Patent classifications
B22D11/20
Method and casting/rolling system for casting and rolling a continuous strand material
A method for operating a casting/rolling system and to a corresponding system for casting and rolling an endless strand material. The casting/rolling system comprises a strand casting machine and a rolling train arranged downstream of the strand casting machine. The method has the following step: controlling the drive for the rollers of the first roller frame of the rolling train by means of a drive control in response to a target value specification of the pass sequence model. Furthermore, the drive of the at least one strand guiding roller is controlled by a strand guiding roller drive control in response to a target value specification of the strand casting machine drive model.
Bearing block for holding a bearing for a roller
A bearing block for holding a bearing for a roller, in particular a strand-guiding roller in a strandguiding device. The bearing block is designed as a solid casting having an integrated internal coolant channel. The coolant channel has an inlet and an outlet for coolant. In order to enable an improvement in the product quality of the cast slabs, the bearing block has a rotational speed sensor for sensing the rotational speed of the roller.
Electromagnetic brake system and method of controlling an electromagnetic brake system
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.
BEARING BLOCK FOR HOLDING A BEARING FOR A ROLLER
A bearing block for holding a bearing for a roller, in particular a strand-guiding roller in a strandguiding device. The bearing block is designed as a solid casting having an integrated internal coolant channel. The coolant channel has an inlet and an outlet for coolant. In order to enable an improvement in the product quality of the cast slabs, the bearing block has a rotational speed sensor for sensing the rotational speed of the roller.
Continuous casting method
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.
Continuous casting method
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.
CONTINUOUS CASTING LINE HAVING INDIVIDUAL ROLLER ENGAGEMENT
A continuous casting line, which has a mold for the output of a strand and a strand guide connected to the mold having a plurality of rollers arranged in pairs for transporting the strand in a conveying direction. One or more of the rollers can be engaged so that a thickness reduction of the strand occurs in the strand guide.
Electromagnetic Brake System And Method Of Controlling An Electromagnetic Brake System
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.
Metal level overshoot or undershoot mitigation at transition of flow rate demand
Automated processes and systems dynamically control the delivery rate of molten metal to a mold during a casting process. Such automated processes and systems can include automatically controlling a flow control device (such as a control pin) during a first phase of casting to modulate molten metal flow or flow rate, moving the flow control device in a transition time between the first phase and a second phase toward a substitute flow control device position determined based on a difference between a first projected flow rate of the first phase and a second projected flow rate of the second phase, and resuming automatic control of the flow control device during the second phase based on the detected metal level and the metal level setpoint. Overshoot and/or undershoot can additionally or alternatively be mitigated by translating the mold or altering the cast speed.
Electroslag remelting process and melting vessel
A melting vessel for performing an electro-slag melting method and such a method are presented. Measuring devices measuring a temperature at different heights allow conclusions about position and height of a slag zone in the melting vessel during the method.