Method of producing powder forged components

Details Method of producing powder forged components Method of producing powder forged components

1989-02-27

1990-05-08

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Post sintering operation

419 28, B22F 326

Patent

active

049236741

ABSTRACT:
A method of producing powder forged components produces parts which precisely fit together, the method including the steps of: forming a one-piece preform by pressing from powder; forming at least one tear notch in the preform at a selected location; sintering the preform; providing a protective layer on each tear notch; forging the preform into a component, including closing each tear notch during the forging to form a corresponding slit; cooling the component; and separating the component at the corresponding selected location into a plurality of individual parts by breaking.

REFERENCES:
patent: Re32117 (1986-04-01), Weaver
patent: 3864809 (1975-02-01), Donachie
patent: 3889350 (1975-06-01), Mocarski
patent: 4049429 (1978-09-01), Donachie
patent: 4069044 (1978-01-01), Mocarski et al.
patent: 4094053 (1978-06-01), Weaver
patent: 4838936 (1989-06-01), Akechi
Tsumuti et al, "Application of Powder Forging to Automotive Parts", MPR Nov. 1984, pp. 629-637.

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