Method of producing a continuously processed copper rod

Details Method of producing a continuously processed copper rod Method of producing a continuously processed copper rod

C - Chemistry, Metallurgy

22

F

148/10, 22/167

C22F 1/08 (2006.01)

Patent

CA 1083017

ABSTRACT OF THE DISCLOSURE In a continuous casting system where molten copper is cast into a bar and then rolled into a rod, the copper rod is immediately hot-coiled before being subjected to any quenching or cooling operation. The hot-coiling of the rod is carried out at a temperature of from 700°F. to 1200°F. and preferably within a range of from 950°F. to 1150°F., so that the rod is hot-coiled at a high enough temperature to permit sufficient thermal vacancy diffusion to occur within the rod material, and thereafter gradually cooled to room temperature to thereby impart certain im- proved mechanical properties to the resultant rod product. A copper or copper alloy rod which is processed in this fashion has a lower yield tensile strength, lower ultimate tensile strength, lower recrystallization temperature, lower hardness and is much more ductile and hence easier to draw into wire than a corresponding rod which is quenched or cooled prior to coiling.

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