Fabrication of copper

Details Fabrication of copper Fabrication of copper

1977-07-27

1978-09-05

Lanham, C.W.

Metal working

Method of mechanical manufacture

Shaping mating parts for reassembly in different positions

148 16, B22F 324

Patent

active

041108922

ABSTRACT:
Elongate copper bodies, such as rods and wires, of electric conductor grade are made by electrodepositing copper as brittle cathodes which are then broken into fragments and fed as such to a continuously-acting friction-effected extrusion machine (such as Conform or Linex) which consolidates, bonds and extrudes them. The fragments have a specific surface area of about 25 - 1000 mm.sup.2 /g, and they are not subjected to any high-temperature purification or grain growth step prior to extrusion, though moderate pre-heating is allowed. Avoidance of high-temperature processing, such as conventional casting and hot-rolling, saves much energy and in addition copper of higher quality is produced.

REFERENCES:
patent: 1822939 (1931-09-01), Stout
patent: 1846697 (1932-02-01), Stout, Jr. et al.
patent: 1913133 (1933-06-01), Stout
patent: 1938608 (1933-12-01), Osborn et al.
Copper, The Metal: Its Alloys and Compounds, Edited by A. Butts, American Chemical Society Monograph Series No. 122, Reinhold, N.Y. 1960, pp. 245-246, 362, 618-620.
Stout, AIME, Paper No. 1238, Oct. 1940.
Tyssowski, American Institute of Mining & Metallurgical Engineers, Paper No. 1217, (Feb. 1941).
The Extrusion of Metals, by C. E. Pearson & R. N. Parkins, Chapman & Hall Ltd., London 1960, pp. 326-329.

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