Tundish Refractory Materials
Alumina Carbon Tundish Nozzle for Improved Steel Quality
The alumina carbon tundish nozzle is a crucial component in the continuous casting of steel. It is responsible for controlling the flow of molten steel from the tundish to the mold, and ensuring th...
DESCRIPTION
The alumina carbon tundish nozzle is a crucial component in the continuous casting of steel. It is responsible for controlling the flow of molten steel from the tundish to the mold, and ensuring that the steel is of the highest quality possible.
The use of alumina carbon tundish nozzles has become increasingly popular in recent years due to their superior performance compared to other types of nozzles. The alumina lining in the nozzle provides excellent resistance to thermal shock, erosion, and chemical attack, while the carbon content helps to regulate the flow of steel and minimize turbulence.
By using an alumina carbon tundish nozzle, steel manufacturers can achieve a more consistent and reliable flow of molten steel into the mold, resulting in improved steel quality. This is because the nozzle’s design helps to prevent the entry of slag, which can cause defects in the steel, as well as improve the overall cleanliness of the steel.
In addition to improved steel quality, the use of alumina carbon tundish nozzles can also lead to increased productivity and reduced costs for steel manufacturers. This is because the superior performance of the nozzles means that they need to be replaced less frequently, reducing maintenance downtime and costs.
| Items | Upper Nozzle | Lower Nozzle | Well Block | ||
| Zirconia core | Outside | Zirconia core | Outside | ||
| ZrO2+HfO2(%) | ≥95 | ≥95 | |||
| Al2O3(%) | ≥85 | ≥85 | ≥85 | ||
| MgO(%) | ≥10 | ||||
| C(%) | ≥3 | ≥3 | ≥12 | ||
| Buik Density g/cm³ | ≥5.2 | ≥2.6 | ≥5.1 | ≥2.6 | ≥2.6 |
| Apparent porosity % | ≤10 | ≤20 | ≤13 | ≤20 | ≤21 |
| Crushing strength Mpa | ≥100 | ≥45 | ≥100 | ≥45 | ≥45 |
| Thermal shock resistance | ≥5 | ≥5 | ≥5 | ≥5 | |
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