tundish

A tundish is a crucial utensil used in metallurgical and glass manufacturing processes. It functions as a conduit that temporarily stores and distributes molten metal or glass from a furnace to subsequent casting or moulding operations. Typically made from refractory materials such as high-temperature ceramics, the tundish is designed to withstand extreme heat and chemical corrosion.

In steelmaking, the tundish plays a vital role in the continuous casting process. Molten steel is poured from a ladle into the tundish, which acts as an intermediate reservoir. From there, the steel flows steadily into molds, allowing for controlled and uninterrupted casting. The tundish helps maintain a consistent flow rate, prevent air entrapment, and enable the addition of alloying elements or slag removal during transfer.

In glass manufacturing, a tundish is used to transfer glass melt from a melting furnace to forming and shaping equipment. It ensures smooth and controlled flow, reducing the risk of quenching or solidification before reaching the molds.

Design features of tundishes include a slag door or tap hole for pouring and slag removal, and often include features to promote smooth flow and temperature control. Modern tundishes may incorporate flow control devices such as dams or channels, and are often equipped with refractory lining to withstand thermal stresses and chemical attack.

Overall, the tundish enhances efficiency, quality, and safety in metal and glass production by providing a controlled transfer point between high-temperature processing and shaping or casting stages.