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Zirconia Ceramic Nozzle Inserts for Tundish Metering Nozzle
Tundish nozzle is an important component of continuous casting. Through the tundish nozzle, the molten steel flows from the tundish into the crystallizer. During this process, the outlet aperture will be eroded and widened, the amount of molten steel per unit of time increases and the surface of molten steel in the crystallizer rises, which requires increasing casting speed to digest the excess molten steel. With the further erode and widen of outlet aperture, adjusting casting speed can not digest all the excess molten steel, then releasing the excess molten steel through the mouth of the emergency is adopted though it's a waste of steel enterprises. Therefore, whether the outlet aperture of tundish nozzle remains constant is a most important measure of the quality. Usually, it is measured through the total use time in actual production.
The structural principle:
The tundish nozzle is a combination of inner core and exterior. The inner core is made of stabilized zirconia and zircon sand, producing through molding machines and high-temperature calcination. The exterior is made of zirconium and corundum, producing through molding machines and low-temperature baking. Tundish nozzle is located at the bottom of the tundish, it's the channel of liquid steel to flow from the tundish into the crystallizer.
Function of the tundish nozzle
1. Convey molten steel;
2. Control the flow rate of molten steel.
Zirconia Ceramic Nozzle Inserts for Tundish Metering Nozzle
Ladle nozzle
Tundish nozzle
tem | Index | ||
Zirconium core | Coat | ||
XF-94Z | XF-95Z | WG-65 | |
ZrO2 ≥ | 94 | 95 | - |
Al2O3 + C ≥ | 0 | 0 | 65 |
Apparent porosity % ≤ | 8 | 7 | 12 |
Bulk density g/cm3 ≥ | 4.5 | 5.4 | 2.8
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Tundish nozzle
Zirconia Ceramic Nozzle Inserts for Tundish Metering Nozzle
Lower-consumption on refractory material.
Simple-structure, light on weight.Use temperature up to 2400 ℃
High density
Low thermal conductivity (20% than of alumina)
Chemical inertness
Resistance to molten metals
Ionic electrical conduction
Wear resistance
High fracture toughness
High hardness
Zirconia Ceramic Nozzle inserts for tundish metering nozzle: is used for the continuous casting of steel. Many of our customers have achieved extended casting sequences and records when using our Zirconia nozzle inserts for tundish metering nozzles Our zirconia nozzle inserts have high densities,stability and excellent erosion resistance even in the most severe casting environments. Consistent casting speeds are achieved and the products have a high resistance to oxygen lancing.
Zirconia Ceramic Nozzle Inserts for Tundish Metering Nozzle
As one of the pioneer and professional manufacturer and exporter in China mainland, we would like to supply the high quality and attractive price stablized ZrO2 tundish ceramic nozzle for you.
