Tundish Refractory Materials
Tundish Lower Nozzles for High-Performance Metal Casting
Tundish lower nozzles are a critical component in high-performance metal casting, as they play a crucial role in controlling the flow of molten metal from the tundish into the mold. The quality of ...
DESCRIPTION
Tundish lower nozzles are a critical component in high-performance metal casting, as they play a crucial role in controlling the flow of molten metal from the tundish into the mold. The quality of the nozzle and its design can have a significant impact on the quality of the final product and the overall efficiency of the casting process.
To achieve high-performance metal casting, tundish lower nozzles should be designed to ensure a smooth and uniform flow of molten metal into the mold. Any turbulence or interruptions in the flow can cause defects in the final product, leading to increased scrap rates and lower productivity. A well-designed nozzle should promote a consistent flow of metal, minimizing turbulence and ensuring a uniform distribution of the molten metal.
Another important factor to consider is the material used to construct the nozzle. The tundish lower nozzle is exposed to high temperatures, abrasive materials, and corrosive elements, which can lead to wear and tear. Choosing a material that can withstand these conditions and designing the nozzle to resist erosion and corrosion can extend its lifespan and minimize maintenance requirements.
Customization options for tundish lower nozzles can further optimize the casting process. For example, adjusting the size and shape of the nozzle orifice can help control the flow of molten metal into the mold, ensuring a consistent and uniform flow. Additionally, the nozzle’s angle can be customized to optimize the flow pattern for a particular casting process.
The use of advanced technologies in tundish lower nozzle design can also improve the casting process’s efficiency and quality. For example, computer-controlled flow rates and sensors can help optimize the flow of molten metal, 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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