Method of manufacturing electric cable having compressed mineral

Details Method of manufacturing electric cable having compressed mineral Method of manufacturing electric cable having compressed mineral

1983-01-04

1985-01-22

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Electrical device making

72700, H01R 4300

Patent

active

044943075

ABSTRACT:
A method of manufacturing electric cable having compressed mineral insulation and a titanium sheath and at least one titanium inner conductor, said method including preparing a titanium sheath preform whose diameter is very much greater than that of the cable, then lengtening the preform by successive hammering and/or laminating operations between which the preform is annealed, wherein the titanium used contains not more than: 0.03% nitrogen; 0.25% oxygen; 0.015% hydrogen; 0.10% carbon and 0.30% iron; wherein its tensile strength is not more than 5.40 N/mm.sup.2 wherein its breaking strain is at least 22%, and wherein annealing operations are performed in a rare gas atmosphere at a temperature lying between 600.degree. C. and 640.degree. C.

REFERENCES:
patent: 3394036 (1968-07-01), Parris
patent: 3969155 (1976-07-01), McKeighen
patent: 4224085 (1980-09-01), Brendel et al.

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