Method of producing flint

Details Method of producing flint Method of producing flint

1976-07-19

1978-05-16

Satterfield, Walter R.

Metal treatment

Compositions

Heat treating

75152, 148 3, B22D 2500, C22C 2300

Patent

active

040897060

ABSTRACT:
Flint is produced from a mischmetal and iron melt by permitting the alloy melt to cool in a mold at a slow enough rate that, as the solidification point of the melt is approached, its temperature is maintained at 800.degree.-600.degree. C for at least 10 minutes. The alloy melt is subsequently extruded and the extrudate is subjected to a heat treatment at temperatures from 370.degree.-470.degree. C for 1/2 to 4 hours, the heat treatment being discontinued before the limit value of the thermodynamic equilibrium has been reached.

REFERENCES:
patent: 2792301 (1957-05-01), Bungardt
patent: 3236633 (1966-02-01), Bungardt
patent: 3839101 (1974-10-01), Doser
patent: 3839102 (1974-10-01), Tawara et al.

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