top pouring

metallurgy

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July 14, 2026

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Top pouring is a method in metallurgy where molten metal is poured into ingot molds to solidify. This process is used for casting metals like steel and iron. In top pouring, molds are typically arranged in a row, and a crane delivers the molten metal from a ladle, filling each mold sequentially.12

This method can lead to splashing as the metal stream falls from the ladle into the mold. An alternative is bottom pouring, where metal fills molds from the bottom via runners, minimizing splashing and often utilizing mechanized systems. Porosity, caused by shrinkage during solidification or dissolved gases, is a common issue in casting that can affect the metal's properties.13

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Pouring procedures
In top pouring conducted in high-tonnage shops, a row of perhaps 20 molds is lined up in buggies on a railroad track in front of a pouring platform (see figure). A crane brings the ladle to the platform and holds it while the operator fills one…
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In top pouring conducted in high-tonnage shops, a row of perhaps 20 molds is lined up in buggies on a railroad track in front of a pouring platform (see figure). A crane brings the ladle to the platform and holds it while the operator fills one…
Read More