An exemplary embodiment of the invention provides a method of preparing a reinforced refractory joint between refractory sections of a vessel used for containing or conveying molten metal, e.g. a metal-contacting trough. The method involves introducing a mesh body made of metal wires into a gap between metal-contacting surfaces of adjacent refractory sections of a vessel so that the mesh body is positioned beneath the metal conveying surfaces, and covering the mesh body with a layer of moldable refractory material to seal the gap between the metal-contacting surfaces. Other embodiments relate to a vessel formed by the method and a vessel section with a pre-positioned mesh body suitable for preparing a sealed joint with other such sections.

An exemplary embodiment of the invention provides a method of preparing a reinforced refractory joint between refractory sections of a vessel used for containing or conveying molten metal, e.g. a metal-contacting trough. The method involves introducing a mesh body made of metal wires into a gap between metal-contacting surfaces of adjacent refractory sections of a vessel so that the mesh body is positioned beneath the metal conveying surfaces, and covering the mesh body with a layer of moldable refractory material to seal the gap between the metal-contacting surfaces. Other embodiments relate to a vessel formed by the method and a vessel section with a pre-positioned mesh body suitable for preparing a sealed joint with other such sections.

A tundish, in particular a tundish for continuous steel casting for placement between a steel casting ladle and a continuous casting mold, with an inlet region and an outlet region, wherein in the inlet region, molten steel can be supplied in particular through a ladle shroud and in the outlet region, the molten steel can be drained from the tundish in particular by means of a plug and an outlet opening; in the vicinity of the inlet region in the tundish, a threshold or ramp is provided, which forms a region of the tundish bottom into a cup or tundish; the threshold or ramp has at least one channel at the side, which locally reduces the height of the threshold or ramp or breaks through the threshold.

A tundish, in particular a tundish for continuous steel casting for placement between a steel casting ladle and a continuous casting mold, with an inlet region and an outlet region, wherein in the inlet region, molten steel can be supplied in particular through a ladle shroud and in the outlet region, the molten steel can be drained from the tundish in particular by means of a plug and an outlet opening; in the vicinity of the inlet region in the tundish, a threshold or ramp is provided, which forms a region of the tundish bottom into a cup or tundish; the threshold or ramp has at least one channel at the side, which locally reduces the height of the threshold or ramp or breaks through the threshold.

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.

[Problem]

To provide a method for producing a metal ingot, which makes it possible to inhibit impurities contained in molten metal in a hearth from being mixed into the ingot.

[Solution]

A method for producing a metal ingot by using an electron-beam melting furnace having an electron gun and a hearth that accumulates a molten metal of a metal raw material, wherein the metal raw material is supplied to the position on a supply line disposed along a second side wall of the hearth that accumulates the molten metal of the metal raw material. A first electron beam is radiated along a first irradiation line that is disposed along the supply line and is closer to a central part of the hearth relative to the supply line on the surface of the molten metal. By this means, a surface temperature (T2) of the molten metal at the first irradiation line is made higher than an average surface temperature (T0) of the entire surface of the molten metal in the hearth, and in an outer layer of the molten metal, a first molten metal flow is formed from the first irradiation line toward the supply line.

The present invention provides a system for the production of an iron component by continuous casting including a mold adapted to receive liquid metal through an inlet channel defined in the match mold, which is disposed at least partially within the mold.

A uniform distribution nozzle for a twin roll caster adapted to extend along and above a pair of casting rolls having an unitary body and with a top member arranged along the top side of the unitary body. The top member having a plurality of molten metal metering nozzles spaced apart along the length of the body for transferring molten metal from a tundish and/or transition piece into an interior cavity in the uniform distribution nozzle and below the top member. The molten metal is further transferred from the interior cavity of the uniform distribution nozzle into a casting pool at the casting rolls.

A uniform distribution nozzle for a twin roll caster adapted to extend along and above a pair of casting rolls having an unitary body and with a top member arranged along the top side of the unitary body. The top member having a plurality of molten metal metering nozzles spaced apart along the length of the body for transferring molten metal from a tundish and/or transition piece into an interior cavity in the uniform distribution nozzle and below the top member. The molten metal is further transferred from the interior cavity of the uniform distribution nozzle into a casting pool at the casting rolls.

Systems and methods are disclosed for using magnetic fields (e.g., changing magnetic fields) to control metal flow conditions during casting (e.g., casting of an ingot, billet, or slab). The magnetic fields can be introduced using rotating permanent magnets or electromagnets. The magnetic fields can be used to induce movement of the molten metal in a desired direction, such as in a rotating pattern around the surface of the molten sump. The magnetic fields can be used to induce metal flow conditions in the molten sump to increase homogeneity in the molten sump and resultant ingot.