Description
The Submerged Nozzle serves as a protective barrier for molten steel, preventing oxidation as it transitions from the tundish into the crystallizer. Additionally, it facilitates the uniform distribution of molten steel within the crystallizer while managing its flow dynamics. Notably, this nozzle exhibits exceptional resistance to slag, effectively prevents blockages, boasts a prolonged operational lifespan, and contributes to a reduced occurrence of accidents.
Technique Data
Physical and chemical indicators：
| Item | Index | |||
| JSK55 | JSK50 | JSK45 | JSK40 | |
| Al2O3 % | ≥55 | ≥50 | ≥45 | ≥40 |
| C % | ≥16 | ≥18 | ≥20 | ≥22 |
| Flexural Strength MPa | ≥5.5 | ≥5.5 | ≥5.5 | ≥5 |
| Apparent porosity % | ≤19 | ≤19 | ≤19 | ≤19 |
| Bulk density g/cm3 | ≥2.36 | ≥2.32 | ≥2.28 | ≥2.18 |
Slag Area：
| Item | Index | |||
| Z75 | Z70 | Z65 | Z55 | |
| ZrO2 % | ≥75 | ≥70 | ≥65 | ≥55 |
| C % | ≥9 | ≥12 | ≥15 | ≥18 |
| Apparent porosity % | ≤21 | ≤21 | ≤21 | ≤22 |
| Bulk density g/cm3 | ≥3.6 | ≥3.5 | ≥3.4 | ≥3.2 |
