Hi-density sintered alloy and spheroidization method for pre-all

Details Hi-density sintered alloy and spheroidization method for pre-all Hi-density sintered alloy and spheroidization method for pre-all

1996-06-24

1997-06-24

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75243, 75246, C22C 3500

Patent

active

056419228

ABSTRACT:
This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.

REFERENCES:
patent: 4909843 (1990-03-01), Leithner
patent: 5108493 (1992-04-01), Causton
patent: 5154881 (1992-10-01), Rutz et al.
patent: 5368630 (1994-11-01), Luk
patent: 5403371 (1995-04-01), Engdahl et al.
patent: 5462573 (1995-10-01), Baker et al.

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