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Laddle Shroud Nozzle
The 2 types of continuous casting nozzles are shroud nozzles and the submerged entry nozzles.These are the refractories, used to improve steel quality ; prevent the entry of air into the ladle & tundish, or into the tundish & mold of the Entry Nozzle. By using high-tech facilities, and through product control, we are able to manufacture and supply superior products, made of excellent materials such as alumina graphite, zirconia-graphite and so on.
 
 

 Properties of Shroud Nozzle

Application

Body

Slag Zone

Properties

CRAG-L38

CRAG-L42

CRAG-L44

GRAG-L15

CRZG-L30

CRAZ-L43

Chemical
Analysis(%)

F·C+SiC

29+1

29+1

31+2

29+1

26+0

27+0

Al 2 O 3

41

41

53

50

-

17

SiO 2

26

25

9

16

-

10

ZrO 2

3

3

-

1.5

69

43

Apparent Porosity(%)

16.0

16.2

15.0

17.0

16.0

16.0

Bulk Densit

2.20

2.22

2.40

2.30

3.20

2.70

Cold Crushing Strength
( ㎏ /m 2 )

250

260

280

280

230

240

Modulus
of Rupture ( ㎏ / ㎠ )
at 1,400℃

70
55

70
60

100
80

90
70

70
50

80
60

Thermal Expansion(%)
at 1.000℃

+0.20

+0.21

+0.33

+0.25

+0.33

+0.32

Remarks

·High spalling
resistance
·Corrosion
resistance

·Corrosion
resistance
·High
spalling
resistance

·High
oxigenized
steel
·High
spalling
resistance

·High
corrosion
resistance
·Use after
preheating

·Corrosion
resistance
for slag

·High
Corrosion
resistance
for slag nad
steel