Exchang Nozzle Mnc Upper Nozzle
The upper nozzle is located in the inner layer of the tundish, through which the molten steel flows to the replaceable sizing nozzle that plays a controlling role and determines the flow rate accordingly. The upper nozzle must be able to withstand long sequence times.
Products Description
Exchang Nozzle Mnc Upper Nozzle is manufactured from high-density zirconia material, maintaining stable flow and structural integrity under high-temperature continuous casting conditions. It exhibits resistance to erosion and thermal shock, making it suitable for extended periods of continuous casting operation.
Performance Advantages
1. Erosion Resistance
- Zirconia exhibits high chemical stability and resists reaction under prolonged exposure to high-temperature molten steel and slag. The inner wall of the upper nozzle erodes slowly with minimal aperture change, ensuring stable pouring conditions throughout the continuous casting cycle. This minimizes flow control issues caused by channel enlargement.
2. Thermal Shock Resistance
- During continuous casting operations, the upper nozzle frequently undergoes thermal cycling from preheating to pouring and shutdown. Stabilized zirconia effectively buffers thermal stresses, minimizing crack risks from rapid temperature shifts. It maintains structural integrity even in high-speed production lines.
3. Stable Flow
- Precision machining and optimized flow channels ensure high inner wall smoothness, minimizing resistance to molten steel flow and reducing turbulence and eddy currents. This stable flow pattern helps decrease inclusion adhesion and deposition, enhancing molten steel cleanliness and improving billet surface quality.
4. Impact and Wear Resistance
- Under high flow rates and extended continuous pouring conditions, the Exchang Nozzle Mnc Upper Nozzle exhibits excellent resistance to mechanical erosion from molten steel. The nozzle edges remain free from chipping or flaking, ensuring uniform overall wear and a more predictable service life.
5. Extended Service Life
- With slower erosion and reduced cracking, the Exchang Nozzle Mnc Upper Nozzle typically achieves longer service cycles under identical operating conditions. This minimizes labor and downtime losses from frequent replacements. From a long-term operational perspective, it helps reduce the overall cost of continuous casting systems.
6. Strong Adaptability
- Whether used with ordinary carbon steel, stainless steel, or high-purity alloy steels, the Exchang Nozzle Mnc Upper Nozzle delivers consistent performance. It is particularly suited for demanding conditions such as extended continuous casting, high temperatures, or high flow rates where refractory materials face severe stress.
Why Choose Us
Our company designs a range of zirconia high-temperature products, including: - Zirconia nozzles for continuous casting in steelmaking, quick-change sizing nozzles, and ladle nozzles; - Zirconia slide plates and zirconia rings for converter pouring; - Calcium-stabilized zirconia nozzles and magnesium-stabilized zirconia nozzles for the powder metallurgy industry; and a series of other zirconia products suitable for high-temperature applications.If interested, please click below to send an inquiry immediately.
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