Back to results
US 3,941,570 AGranted
Conically capped extrusion billet
AssigneeAluminum Company of America
InventorRichard Couchman
Life of this patent
Estimating the term…
Abstract
Improved terminal end configuration for composite multi-metallic extrusion billets providing a reservoir of cladding metal for the initially extrudable portions thereof by selective introduction of metal powders into discrete core and cladding cavities within a deformable shell followed by isostatic compaction thereof.
Claims3
A composite multi-metal compacted powder extrusion billet for the high yield extrusion of selectively clad metal products comprising
- a core portion of a first high density compacted metal powder of generally cylindrical configuration,
- an externally cylindrically shaped sleeve of a second high density compacted metal powder of metallurgical characteristics differing from that of said first compacted metal powder disposed in encircling relation with said core portion,
- a generally conically shaped terminal portion of decreasing cross-sectional dimension disposed at one end of said core portion;
- and
- a generally conically shaped terminal portion of complementally increasing cross-sectional dimension disposed in encircling interfacially bonded relation with said terminal portion of said core member to provide a reservoir of said second metal for the cladding of the initially extruded portions of said billet.
2 more elements
Dependencies are inferred from the claim text.