The stopper is mainly used for opening and closing the flow control of the tundish. it is installed in the tundish, and the flow rate of the molten steel entering the casting mold is adjusted by controlling the position of the stopper head to the tundish nozzle.
The ladle shroud is a product that connects the steel ladle and the tundish. When the molten steel casting from steel ladle into the tundish through the ladle shroud, it can prevent the molten steel from oxidation and splashing.
The submerged entry nozzle is to protect the molten steel from being oxidized by ambient air when flowing from tundish into the casting mold, and to uniformly distribute the molten steel into the casting mold and control the flow state of the molten steel.
Main physical and chemical performance index:
Index |
Stopper |
Body |
|
|
Alumina carbon |
Magnesia carbon |
|
Al2O3 % ≥ |
50 |
--- |
45 |
C+SiC % ≥ |
15 |
15 |
20 |
MgO % ≥ |
--- |
56 |
--- |
Bulk density g/cm3 ≥ |
2.60 |
2.40 |
2.40 |
Apparent porosity % ≤ |
16 |
18 |
17 |
CCS MPa ≥ |
22 |
--- |
20 |
CMOR MPa ≥ |
7 |
--- |
5 |
TSR (1100℃water cooling) times ≥ |
5 |
5 |
5 |
Index |
Ladle shroud |
Submerged entry nozzle |
|
|
|
Body |
Slag line |
Al2O3 % ≥ |
45 |
45 |
--- |
C+SiC % ≥ |
25 |
22 |
15 |
ZrO2 % ≥ |
2.40 |
--- |
70 |
Refractoriness ℃ ≥ |
--- |
1700 |
1700 |
Bulk density g/cm3 ≥ |
--- |
2.50 |
2.50 |
Apparent porosity % ≤ |
18 |
17 |
18 |
CCS MPa ≥ |
20 |
20 |
--- |
CMOR MPa ≥ |
5 |
5 |
--- |
TSR (1100℃water cooling) times ≥ |
5 |
5 |
5 |