The charge melts and gradually flows from the inclined hearth into the chamber for the accumulation of molten metal, which is therefore often called a piggy bank.įigure 4 - Reflective dry hearth melting furnace. Hot exhaust gases pass through the charge and quickly heat it up. In dry hearth furnaces, the charged aluminum charge is placed on an inclined hearth, which is above the level of the molten metal (figure 4). Reverberatory dry hearth melting furnaces Tilting Furnaces: More expensive and more convenient for dispensing or transferring finished molten metal.
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