Tundish Refractory Materials
Tundish Lower Nozzle for Steel Casting
Tundish Lower Nozzles are an essential component in the continuous casting process of steel. They are used to control the flow of molten steel from the tundish (a container that holds the molten st...
DESCRIPTION
Tundish Lower Nozzles are an essential component in the continuous casting process of steel. They are used to control the flow of molten steel from the tundish (a container that holds the molten steel) to the mold in the casting machine.
The tundish lower nozzle is typically made from a high-strength refractory material, such as alumina graphite, that can withstand the high temperatures and corrosive nature of the molten steel. The nozzle is designed with a specific inner diameter and shape to ensure that the molten steel flows smoothly and consistently through the nozzle and into the mold.
One important factor to consider when selecting a tundish lower nozzle for steel casting is the flow rate of the molten steel. This will depend on the specific requirements of the casting process, such as the size and shape of the mold, the steel composition, and the desired casting speed. Different sizes of nozzles are available to accommodate different flow rates, and the flow rate can also be adjusted by varying the pressure of the molten steel in the tundish.
Another important consideration is the lifetime of the nozzle. Over time, the high temperatures and corrosive nature of the molten steel can cause the refractory material of the nozzle to degrade, which can lead to reduced flow rate and quality issues in the castings. It is important to select a high-quality tundish lower nozzle with a long lifetime to minimize downtime and maintenance costs.
| Nozzle Size | Inner Diameter (mm) | Outer Diameter (mm) | Length (mm) | Shape | Refractory Material | Flow Rate (m³/h) | Pressure Drop (bar) | Nozzle Lifetime (hours) |
|---|---|---|---|---|---|---|---|---|
| 6T | 6 | 20 | 80 | Straight | Alumina graphite | 8-10 | 0.05-0.10 | 8-12 |
| 8T | 8 | 22 | 80 | Straight | Alumina graphite | 10-12 | 0.08-0.12 | 8-12 |
| 10T | 10 | 24 | 80 | Straight | Alumina graphite | 12-15 | 0.12-0.15 | 8-12 |
| 12T | 12 | 26 | 80 | Straight | Alumina graphite | 15-20 | 0.15-0.20 | 8-12 |
| 14T | 14 | 28 | 80 | Straight | Alumina graphite | 20-25 | 0.20-0.25 | 8-12 |
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