Introduction
The SES is used to guide molten steel from the tundish into the mold, a key element in preventing secondary oxidation and stabilizing the flow field.
| Position | Key Indicator | Performance Advantage |
| Body (General) | Al₂O₃ ≥60%, C ≥20%, Cold Modulus of Rupture ≥7MPa | High Strength and Erosion Resistance: High alumina-carbon material effectively resists erosion from molten steel and slag. |
| Slag Line | ZrO₂ ≥76%, C ≥10%, Bulk Density ≥3.85g/cm³ | Superior Slag Line Resistance: High zirconia-carbon material forms a robust barrier at the slag line, extending service life. |
Specification
| Grade | JH-SNA | JH-SNB | JH-SNZ | JH-SNH |
| Al₂O₃ (%) ≥ | 52 | 85 | – | 65 |
| C (%) ≥ | 25 | 10 | 15 | 15 |
| ZrO₂ (%) ≥ | – | – | 78 | 5 |
| AP (%) ≤ | 16 | 18 | 15 | 16 |
| BD (g/cm³) ≥ | 2.4 | 2.8 | 3.8 | 2.7 |
| MOR (MPa) ≥ | 6 | 5 | 6 | 12 |
| Area | Body | Bowl-like zone | Slag line | Sliding surface |
