Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1975-03-28
1977-05-24
Schafer, Richard E.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75200, 425 79, 425149, 264111, B22F 312
Patent
active
040253376
ABSTRACT:
Powdered metal is continuously introduced into a die cavity in discrete quantities and compacted into bar segments to form a bar. The cavity has a fixed cross-sectional area and is open at both ends, except during the initial compaction when one end is closed. After formation of a length of the bar, the frictional resistance between the bar and the cavity wall is relied on so that the bar remaining in the cavity serves as a stopper for subsequent compactions of the discrete quantities of powdered metal to form the continuous bar. The bar is forced out of the cavity and may be passed through an induction furnace for sintering, and through a swager, all preferably in a continuous operation. Also provided is means for varying the compaction so that the bar lengths formed from the discrete quantities of powdered metal are compacted and bonded into a bar of substantially uniform physical characteristics along its length.
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Lohman Gordon Russell
Woodburn James
Amsted Industries Incorporated
Anderson William G.
Kostka Fred P.
Schafer Richard E.
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