Can You Melt Aluminum Directly Inside an Ingot Mold?
It’s a fair question for anyone new to casthouse operations, and the short answer is no — an ingot mold is not a furnace. An ingot mold is a small, non-precision vessel that simply receives molten aluminum already prepared elsewhere and holds it while it solidifies into a block. A sow mold, or sow mould, performs the same receiving role at a much larger scale, producing heavier blocks sold between aluminum plants. Understanding where melting actually happens helps explain why ingot mold and sow mold design looks the way it does. What an Ingot Mold Is Actually Designed to Do? An ingot mold has no burners, no induction coils, and no temperature control of any kind — it is not built to melt anything, only to receive aluminum that has already been melted upstream and let it cool and solidify on its own. Because it is a small, non-precision vessel producing a block that weighs only tens of kilograms, an ingot mold does not need tight dimensional tolerances; the block just needs to co
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