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mitis casting
CIDE DICTIONARY
mitis casting, [Perh. fr. L. mitis mild.].
A process, invented by P. Ostberg , for producing malleable iron castings by melting wrought iron, to which from 0.05 to 0.1 per cent of aluminum is added to lower the melting point, usually in a petroleum furnace, keeping the molten metal at the bubbling point until it becomes quiet, and then pouring the molten metal into a mold lined with a special mixture consisting essentially of molasses and ground burnt fire clay; also, a casting made by this process; -- called also wrought-iron casting . [Webster 1913 Suppl.]
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