Fine copper wire for electronic instruments and method of manufa

Details Fine copper wire for electronic instruments and method of manufa Fine copper wire for electronic instruments and method of manufa

1989-09-14

1991-01-22

Rosenberg, Peter D.

Metal treatment

Compositions

Heat treating

148411, 148432, C22C 900

Patent

active

049868560

ABSTRACT:
A fine copper wire for electronic instruments is disclosed which comprises 0.05 to 10 ppm in total amount of either one or not less than two kinds of Ti, Zr, V, Hf, Cr, Ca, Mg, Y and rare-earth elements, 1 to 30 ppm of oxygen and the remainder of Cu. A method of manufacturing therefor is described wherein the hot rolling is given to the ingot obtained by melting and casting in a nonoxidative atmosphere or in vacuum, then stretch processing and at least once or more times of intermediate annealing are repeated to finish to a fixed diameter of wire, and thereafter annealing is carried out under nonoxidative or reducible atmosphere to obtain desired mechanical characteristics.

REFERENCES:
patent: 4311522 (1982-01-01), Batra et al.
patent: 4676827 (1987-06-01), Hosoda et al.
patent: 4717436 (1988-01-01), Hosoda et al.

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