The tundish is the core equipment in the continuous casting process of steelmaking, serving as an indispensable transitional vessel that connects the upper pouring system and the lower crystallization system in modern steel production lines. As a key intermediate link in the continuous casting process, it undertakes critical transitional and regulating functions that directly affect the stability of production and the quality of finished steel products. It is mainly used to receive the molten steel poured from the ladle, stably store the high-temperature molten steel, and distribute the molten steel evenly to each crystallizer through the precision flow control device installed at the bottom.
In the traditional and modern steelmaking continuous casting process, molten steel discharged from the ladle features unstable flow rate and fluctuating pressure, which cannot be directly injected into the crystallizer. The tundish effectively solves this problem by buffering the intense impact of high-temperature molten steel, stabilizing the liquid level and flow pressure of molten steel, and avoiding casting defects caused by unsteady steel flow. Meanwhile, the professional flow control device equipped on the tundish can accurately adjust the pouring speed of molten steel according to production parameters, ensuring that each crystallizer obtains molten steel with consistent flow and temperature.
This stable distribution and buffering function not only guarantees the continuous and efficient operation of the whole continuous casting production line but also plays a vital role in purifying molten steel, reducing slag inclusion and air oxidation, and improving the surface quality and internal performance of steel billets. Therefore, the reliable operation of the tundish is the fundamental guarantee for high-efficiency, high-quality and low-consumption continuous casting production in the steel industry.
