Method for reducing iron carbide formation in cast nodular iron

Details Method for reducing iron carbide formation in cast nodular iron Method for reducing iron carbide formation in cast nodular iron

1979-04-27

1980-09-23

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 53, C22C 3308

Patent

active

042240646

ABSTRACT:
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.

REFERENCES:
patent: 2676097 (1954-04-01), Strauss
patent: 2867555 (1959-01-01), Curry
patent: 2889222 (1959-06-01), Kurzinski
patent: 3033676 (1962-05-01), Cox
patent: 3527597 (1970-09-01), Dawson
patent: 3661566 (1972-05-01), Percheron
patent: 3905809 (1975-09-01), Malizio
patent: 3955973 (1976-05-01), Robinson
Rosenberg, "Making Cast Iron and Cast Steel Alloys", Technology Assessment & Forecast, Ninth Report, pp. 136-139, (U.S. Dept. Commerce, 1979).
Dong, Henning & Ward, "Effects of Barium/Cerium Combinations in _Magnesium-Ferosilicon on Ductile Iron", 82nd Congress & _Exposition of the American Foundrymen's Society, (Apr. 1978).

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