The present invention is related to a pouring tube assembly. The pouring tube assembly comprises a holding tank assembly capable of containing a molten metal. A pouring tube is in flow communication with the holding tank assembly wherein the pouring tube is capable of receiving the molten metal from the holding tank assembly and depositing molten metal in a mold above the pouring tube. A sleeve is removably disposed between the pouring tube and a portion of the holding casting wherein the sleeve comprises mating sleeve portions with symmetrically disposed protrusions and recesses.

A submerged entry nozzle for a continuous casting process includes a pair of triangular shaped ports that narrow from a top portion to a bottom portion of the ports. These triangular shaped ports may improve fluid flow at the discharge of the ports by increasing the velocity of the liquid steel exiting the nozzle and into the mold.

A submerged entry nozzle for a continuous casting process includes a pair of triangular shaped ports that narrow from a top portion to a bottom portion of the ports. These triangular shaped ports may improve fluid flow at the discharge of the ports by increasing the velocity of the liquid steel exiting the nozzle and into the mold.

A gate for metallurgic vessels is provided with a collector nozzle coupled to a bottom plate assembly of the gate. The bottom plate assembly allows a collector nozzle to be coupled to a bottom gate plate without need of a separate bayonet ring. A bayonet ring is integrated to the bottom plate assembly, allowing a collector nozzle to be mounted by a single robot, or by a single operator more easily than existing systems.

A gate for metallurgic vessels is provided with a collector nozzle coupled to a bottom plate assembly of the gate. The bottom plate assembly allows a collector nozzle to be coupled to a bottom gate plate without need of a separate bayonet ring. A bayonet ring is integrated to the bottom plate assembly, allowing a collector nozzle to be mounted by a single robot, or by a single operator more easily than existing systems.

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.

A flat immersion nozzle stabilizes the discharging flow of molten steel thereby stabilizing the molten steel surface in a mold, namely, decreasing the fluctuation thereof. In the immersion nozzle having a flat shape in which a width Wn of an inner hole is greater than a thickness Tn of the inner hole, a central protrusion portion (1) is disposed in a center section of a wall surface in a width direction of a flat section. Wp/Wn, a ratio of a length Wp of the central protrusion portion in the width direction to Wn, is 0.2 or more and 0.7 or less. The central protrusion portion (1) is disposed symmetrically as a pair; and a total length Tp in the thickness direction of the pair of the central protrusion portions is 0.15 or more and 0.75 or less of Tn.

A nozzle structure for discharging molten steel with improved sealing performance. The nozzle structure comprises: a molten steel discharge path having an inner bore; and one or more joints through which the molten steel discharge path is divided at one or more positions in a orthogonal direction with respect to an upward-downward direction of discharge of molten steel, and which join the molten steel discharge path. An inner bore sleeve is formed of a refractory material, and provided on an inner bore surface of the nozzle structure to extend in the upward-downward direction across at least one of the joints.

A nozzle structure for discharging molten steel with improved sealing performance. The nozzle structure comprises: a molten steel discharge path having an inner bore; and one or more joints through which the molten steel discharge path is divided at one or more positions in a orthogonal direction with respect to an upward-downward direction of discharge of molten steel, and which join the molten steel discharge path. An inner bore sleeve is formed of a refractory material, and provided on an inner bore surface of the nozzle structure to extend in the upward-downward direction across at least one of the joints.

A system for determining a set temperature of molten metal in a pouring facility includes a temperature sensor configured to detect a molten metal temperature at a nozzle tip of a ladle during pouring processing, and a control unit configured to acquire temperature transition obtained by plotting the molten metal temperature for each mold in each of the pouring processing, wherein the control unit determines the upper limit temperature to cause a percentage of the number of optimum temperature transitions included in a plurality of acquired temperature transitions in the number of the plurality of acquired temperature transitions to become a predetermined percentage, and determines a temperature obtained by adding a drop temperature that is a temperature dropped during conveyance processing and the determined upper limit temperature, as the set temperature.