Process for producing sintered ferrous alloys

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

B - Operations, Transporting

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B22F 3/10 (2006.01) B22F 3/24 (2006.01) C22C 33/02 (2006.01)

Patent

CA 1190418

ABSTRACT OF THE DISCLOSURE A method for producing a sintered ferrous alloy containing at least one alloying element whose standard free energy for oxide formation at 1,000°C is 11,000 cal/g mol O2 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.

375600

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