Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Patent
1976-11-22
1979-03-06
Hunt, Brooks H.
Stock material or miscellaneous articles
All metal or with adjacent metals
Having metal particles
428564, 428577, 75214, 75208R, 75208CS, 264111, B22F 300, B22F 304, B22F 320
Patent
active
041432088
ABSTRACT:
A method and a capsule and a blank for producing tubes, bars or similar profiled elongated dense metal objects, preferably in stainless steel qualities, by single or multi-stage extrusion of capsules which are filled with powder of metals or metal alloys or mixtures thereof or with mixtures of powder of metals and/or metal alloys with ceramic powder and sealed and which are adapted in their form to the desired object or intermediate product, as starting material a powder being used which consists at least predominantly of substantially spherical grains and the capsule filled with said powder and sealed being compressed by means of cold-isostatic pressure acting all round until the density of the powder reaches at least 80% of the theoretical density.
REFERENCES:
patent: 2756492 (1956-07-01), Pettibone
patent: 2990364 (1961-06-01), Porembka, Jr.
patent: 3117914 (1964-01-01), Wright et al.
patent: 3496622 (1970-02-01), Berghout et al.
patent: 3760143 (1973-09-01), Rondeau et al.
patent: 3807968 (1974-04-01), Finaly et al.
patent: 4050143 (1977-09-01), Aslund
Granges Nyby AB
Hunt Brooks H.
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