CONTINUOUS CASTING REFRACFORY
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Monoblock Stoppers
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This product has the characteristics of antioxidation, erosion resistance and high strength, using togerther with nozzles, suitable for the needs of several heats and long time for the con-casting ofslab, round billet, rectangle billent, and spectal steel have the function of preventing the nozzles from block by blowing argon to the tundish nozzles. |
|
Al2O3 (%) |
> 60 |
A.P. (%) |
< 18 |
|
C + SiC (%) |
> 25 |
B.D. (g/cm3) |
> 2.65 |
|
ZrO2 (%) |
|
C.C.S (Mpa) |
> 20 |
|
Si O2 (%) |
|
M.O.R. at romm
Temp. (Mpa) |
> 6.0 |
|
Refractoriness (ºC) |
> 1770 |
Resistance to thermal shock
(Times) |
> 5 |
Ladle Shrouds
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| Long nozzles are used to shroud the casing stream between ladle and tundish,having the function of reducing reoxidation and nitrogen absorption from the ambient air. The products are shapd by coldisostatic press, made of corundum and graphite, with high thermal shock resistance, superior erosion resistance. |
|
Item |
Al2O3-C (Body) |
Permeable Layer |
Fused Slilica |
|
Non heated |
Heated |
|
Al2O3 (%) |
> 40 |
> 45 |
90 |
|
|
C + SiC (%) |
> 28 |
> 28 |
|
|
|
ZrO2 (%) |
|
|
|
|
|
Si O2 (%) |
15-25 |
15-25 |
|
> 99 |
|
Refractoriness (¡æ) |
> 1770 |
> 1770 |
|
|
|
A.P. (%) |
< 20 |
< 20 |
|
< 19 |
|
B.D. (g/cm3) |
> 2.20 |
> 2.20 |
|
> 1.82 |
|
C.C.S (Mpa) |
> 18 |
> 18 |
|
> 40 |
|
M.O.R. at room
Temp. (Mpa) |
> 4.5 |
> 5.0 |
|
|
|
Permeability |
|
|
198 |
|
|
Resistance to thermal shock (Times) |
> 10 |
> 5 |
|
> 10 |
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Submerged Entry Nozzle
|
 |
Submerged nozzles using together with monoblock stoppers are used to shroud the casing stream between tundish and mould. This product has the function of flow control, shrouding and direction of the casting stream and also has high resistance to thermal shock, corrosion and mechanical cracking. |
|
Item |
Submerged Nozzle |
Fused Silica Submerged
Entry Nozzle |
|
Al2O3-C Body |
ZrO2-C Slag Line |
|
Al2O3 (%) |
> 45 |
|
|
|
C + SiC (%) |
> 26 |
> 15 |
|
|
ZrO2 (%) |
|
> 70 |
|
|
Si O2 (%) |
|
|
¡Ý 99 |
|
Refractoriness (¡æ) |
> 1770 |
> 1790 |
|
|
A.P. (%) |
< 18 |
< 20 |
¡Ü 18 |
|
B.D. (g/cm3) |
> 2.50 |
> 3.20 |
¡Ý 1.84 |
|
C.C.S (Mpa) |
>20 |
> 20 |
> 40 |
|
M.O.R. at romm
Temp. (Mpa) |
> 5.0 |
> 7.0 |
|
|
Permeability |
|
|
|
|
Resistance to thermal shock (Times) |
> 5 |
> 5 |
> 10 |
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SLIDING PLATES, LADLE AND TUNDISH NOZZLES AND WELL BLOCKS
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Burned Sliding gate plate |
 |
|
Brand
Item |
Al-Zr-C
Slide gate |
Magnesia
Slide plate |
Al2O3 ¨CC Slide Plate |
|
LTH-68 |
LTH-72 |
LTH-78 |
LTH-85 |
|
Al2O3 (%) ¡Ý |
72 |
8 |
68 |
72 |
78 |
85 |
|
ZrO2 (%) ¡Ý |
6 |
MgO¡Ý80 |
|
|
|
|
|
C (%) ¡Ý |
7 |
|
7 |
7 |
7 |
5 |
|
A.P. (%) ¡Ü |
8 |
10 |
8 |
8 |
10 |
10 |
|
B.D. (g/cm3) ¡Ý |
3.00 |
2.95 |
2.70 |
2.80 |
2.90 |
3.00 |
|
C.C.S (Mpa) ¡Ý |
120 |
50 |
80 |
90 |
100 |
120 |
|
HMOR (Mpa) ¡Ý
(1400¡æx0.5h) |
13 |
6 |
8 |
9 |
12 |
13 |
|
Light burned and unburned sliding plates
|
|
Alumina Carbon
Slide Gate
|
Al2O3-SiC-C
Sliding Plate
|
MgO-Al2O3 Spine Carbon Sliding Plate
|
|
Al2O3 (%) ¡Ý |
|
|
|
|
ZrO2 (%) ¡Ý |
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|
|
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C (%) ¡Ý |
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|
|
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A.P. (%) ¡Ü |
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|
|
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B.D. (g/cm3) ¡Ý |
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|
|
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C.C.S (Mpa) ¡Ý |
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|
|
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HMOR (Mpa) ¡Ý
(1400¡æx0.5h) |
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Slide gates for tundish tube changer
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With the development of con-casting technology, tube changers have been applied for the tundish in steel mills home and abroad. So we have developed the slide gate series products for tube changers, including porous upper nozzle, porous top and bottom plates, which have performed well in tube changers of Benxi Steel, second works of Anshan Steel, Taiyuan steel as well as foreign tube changers. |
|
Item |
Slide Plate |
Porous Upper Nozzle |
|
Plate |
Porous insert |
Nozzle Liner |
Porous Insert |
|
Al2O3 (%)¡Ý |
72 |
90 |
82 |
90 |
|
ZrO2 (%)¡Ý |
6 |
4 |
3.5 |
4.0 |
|
C (%)¡Ý |
7 |
|
Cr2O3¡Ý2% |
|
|
A.P. (%)¡Ü |
3.05 |
|
3.05 |
|
|
B.D. (g/cm3) ¡Ý |
120 |
|
|
|
|
C.C.S (Mpa) |
¡Ü10 |
20-22 |
¡Ü19 |
21-23 |
|
HMOR (Mpa) ¡Ý
(1400¡æx0.5h) |
12 |
|
|
|
|
Permeability
(0.1 Mpa) |
|
¡Ý30L/min |
|
¡Ý20L/min |
|