Process for producing sintered ferrous alloys

Details Process for producing sintered ferrous alloys Process for producing sintered ferrous alloys

1985-12-06

1986-09-30

Terapane, John F.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Consolidation of powder prior to sintering

419 19, 419 54, 419 58, 419 59, 419 57, B22F 100

Patent

active

046146385

ABSTRACT:
A method for producing a sintered ferrous alloy containing at least one alloying element whose standard free energy for oxide formation at 1,000.degree. C. is 11,000 cal/g mol O.sub.2 or less is described. The method comprises a sintering procedure comprising steps of elevating the temperature of a green compact comprising said at least one alloying element, sintering it in a sintering furnace and cooling it, wherein the pressure in the sintering furnace is maintained at between about 0.2 and 500 Torr by supplying a reducing gas during at least a part of the sintering procedure under reduced pressure.

REFERENCES:
patent: 1040699 (1912-10-01), Ladoff
patent: 2826805 (1958-03-01), Probst et al.
patent: 2933386 (1960-04-01), Pessel
patent: 3109735 (1963-11-01), Googin
patent: 3168607 (1965-02-01), Greene
patent: 4028100 (1977-06-01), Latva
McGannon, Harold E. (ed.), The Making, Shaping and Treating of Steel, 1964, pp. 1080-1130.

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