Procedure for forming small wires

Details Procedure for forming small wires Procedure for forming small wires

1974-10-02

1976-03-16

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

29419R, 29424, 29DIG11, B23P 1700

Patent

active

039436195

ABSTRACT:
A procedure for drawing ultrafine wires is disclosed which incorporates the steps of inserting a core wire of a selected material into a plurality of telescoped sacrificial sheaths, welding the ends of the core wire to the sheath and successively drawing the combination down to a predetermined diameter. The outside sheath is sacrificed by etching to free the proportionately reduced core wire. The core wire may be initially covered with Teflon to aid in the reduction and the Teflon is removed by exposure to heat.

REFERENCES:
patent: 2077682 (1937-04-01), Everett
patent: 2215477 (1940-09-01), Pipkin
patent: 2718049 (1955-09-01), Prache
patent: 3277564 (1966-10-01), Webber et al.
patent: 3394213 (1968-07-01), Roberts et al.
patent: 3540114 (1970-11-01), Roberts et al.
patent: 3591915 (1971-07-01), Roberts et al.
patent: 3807026 (1974-04-01), Takeo

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