Tundish Refractory Materials
Tundish Lower Nozzles for Improved Casting Efficiency
Tundish lower nozzles play a crucial role in improving casting efficiency in the steel industry. The tundish is a crucial component of the continuous casting process used to produce steel. It acts ...
DESCRIPTION
Tundish lower nozzles play a crucial role in improving casting efficiency in the steel industry. The tundish is a crucial component of the continuous casting process used to produce steel. It acts as a reservoir for molten steel and is located between the ladle and the mold. The tundish lower nozzle controls the flow of molten steel from the tundish into the mold, ensuring that the steel is distributed evenly and that the casting process is smooth.
Improved tundish lower nozzle design can help to reduce turbulence in the molten steel, which can lead to defects in the final product. By reducing turbulence, the steel can be cast more evenly, resulting in a higher quality product. Improved nozzle design can also help to reduce the amount of slag and other impurities that enter the mold, improving the overall quality of the steel.
Some of the key factors that should be considered when designing tundish lower nozzles include the shape and size of the nozzle, the angle at which the steel enters the mold, and the material used to construct the nozzle. Modern tundish lower nozzle designs may also incorporate advanced features such as sensors and computer-controlled flow rates to further improve casting efficiency.
| Item | UN-1 | UN-2 | UN-3 | UN-4 | UN-5 | UN-6 | |
| Chemical composition(%)≥ | AI2O3 | 80 | 75 | 80 | 68 | 60 | 65 |
| MgO | – | – | – | – | – | ||
| C | ≤6 | ≤6 | ≥3 | ≥4 | ≥4 | ≥4 | |
| Bulk density (g/cm3)≥ | 2.90 | 2.80 | 2.90 | 2.70 | 2.60 | 2.65 | |
| Apparent porosity (%)≤ | 15 | 15 | 15 | 15 | 15 | 15 | |
| Cold Crushing Strength(MPa)≥ | 70 | 60 | 40 | 40 | 40 | 25 | |
| Specifications could be adjusted as request. | |||||||
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