Ladle Refractory Materials
Refractory Tundish Lower Upper Nozzle
The refractory tundish lower upper nozzle is an important component in the steelmaking process. It serves as a channel for the flow of molten steel from the tundish to the mold during the continuou...
DESCRIPTION
The refractory tundish lower upper nozzle is an important component in the steelmaking process. It serves as a channel for the flow of molten steel from the tundish to the mold during the continuous casting process.
The refractory material used in the tundish lower upper nozzle should be able to withstand high temperatures, thermal shock, and chemical attack from the molten steel. The nozzle should also be designed to minimize erosion and wear to ensure a long lifespan.
Customization options for the refractory tundish lower upper nozzle can further optimize the steelmaking process. For example, the size and shape of the nozzle orifice can be customized to control the flow of molten steel and ensure a consistent and uniform flow. Additionally, the angle of the nozzle can be adjusted to optimize the flow pattern for a particular casting process.
The use of advanced technologies in refractory tundish lower upper nozzle design can also improve the efficiency and quality of the steelmaking process. For example, the use of computer-controlled flow rates and sensors can help optimize the flow of molten steel, reducing turbulence and improving product quality. Other advanced features, such as automated cleaning and maintenance systems, can minimize downtime and increase production efficiency.
| Items | Upper Nozzle | Lower Nozzle | ||
| Zirconia core | Outside | Zirconia core | Outside | |
| ZrO2+HfO2(%) | ≥95 | ≥95 | ||
| Al2O3(%) | ≥85 | ≥85 | ||
| MgO(%) | ||||
| C(%) | ≥3 | ≥3 | ||
| Buik Density g/cm³ | ≥5.2 | ≥2.6 | ≥5.1 | ≥2.6 |
| Apparent porosity % | ≤10 | ≤20 | ≤13 | ≤20 |
| Crushing strength Mpa | ≥100 | ≥45 | ≥100 | ≥45 |
| Thermal shock resistance | ≥5 | ≥5 | ≥5 | ≥5 |
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