[경제] How to Choose a Tundish Stopper Rod to Improve Casting Efficiency?
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Tired of frequent tundish stopper replacement? Choosing the right material and design makes improving casting efficiency simple!
The tundish stopper is a crucial component for controlling steel flow. Selecting the appropriate material and optimizing the design can significantly enhance casting efficiency and reduce production costs. This article delves into how to choose the right tundish stopper based on actual needs and shares practical tips for improving efficiency.
So, how do you choose the right tundish stopper material and design for truly improved casting efficiency? Let’s take a closer look.
How Does Tundish Stopper Design Impact Flow Control?
Good design allows for more precise steel flow control!
Why is the Material Selection of Tundish Stoppers So Important?
Incorrect tundish stopper material selection can lead to short lifespan or, worse, affect steel quality!The tundish stopper is in direct contact with high-temperature molten steel, making material selection critical. Different materials have varying resistance to high temperatures, erosion, and thermal shock. Choosing the right material effectively extends the stopper’s service life, reduces replacement frequency, and ensures consistent steel quality.When selecting a tundish stopper material, factors such as steel grade, casting temperature, and operating environment need to be considered. Here are some commonly used tundish stopper materials and their characteristics:
| Material | Main Components | Advantages | Disadvantages | Suitable Steel Grades |
|---|---|---|---|---|
| Alumina-Silicon Carbide | Al2O3, SiC, C | Excellent erosion and thermal shock resistance, effectively resisting molten steel erosion and temperature changes. | Relatively high cost, low high-temperature strength. | Carbon steel, low alloy steel |
| Zirconia | ZrO2 | Extremely high refractoriness and erosion resistance, capable of withstanding extremely high casting temperatures. | Very high cost, poor thermal shock resistance. | High alloy steel, stainless steel |
| Spinel | MgO·Al2O3 | Good erosion and thermal shock resistance, moderate cost. | Relatively low refractoriness, not suitable for ultra-high temperature casting. | Most steel grades |
| Mullite | 3Al2O3·2SiO2 | Inexpensive and easy to process, but poor refractoriness and erosion resistance. | Short service life, prone to damage. | Small batch, low-requirement casting scenarios |
Choosing the right material is like putting a sturdy armor on the tundish stopper, effectively extending its service life and reducing downtime losses. As ZTMaterials®, with 16 years of experience in the refractory materials industry, I can provide professional material selection advice based on your production environment and steel grade characteristics.The head design of the tundish stopper directly affects the flow and velocity of molten steel. A well-designed stopper can effectively control the flow of molten steel, avoiding turbulence and splashing, ensuring a smooth and uniform steel injection process, thereby improving the quality of the billet. The multi-stage diversion hole design is a relatively advanced solution that enables more precise flow control.There are various tundish stopper head designs, commonly including straight-through, conical, and stepped types. Each design has its advantages and disadvantages, and the choice should be based on actual needs:
| Design Type | Characteristics | Advantages | Disadvantages | Applicable Situations |
|---|---|---|---|---|
| Straight-Through | Simple structure, molten steel flows directly out. | Low cost, easy to manufacture. | Poor flow control precision, prone to turbulence. | Applications where flow control requirements are not high. |
| Conical | The head is conical, which can reduce the velocity of molten steel. | Relatively stable flow control. | Prone to clogging, inconvenient cleaning. | Applications requiring a certain degree of flow control. |
| Stepped | The head is designed with multiple steps, which can gradually control the flow of molten steel. | High flow control precision, effectively avoiding turbulence and splashing. | Relatively difficult to manufacture, high cost. | Applications with high flow control precision requirements. |
| Multi-Stage Flow Hole | The head is designed with multiple diversion holes. By adjusting the size and number of diversion holes, precise flow control can be achieved. | Extremely high flow control precision, the flow rate can be flexibly adjusted as needed. | Complex design with high material requirements. | High-end casting, requiring extremely high molten steel quality and flow control. |
In addition, the overall structure of the stopper needs to be considered, such as whether to add gas channels to prevent gas accumulation from affecting steel quality. ZTMaterials® can customize tundish stopper designs tailored to your casting process, optimizing flow control and enhancing casting quality. More information please visit Henan Yangyu Refractories Co.,Ltd
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