Process for joining powder metallurgy objects in the green (or b

Details Process for joining powder metallurgy objects in the green (or b Process for joining powder metallurgy objects in the green (or b

1997-11-14

2000-03-07

Jenkins, Daniel J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428546, 75228, 419 2, 419 5, 419 39, 419 44, 419 54, 419 55, B22F 702

Patent

active

060337885

ABSTRACT:
In a process for producing powder metallurgy objects containing two or more individually formed pieces, the individual formed pieces or powder compacts which are comprised of powder and a binder are joined together. A polymer compatible with the binder is sandwiched between two such powder compacts. A lamination joint is formed. The polymer is then softened, and a resultant aggregate body is thermally processed to remove the binder and polymer. The resulting object has no residual interface between the original individually formed pieces. There is no discernable boundary at the lamination joint. The final part is homogeneous and uniform with no foreign material or structural imperfections at the joint.

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