Skip to content
Tundish refractories commonly used
During the steelmaking process, the tundish has to withstand extremely high temperatures and erosion from the molten steel. Choosing the right refractory material is therefore very important.
1. High-aluminum refractory
High-aluminum refractory is made of high-alumina as the main raw material and is fired at high temperature. It has high refractoriness and good erosion resistance, and can maintain stable performance under high temperature environment. It is one of the commonly used refractory materials for tundish.
2. Magnesium refractory
The main constituent of magnesium refractory is magnesium oxide, and has excellent slag resistance and high temperature holding. In the process of making steel, it can effectively resist the erosion of steel slag and ensure the integrity and stability of the lining of the tundish.
3.monolithic refractory
Monolithic refractories like castables, refractory plastics, etc. have the characteristics of a practical design and a high degree of adaptability. For fast and effective tundish protection, they can be customised to suit the shape and size of the tundish.
Tundish Material Properties
Many factors need to consider when selecting tundish materials, including stability at high temperatures, corrosion resistance, thermal shock stability, etc.
1.High level of temperature stability
Tundish materials need to be able to withstand extremely high temperatures and continue to perform, without melting or deformation. Only in this way can the tundish be ensured to operate normally in a high temperature environment.
2. Corrosion resistance
During the process of making steel, the chemical components in molten steel and slag will cause erosion to the refractory materials. As a result, the materials used in the tundish must have good corrosion resistance to withstand this erosion.
3.Stability to thermal shock
During the continuous casting process, the temperature of the molten steel in the tundish will fluctuate frequently. This requires the tundish material to have excellent thermal shock stability and be able to maintain the integrity and stability of the structure under rapid temperature changes.
Tundish refractory application in tundish
Refractory materials for tundish play an important role in the tundish. They not only withstand high temperature and corrosion, but also ensure the quality of molten steel and the stability of the continuous casting process.
1. Constitute the lining and protect the tundish
Refractory materials, as the lining of the tundish, can directly withstand the high temperature erosion of molten steel. They effectively isolate the molten steel from the tundish body by forming a protective oxide layer, ensuring the long-term stable operation of the tundish.
2. Stabilize the temperature of molten steel
The thermal conductivity of refractory materials plays a key role in stabilizing the temperature of molten steel. By rationally selecting and designing the structure of refractory materials, the temperature of molten steel can be precisely controlled to ensure the temperature stability of molten steel during continuous casting.
3. Purify molten steel and improve quality
Some refractory materials also have the function of purifying molten steel. They can adsorb and remove impurities and inclusions in molten steel to improve the purity and quality of molten steel.
summary
As a key component in steel smelting, the selection and application of refractory materials for tundishes are of great significance to ensure the stability of the steelmaking process and improve the quality of molten steel. By understanding the commonly used refractory materials for tundishes, their characteristics and applications, we can have a deeper understanding of the working principle of this "transfer station". With the advancement of science and technology and the development of industry, I believe that more innovative refractory materials will appear in the future, injecting new vitality into the development of the steel industry.
