Metallurgical apparatus – With control means responsive to sensed condition – With means responsive to condition of treated material
Patent
1976-02-02
1977-10-18
Dost, Gerald A.
Metallurgical apparatus
With control means responsive to sensed condition
With means responsive to condition of treated material
266215, 266216, C21C 100
Patent
active
040542750
ABSTRACT:
A method and apparatus for producing modified grey iron, and particularly nodular cast iron, is disclosed. The apparatus comprises refractory elements including an inclined flow course for continuous reception of molten grey iron, a V-shaped inclined receptacle interposed in said course into which a predetermined supply of modifying agent, such as magnesium, is injected to react with said iron, and means for controlling the egress of iron from the receptacle in order to sequentially stage the build-up and dissipation of a pool of iron in said receptacle facilitating chemical reactions and thorough mixing for attaining and improving the homogeneity of the modified iron elements. The product and composition uniquely is characterized by about 3.5 carbon, by weight, 2.5% silicon, 0.2-0.9Mn sulfur no greater than 0.015%, the remainder being essentially iron; the composition is devoid of carbide and dross or slag and has a graphite nodule count of at least 400 per square millimeter in a 1/2inch section.
REFERENCES:
patent: 2339337 (1944-01-01), Hulme
patent: 2677609 (1954-05-01), Moore et al.
patent: 3773498 (1973-11-01), Eichbaum et al.
Cole Gerald S.
Kovacs Bela V.
Sensoli Robert A.
Smartt Herschel B.
Dost Gerald A.
Ford Motor Company
Malleck Joseph W.
Zerschling Keith L.
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