|
| |
 |
creep resistance |
|
thermal shock resistance |
|
chemical resistance |
|
non-wetting and impenetrable by molten metal |
Common applications:
|
ladle and tundish in steel-making |
Upper Nozzles
|
 |
UN1 |
UN2 |
UN3 |
UN4 |
UN5 |
UN6 |
UN7 |
UN8 |
UN9 |
|
Al2O3 % min |
80 |
85 |
65 |
65 |
90 |
93 |
90 |
92.5 |
55 |
|
C % min |
6 |
8.8 |
4 |
6 |
- |
- |
- |
- |
- |
|
显气孔率Apparent
porosity, ≤ % |
浸渍Impregnated |
10 |
3 |
10 |
10 |
6 |
2 |
6 |
2 |
6 |
|
Not impregnated |
16 |
10 |
19 |
16 |
- |
- |
- |
- |
21 |
|
体密Density,
≥ g/cm3 |
2.82 |
2.90 |
2.80 |
2.85 |
3.10 |
3.25 |
3.10 |
3.30 |
2.80 |
Lower
Nozzles
|
 |
LN-1 |
LN-2 |
LN-3 |
LN-4 |
LN-5 |
LN-6 |
LN-7 |
|
Al2O3 % min |
65 |
80 |
74 |
76 |
65 |
55 |
60 |
|
C % min |
4 |
6 |
7 |
6 |
6 |
- |
- |
|
显气孔率Apparent
porosity, ≤ % |
浸渍Impregnated |
10 |
|
Not impregnated |
21 |
21 |
21 |
16 |
21 |
21 |
21 |
|
