Metal deforming – By pulling workpiece through closed periphery die – With heating or cooling
Patent
1975-01-30
1976-04-27
Mehr, Milton S.
Metal deforming
By pulling workpiece through closed periphery die
With heating or cooling
148 115R, B21C 900
Patent
active
039525716
ABSTRACT:
The present invention relates to a method of manufacturing aluminum wires for communication cables, insulated electric wires, etc., from aluminum for electrical purposes or as an aluminum alloy for electric conductors containing various additive elements, which is characterized in that cold working of 80% or more is given to the product after hot working, then low temperature intermediate annealing is carried out at a temperature of 100.degree. - 280.degree.C, then cold drawing of 50% or more is given and a continuous annealing is carried out. A manufacturing method is thus provided for aluminum wires for communication cables, insulated electric wires, etc., having excellent overall properties of strength, electrical conductivity, ductility, etc., which is suitable for the modernized high-speed manufacturing line and which is superior with respect to productivity and workability.
REFERENCES:
patent: 1178863 (1916-04-01), Lauber et al.
patent: 1931913 (1933-10-01), Ennor
patent: 2670309 (1954-02-01), McClintock
patent: 3663216 (1972-05-01), Hunsicker
patent: 3716419 (1973-02-01), Boutin
patent: 3807016 (1974-04-01), Schoerner
patent: 3826690 (1974-07-01), Bleinberger et al.
Higashimoto Takenobu
Sato Ken'ichi
Yokota Minoru
Mehr Milton S.
Sumitomo Electric Industries Ltd.
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