Cast iron inoculant and method for production of cast iron inocu

Details Cast iron inoculant and method for production of cast iron inocu Cast iron inoculant and method for production of cast iron inocu

1998-06-16

2000-08-15

Willis, Prince

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75328, 420 33, 420581, 420578, 420590, C21C 704, C22C 106

Patent

active

061029831

ABSTRACT:
The invention relates to an inoculant for the manufacture of cast iron with lamellar, compacted or spheroidal graphite. The inoculant comprises between 40 and 80% by weight of silicon, between 0.5 and 10% by weight of calcium and/or strontium and/or barium, between 0 and 10% by weight of cerium and/or lanthanum, between 0 and 5% by weight of magnesium, less than 5% by weight of aluminium, between 0 and 10% by weight of manganese and/or titanium and/or zirconium, between 0.5 and 10% by weight of oxygen in the form of one or more metal oxides, the balance being iron, said inoculant further comprising between 0,1 and 10% by weight of sulphur in the form of one or more metal sulphides. The invention further relates to a method for the production of the inoculant.

REFERENCES:
patent: 3527597 (1970-09-01), Dawson
Sci.Bull.P.U.B., vol. 55, Nr.1-2, 1993, M. Chisamera et al.--"The Influence on the Morphology of the Graphite of S,O,Ti and A1 Inoculation after Mg-Treatment"--pp. 235-247 No Month.

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