Metal treatment – Compositions – Heat treating
Patent
1987-06-05
1989-09-05
Stallard, Wayland
Metal treatment
Compositions
Heat treating
C22F 118
Patent
active
048635278
ABSTRACT:
A process is disclosed for producing doped tungsten wire having a combination of relatively low strength and high ductility. The process involves swaging recrystallized rod to a diameter of from about 80 to about 125 mil, drawing this rod into wire having a diameter of from about 52 to about 62 mil, and stress-relief annealing the wire to impart the combination of low strength and high ductility to the wire when it is drawn to about 35 to about 37 mils.
REFERENCES:
patent: 1436717 (1922-11-01), Goucher
patent: 1461140 (1923-07-01), Ramage
patent: 3278281 (1966-10-01), Ehringer
Bloss Paul L.
Patrician Thomas J.
Schaeffer Gene T.
Castle Donald R.
GTE Products Corporation
Quatrini L. Rita
Stallard Wayland
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