B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
75/165
B22F 3/16 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2035378
ABSTRACT Methods for preparing sintered components from iron- containing and alloy steel powder are provided. The methods include compacting a powder mixture in a die set at a pressure of at least about 25 tsi to produce a green compact which is then presintered at a temperature of about 1100-1600°F (593- 870°C) for at least about 5 minutes to produce a presintered preform. The presintered preform is then compacted at a pressure of at least about 25 tsi to produce a double-pressed presintered preform, which is, in turn, sintered at a temperature of at least about 1000°C for at least about 5 minutes to produce a sintered component having improved transverse rupture strength and a higher density.
Causton Robert J.
Fulmer John J.
James William B.
Causton Robert J.
Fulmer John J.
Gowling Lafleur Henderson Llp
Hoeganaes Corporation
James William B.
LandOfFree
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