| Refractoriness (℃): | 1580< Refractoriness< 1770 |
|---|---|
| Feature: | Long Time Materials |
| Type: | Refractory Material |
| Shape: | Block |
| Material: | Alumina Block |
| Insert Nozzle: | Zro2 |
| Samples: |
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| Customization: |
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CNC tundish upper nozzle
This product is suitable for continuous cast tundish open cast steel. The zirconium insert is made of high-purity zirconia, which is formed by high-pressure molding and sintering at high temperature. The outer is made of corundum and high-quality aluminum vanadium. It is formed by high pressure molding and baked at low temperature. The two are bonded with corundum mud, and the product's corrosion resistance and thermal shock stability have reached the domestic advanced level, which can fully meet the needs of various billet continuous casting. Tundish upper nozzle It is located within the tundish lining and conveys steel to the controlling exchangeable nozzle,which determines the steel flow. The stationary nozzle must be capable of withstanding long sequence times. Our Upper nozzle that incorporates a ultra-high densityLKZN-M or LKZN-H insert. The insert provides excellent erosion resistance and can provide extended casting sequence times. The lower surface of the stationary nozzle is ground to exacting tolerances to ensure maximum surface contact between the two nozzle components. Tundish lower nozzle It is located within an assembly that is fixed to the bottom of the tundish.The design of the exchangeable nozzle can vary according to the system manufacturer. We supplying a range of zirconia inserts and composite nozzle designs for the exchangeable metering of steel. Zirconia inserts can be supplied for on-site assembly into metallic holding blocks where cementing, grinding, size banding and on site drying are required prior to use. It was manufactured by both cast process of fine grained alumina method or presse process.
TUNDISH NOZZLE used for the continuous casting of steel.
Products used in Tundish can be offered to you as follow:
Tundish metering nozzle
Non swirling tundish nozzle
Tundish upper nozzle
Tundish lower nozzle
Tundish slide plate
Quick-exchange tundish nozzle
Ladle shroud
Subentry nozzle/ submerged entry nozzle
Monoblock stopper
MNC tundish metering Nozzle changer
Features:
Highest safety in open casting process
Incresed yield of production with long sequence casting
Nozzle change or strand close less than one second
Quick start/stop of individual strand
Easy handling and operation results in a safe system operantion
Compact climenshions
Advanced mechanical system
Mechanical fixation of upper nozzle
Sliding drive arrangement-easy cylinder handling for nozzle change
Clear view to the nozzle & mold
Good access for nozzle tip cleaning
Spring well protected in housing against splashes and dirt
CNC TUNDISH NOZZLE
The CNC is the most user friendly and safe nozzle change device currently available for billet,bloom and beam casters.
Features;
Reduced tundish costs (refractory,manpower, energy)
Increased casting yield
Increase caster utilization
Improved operational safety
Refractory components:
Upper nozzle plate designed to avoid exposure to steel splashes
Refractory components available for open stream casting and alternative blank plate or double stroke.
Upper nozzle(Stationary nozzle)
It is located within the tundish lining and conveys steel to the controlling exchangeable nozzle,which determines the steel flow. The stationary nozzle must be capable of withstanding long sequence times.
Our Upper nozzle that incorporates a ultra-high densityLKZN-M or LKZN-H insert.
The insert provides excellent erosion resistance and can provide extended casting sequence times.The lower surface of the
stationary nozzle is ground to exacting tolerances to ensure maximum surface contact between the two nozzle components.
Lower Nozzle (EXCHANGABLE)
It is located within an assembly that is fixed to the bottom of the tundish.The design of the exchangeable nozzle can vary according
to the system manufacturer.
We supplying a range of zirconia inserts and composite nozzle designs for the exchangeable metering of steel.
Zirconia inserts can be supplied for on-site assembly into metallic holding blocks where cementing, grinding, size banding and on site drying are required prior to use.
It was manufactured by both cast process of fine grained alumina method or presse process.
| Outer: Al2O3 | ||||
| Al2O3 | C | Apparent porosity | Bulk density | Compressive strength |
| (% minm) | (% minm) | (% max) | (gm./cc minm) | (MPa minm) |
| 75 | 4 | 8 | 2.95 | 60 |
| 80 | 4 | 7 | 2.95 | 60 |
| 94 | - | 15 | 2.95 | 60 |
| Zirconia Insert of Tundish Upper Nozzle | ||||
| ZrO2+HFO2 | Apparent porosity | Bulk density | C.C.S | Refractoriness |
| (% minm) | (% max) | (gm./cc minm) | (MPa minm) | (ºC minm) |
| 65 | 23 | 3.60 | 80 | 1790 |
| 70 | 23 | 3.70 | 80 | 1790 |
| 80 | 23 | 3.90 | 80 | 1790 |
| 84 | 23 | 4.00 | 80 | 1790 |
| 93 | 21 | 4.50 | 100 | 1790 |
| 94 | 21 | 4.90 | 100 | 1790 |
International standard seaworthy exportable packing.
1. Wooden case (Seaworthy standard packing)
2. Further packing information based on customer's requirements
The tundish metering nozzle is mainly used for continuous casting of tundish billets, blooms, rectangular billets, and small slabs for pouring steel.
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