Powdered metal multiple piece component manufacturing

Details Powdered metal multiple piece component manufacturing Powdered metal multiple piece component manufacturing

1990-01-16

1991-09-24

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Post sintering operation

419 28, 419 38, B22F 326

Patent

active

050512323

ABSTRACT:
The separation of two or more forged powder metal components is facilitated by forming a compacted and sintered powder metal preform with at least one slit that separates the component pieces. An anti-bonding agent such as graphite is introduced into the slit and the preform is then forged to final shape. The anti-bonding agent prevents the complete bonding of the powder metal pieces to each other thereby facilitating separation of the pieces at the slit. This method is particularly suited for the manufacture of piston connecting rod assemblies of the type including a connecting rod and cap.

REFERENCES:
patent: 4569109 (1986-02-01), Fetouh
patent: 4693139 (1987-09-01), Mukai et al.
patent: 4923674 (1990-05-01), Weber
Tsumuti et al., "Application of Powder Forging to Automotive Parts " MPR Nov. 1984, pp. 629-637.

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