Tundish Nozzle

Tundish nozzle is a refractory component used in the continuous casting process of steelmaking. Located at the bottom of the tundish, it controls the flow of molten steel into the mold. Typically made from materials such as alumina, zirconia, and graphite, it offers high-temperature resistance and chemical corrosion resistance while enabling precise regulation of the steel flow. Its design aims to minimize clogging and erosion, ensuring steel quality and improving production efficiency.

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Technical Data

Physical and Chemical Indicators of Nozzle Inner Core

Item	SX-1	SX-2	SX-3	SX-4	SX-5	SX-6	SX-7	SX-8
ZrO2+(Hf)O2%	≥70	≥75	≥80	≥85	≥90	≥93	≥93	≥93
Bulk Density g/cm³	≥3.8	≥4.0	≥4.2	≥4.4	≥4.6	≥4.9	≥5.1	≥5.2
Apparent Porosity %	≤22	≤22	≤20	≤20	≤20	≤15	≤13	≤10
Mpa Compressive Strength	≥80	≥80	≥80	≥80	≥80	≥90	≥90	≥100
Thermal Shock Resistance(1100℃ cold water)	>5	>5	>5	>5	>5	>5	>5	>5

Physical and Chemical Indicators of External Body

Item	W-A1	W-A2	W-AC3	W-AC4
Al2O3(%)	≥70	≥75	≥80	≥85
C(%)	≥3.8	≥4.0	≥4.2	≥4.4
Bulk Density g/cm3	≤22	≤22	≤20	≤20
Apparent Porosity %	≥80	≥80	≥80	≥80
Mpa Compressive Strength	>5	>5	>5	>5