Elkem Metals Company

Union Carbide Corporation

Paul J Bilek

Thomas K McCluhan

Richard A Flinn

Paul K Trojan

William A Henning

Julian M Dong

The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth elements, about 0.5 to about 4% magnesium, about 0.5 to about 6.5% carbon (percent by weight) the balance being iron.

Alloy useful for producing ductile and compacted graphite cast irons

Alloy and process for producing ductile and compacted graphite cast irons

A method for the production of cast nodular or ductile iron wherein molten iron having been first contacted with a graphite-spheroidizing agent is after-treated with an alloy consisting essentially of silicon, calcium, magnesium, aluminum, cerium, barium, and iron so as to reduce the formation of iron carbides or chill in the resulting cast nodular iron.

Method for reducing iron carbide formation in cast nodular iron

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Danbury, CT, United States of America

Paul J Bilek