A tundish nozzle, also known as a tundish slide gate nozzle or simply a nozzle, is a refractory component used in the steelmaking industry to control the flow of molten steel from the tundish to the mold during continuous casting processes. It is a critical part of the tundish slide gate system, which regulates the steel flow and enables precise control of the casting process. Here's what you need to know about tundish nozzles:
Design and construction: Tundish nozzles are typically made from high-quality refractory materials, such as alumina, magnesia, zirconia, or a combination of these materials, depending on the specific application requirements. They are designed as a nozzle-shaped structure with a small opening at one end and a control mechanism at the other end.
Function: The primary function of a tundish nozzle is to control the flow of molten steel from the tundish into the mold during continuous casting. It acts as a movable gate that can be opened or closed to regulate the steel flow rate and ensure a steady and controlled casting process.
Flow control mechanism: Tundish nozzles are equipped with a control mechanism, such as a slide gate system, that allows for precise adjustment of the nozzle opening. This mechanism enables operators to control the steel flow according to the casting requirements, ensuring consistent quality and dimensional accuracy of the cast products.
Refractory properties: Tundish nozzles are designed to withstand the high temperatures and thermal cycling encountered in the steelmaking process. They exhibit excellent refractory properties, including high-temperature resistance, thermal shock resistance, and resistance to erosion from the flowing molten steel.
Wear resistance: Tundish nozzles are subject to wear and erosion due to the continuous flow of molten steel. They are engineered to have good wear resistance, extending their service life and reducing the need for frequent replacements.
Gas tightness: Tundish nozzles should provide a gas-tight seal to prevent the ingress of air or gases into the steel stream during casting. This ensures the quality and cleanliness of the final steel product.
Installation and maintenance: Tundish nozzles are installed and maintained by skilled operators. Proper installation, alignment, and periodic inspections are essential to ensure the effective functioning of the nozzle and prevent issues such as leakage or excessive wear.
Size and customization: Tundish nozzles are available in various sizes to accommodate different tundish and mold designs. They can also be customized to meet specific requirements, such as flow capacity, refractory material composition, or control mechanism preferences.
Tundish nozzles play a crucial role in the continuous casting process, enabling precise control of the steel flow from the tundish to the mold. Their high-temperature resistance, wear resistance, and gas tightness contribute to the efficiency, quality, and reliability of steel production.
 
Buy low cost high quality tundish nozzle. The tundish nozzle is used on the bottom of tundish, in conjunction with mono block stopper it controls the molten steel flow rate, stop the molten steel and adjust the flow direction. MGM Tundish nozzle has properties of good resistance to rushing scour, strong resistance to erosion, high flow-controlling stability.
 
Item
 
Al2O3-C Type
Composition
Al2O3-C Type
Mono
Al2O3-C Type
Inclyed
Al2O3-C Type
 
Sizing  Zircon Type
SLT
FSLT
ZSLT
ZSLT
DSG
Al203≥%
75
75
75
 
 
C≥%
7
6
7
 
 
ZrO2≥%
10
8
 
85
85
Apparent Porosity ≤%
18
18
18
17
17
Bulk Density ≥g/cm3
2.7
2.7
2.7
4.2
4.2
Crushing Cold Strenth ≥Mpa
40
40
40
45
45
ColdModulusof Rupture≥Mpa
12
12
12
14
14
Thermal Shock Resistance≥
5
5
5
5
5