Stopper, Ladle Shroud, Submerged Entry Nozzle

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Stopper, Ladle Shroud, Submerged Entry Nozzle

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

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