Here are the steps involved in preparing the tundish for continuous casting:
Cleaning: The tundish needs to be cleaned thoroughly before use to remove any contaminants or residues that may have accumulated during the previous casting process. This is usually done using high-pressure water jets or by scraping the surface of the tundish.
Preheating: The tundish is preheated to a temperature that is slightly lower than the molten steel to be poured into it. This helps to prevent thermal shock and cracking of the tundish.
Lining: The tundish is lined with a refractory material to prevent the molten steel from reacting with the tundish material and to protect the tundish from wear and tear. The refractory material is usually a mixture of silica, alumina, and other materials that can withstand high temperatures.
Flow control: The tundish is designed with various weirs, dams, and stopper rods to control the flow of molten steel from the ladle to the mold. These features help to maintain a constant flow rate and prevent turbulence in the molten steel.
Monitoring: The tundish is constantly monitored during the casting process to ensure that the molten steel is flowing smoothly and that there are no blockages or leaks. Any issues that arise during casting are addressed immediately to prevent defects in the final product.
By following these steps, the tundish can be prepared for continuous casting in a steel plant, ensuring a smooth and efficient casting process.
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