In
metal casting, a tundish is a broad, open container with one or more holes in the bottom. It is used to feed molten metal into an ingot mould to avoid splashing and give a smoother flow. The tundish allows a reservoir of metal to feed the casting machine while
ladles are switched, thus acting as a buffer of hot metal, as well as smoothing out flow, regulating metal feed to the moulds and cleaning the metal. Metallic remains left inside a tundish are known as
tundish skulls and need to be removed, typically by mechanical means (scraping, cutting). A casting tundish is lined with
refractory bricks specific to the liquid metal which is being cast. A tundish preheater may improve performance by heating the refractory before pouring metal, and may allow removal of molten oxide and skull material while preheating. == References ==