Tundish Refractory for Continuous Casting Is Suitable for Steel Casting
China Tundish Refractory for Continuous Casting Is Suitable for Steel Casting, Find details about China Tundish, Refractory from Tundish Refractory for Continuous Casting Is Suitable for Steel Casting
Basic Info.
Model NO.
100
HS Code
6902900000
Model NO.
100
HS Code
6902900000
Product Desciption
About packaging:
The products in the wooden packing box are packed in PE moisture-proof bags. Or can be customized according to your requirements
About products:
1,Monolithic Stoppers:
The integral stopper is mainly used in tundish. By controlling the position from the head of the stopper to the tundish nozzle, the molten steel flow into the mold can be adjusted, and argon can be blown into the tundish through the argon blowing hole to prevent the nozzle from blocking. According to the requirements of different steel grades and smelting conditions, we have developed aluminum carbon, magnesium carbon, aluminum zirconium carbon and magnesium aluminum carbon products to meet the production needs of various steel grades.
The typical physical and chemical indexes are as follows:
| Technical parameters | Body | Stopper Rod | |||
| DYQB-A | DYQB-B | DYQH-A | DYQH-B | DYQH-C | |
| Al203% ≥ | 58 | 53 | 60 | 70 | 6 |
| C% ≥ | 23 | 25 | 15 | 15 | 15 |
| ZrO2% ≥ | 10 | 5 | 0 | ||
| MgO% ≥ | 68 | ||||
| Apparent Porosity %≤ | 18 | 19 | 16 | 17 | `6 |
| Room temperature compressive strength Mpa≥ | 16 | 15 | 16 | 16 | 16 |
| Flexural strength at room temperature Mpa≥ | 5 | 4 | 5 | 5 | 5 |
| Thermal shock resistance ≥ | 6 | 6 | 6 | 6 | 6 |
2,Submerged nozzle:
The submerged nozzle can solve the problems of flocculent flow blockage and serious nozzle erosion in the process of casting low-carbon aluminum killed steel by adopting different materials and processes according to the different kinds of casting steel. The integral nozzle can avoid the problem that the steel flow sucks air when casting special steel due to the loose fit between the segmented submerged nozzle and the tundish nozzle The problem of secondary oxidation of molten steel caused by oxidation ensures the purity of molten steel.
The typical physical and chemical indexes were as follows
| Technical parameters | Submerged nozzle | |
| Noumenon: Al203-C | Slag line: ZrO2-C | |
| AL2O3-C % > | 60 | |
| C+SiC % > | 25 | 15 |
| ZrO2 % > | 70 | |
| SIO2 | ||
| Fire resistanceºC > | 1780 | 1780 |
| Apparent porosity < | 18 | 16 |
| bulk density> g/cm3 | 2.65 | 3.5 |
| Room temperature compressive strength> Mpa | 20 | 20 |
| Bending resistance at room temperature> Mpa | 7 | 7 |
| Thermal shock resistance> (frequency) | 6 | 6 |
3,Aluminum carbon long nozzle:
Long nozzle is also called protective sleeve, which is used for protective pouring of steel flow between ladle and tundish. It can prevent oxidation of molten steel and oxygen absorption from surrounding air, and avoid slag entrapment during open pouring. The alumina graphite protective tube formed by isostatic pressing has the advantages of thermal shock resistance and corrosion resistance.
Product features:
(1).Avoid baking. The product is designed according to the heat conduction theory and can be used directly in cold state.
(2).Long life. Special additives can be added in the production of slag line with long nozzle to improve the corrosion resistance of slag line. Products with the same thickness have the advantage of long service life.
Physical and chemical indexes of typical products:
| Technical parameters | ZCT-A | ZCT-B | ||
| noumenon | Air permeable layer | noumenon | Slag line | |
| Al203% > | 40 | 85 | 50 | |
| C% > | 27 | 25 | ||
| ZrO2% > | 20 | |||
| Apparent porosity % < | 16 | 16 | 12 | |
| Room temperature compressive strength Mpa > | 22 | 15 | 22 | |
| Flexural strength at room temperature Mpa > | 7 | 5 | 7 | |
| Thermal shock resistance> (frequency) | 6 | 6 | 6 | |
| Air permeability I/min | 100 | |||
4.Tundish nozzle
The upper nozzle of tundish is inlaid at the bottom of tundish and used with integral stopper to control the velocity and flow of molten steel. According to the requirements of the production of various specifications of tundish nozzle. According to the special requirements of the upper nozzle for flow control, the special raw materials and formula are used in the upper nozzle bowl to enhance the erosion resistance and corrosion resistance of the nozzle bowl. The flow control is stable and the hole is not enlarged. In view of the problem that some special steel grades are easy to be clogged in the nozzle bowl, the air permeable tundish upper nozzle can be developed and produced. The inner part of the nozzle is inlaid with an air passage to control the pore size and porosity of the bowl. By argon blowing, the nodulation on the surface of the bowl is prevented and the flow control is stable
Physical and chemical indexes of typical products:
| Technical parameters | Aluminum carbon | Composite aluminum carbon | Monolithic aluminum carbon | Mosaic zirconium | Sizing zircon |
| ZT1 | ZT2 | ZT3 | ZT4 | ZTD5 | |
| Al203%≥ | 75 | 75 | 75 | ||
| C%≥ | 7 | 6 | 7 | ||
| ZrO2%≥ | 10 | 8 | 85 | 85 | |
| Apparent porosity%≤ | 18 | 18 | 18 | 17 | 17 |
| bulk density g/cm3 | 2.7 | 2.7 | 2.7 | 4.2 | 4.2 |
| Room temperature compressive strength Mpa≥ | 40 | 40 | 40 | 45 | 45 |
| Flexural strength at room temperatureMpa> | 5 | 8 | 6 | 7 | 10 |
| Thermal shock resistance(frequency)≥ | 5 | 5 | 5 | 5 | 5 |
5,Tundish slag weir, impact plate and current stabilizer
The slag baffle is a matching product of continuous casting tundish. It can prevent molten slag from entering the mold, improve the quality of molten steel, and has the characteristics of corrosion resistance, high thermal stability and long service life.
The impact plate is used in the molten steel impact zone of tundish, and the nozzle seat brick is used to install the nozzle. Its brand, material and physical and chemical indexes are consistent with those of slag baffle. Users can reasonably match the baffle, impact plate and nozzle seat brick according to the smelting process conditions and the use of tundish.
6,Dry vibrating material for tundish:
This product is mainly used for tundish lining. It is the third generation product after tundish coating and insulation board. It has the characteristics of convenient construction, easy baking and long service life.
The main physical and chemical indexes were as follows:
| Technical parameters | TN-ZTG |
| Starting sintering temperature | 100 |
| Maximum operating temperature | 1700 |
| MgO % ≥ | 79 |
| CaO % ≥ | 17 |
| bulk density g/cm3 ≥ | 2.59 |
| Change rate of sintering line % | ±0.13 |
| Flexural strength Mpa ≥ | 3.9 |
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