Method of preventing segregation of metal powders

Details Method of preventing segregation of metal powders Method of preventing segregation of metal powders

1983-08-01

1985-03-12

Sebastian, Leland A.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Powder pretreatment

419 36, 419 37, 419 39, 419 64, 427221, B22F 100, B22F 102

Patent

active

045044414

ABSTRACT:
The present invention provides a method of preventing the segregation of powders of different specific gravities in a metal powder composition. The powder metal is admixed with the powders of lesser specific gravities, and furfuryl alcohol is added at the same time. While mixing, an acid is added to react with the furfuryl alcohol to convert the alcohol to a solid resin film on the powder metal particles. The powders of lesser specific gravities are bonded to the metal powder particles by the resin, and segregation of the metal powder and the lighter powders is eliminated.

REFERENCES:
patent: 2097671 (1937-11-01), Koehring et al.
patent: 3410684 (1968-11-01), Printz
patent: 3892644 (1975-07-01), Borg et al.
patent: 4256676 (1981-03-01), Kovach
patent: 4327186 (1982-04-01), Murata et al.

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