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Submerged Entry Nozzles (SEN) are critical refractory flow-control components used in continuous casting machines to transfer molten steel from the tundish into the mould under a protected environment. The nozzle remains submerged below the molten steel level inside the mould, preventing direct contact between molten steel and atmospheric oxygen while ensuring controlled steel flow into the casting process.
Manufactured from advanced refractory materials such as Alumina-Graphite, Zirconia-Graphite, Alumina-Zirconia-Carbon (AZC), and specialized anti-clogging compositions, SENs are engineered to withstand severe thermal shock, steel erosion, slag attack, and chemical wear. Their optimized internal geometry and port designs help regulate steel flow patterns, minimize turbulence, improve inclusion flotation, and enhance overall casting quality.