Method of making selectively carburized forged powder metal part

Details Method of making selectively carburized forged powder metal part Method of making selectively carburized forged powder metal part

1978-05-31

1979-08-21

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 166, 148126, C21D 148

Patent

active

041652436

ABSTRACT:
A powder metallurgical process for producing dense low-alloy ferrous parts having selected carburized surface portions in which a metal powder of the desired composition is briquetted into a shape-retaining preform, the preform is masked, sintered, carburized whereafter the mask is removed and the resultant preform is forged to a desired final shape. The forged part is then quenched immediately following the forge operation for hardness or if desired it can be further heat treated in another manner to obtain other mechanical properties.

REFERENCES:
patent: 3180765 (1965-04-01), Townsend et al.
patent: 3344817 (1967-10-01), Conard
patent: 3408237 (1968-10-01), Gulliksen et al.
patent: 3661820 (1972-05-01), Foreman et al.
patent: 3873376 (1975-03-01), Ritzka
patent: 3992763 (1976-11-01), Haynie et al.
patent: 4062702 (1977-12-01), Kunst et al.

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