generating a magnetic field and controlling the flow of the molten steel by the magnetic field; and a flow control unit for maintaining the operation of the magnetic field generation unit in the current state when the meniscus flow state detected by the meniscus flow detection unit is determined to be normal, and for controlling the magnetic field generation unit to adjust the meniscus flow to be normal when the detected meniscus flow state is determined to be abnormal.

Provided is a meniscus flow control device that includes: a meniscus flow detection unit for detecting, in a meniscus flow form of molten steel, relative temperature values for positions measured by temperature measurers, and relatively comparing the temperature values measured by the temperature measurers to thereby determine the flow state of the molten steel meniscus to be normal or abnormal; a magnetic field generation unit, installed outside a mold, for generating a magnetic field and controlling the flow of the molten steel by the magnetic field; and a flow control unit for maintaining the operation of the magnetic field generation unit in the current state when the meniscus flow state detected by the meniscus flow detection unit is determined to be normal, and for controlling the magnetic field generation unit to adjust the meniscus flow to be normal when the detected meniscus flow state is determined to be abnormal.