Submerged nozzle

Submerged nozzle

in the continuous casting technology, in order to improve the quality of the slab, an Submerged nozzle is provided between the tundish and the crystallizer. Its main function is to protect the molten steel from the tundish from being oxidized by ambient air when it flows into the crystallizer. Distribute the molten steel evenly into the crystallizer and control the effect of the molten steel flow in the crystallizer.

 

Index Body slag line
Al2O3 ≥45
C+SiC ≥22 ≥15
ZrO2 ≥70
Refractoriness ≥1700 ≥1700
Bulk Density(g/cm3): ≥2.50 ≥3.50
parent porosity(%) : ≤17 ≤18
Cold crushing strength(Mpa): ≥20
cold bending strength ≥5
Thermal Shock Resistance (1100℃) ≥5

 

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