Process for producing insulated rectangular wire

Details Process for producing insulated rectangular wire Process for producing insulated rectangular wire

1984-05-08

1985-11-12

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

29825, 72 46, 72206, 72278, 156 51, H01B 1306

Patent

active

045525994

ABSTRACT:
A process for producing an insulated rectangular wire adapted for edgewise winding. A round wire of copper, copper alloy, aluminum or aluminum alloy is drawn through a die in a tandem-extrusion apparatus. The drawn wire is then electrolytically cleaned, following which an insulating coating is applied to the cleaned surface. The insulating coating is baked, and finally the insulated wire is subjected to at least one cycle of rolling. Preferably, the drawing is done with a single die and capstan to thereby remove any surface defects in the conductor having a size of 3 .mu.m or greater. The capstan should be made of a material softer than the material of the conductor. Further, it is preferred that fresh lubricating oil containing no metal dust be applied to the surface of the conductor during the drawing process.

REFERENCES:
patent: 3779055 (1973-12-01), Goyffon
patent: 3811311 (1974-05-01), Barone et al.
patent: 3874076 (1975-04-01), Tsukamoto et al.
patent: 3976815 (1976-08-01), Brekle
patent: 4386513 (1983-06-01), Doudet
patent: 4439256 (1984-03-01), Meserve
patent: 4473716 (1984-09-01), Jesseman
patent: 4476192 (1984-10-01), Imai et al.

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