Tundish Zircona nozzles are mainly with Zirconium inserted, featuring high refractoriness, and low expansion rate, superior resistance to erosion/corrosion and thermal shock and long service life. According to customers’ different needs, AGMC can provide various sizes and specifications.
Features Of Zircon Nozzle
*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
Applications Of Zircon Nozzle
*Tundish continuous casting machine.
Specifications Of Zircon Nozzle
*Zircon Nozzle
*Widely used throughout metallurgical industry
Chemical analysis and Physical Properties:
Items | Upper Nozzle | Lower Nozzle | Well Block | ||
| Zirconia core | Outside | Zirconia core | Outside | ||
| ZrO2+HfO2(%) | ≥95 | ≥95 | |||
| Al2O3(%) | ≥85 | ≥85 | ≥85 | ||
| MgO(%) | ≥10 | ||||
| C(%) | ≥3 | ≥3 | ≥12 | ||
| Buik Density g/cm³ | ≥5.2 | ≥2.6 | ≥5.1 | ≥2.6 | ≥2.6 |
| Apparent porosity % | ≤10 | ≤20 | ≤13 | ≤20 | ≤21 |
| Crushing strength Mpa | ≥100 | ≥45 | ≥100 | ≥45 | ≥45 |
| Thermal shock resistance | ≥5 | ≥5 | ≥5 | ≥5 | |
Tundish Lower Nozzle