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Stranded copper-plated aluminum cable, and method for its fabrication

By covering the aluminum core conductor with a copper intermediate layer and forming a nickel surface layer of appropriate thickness, the problem of limited application of aluminum conductors in the aviation industry is solved, and high-efficiency conductivity and corrosion resistance under aggressive conditions are achieved.

Inactive Publication Date: 2006-04-19
F S P.-1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(the document) does not state either the advantages of a strong nickel surface layer, nor the manner in which it is obtained

Method used

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  • Stranded copper-plated aluminum cable, and method for its fabrication
  • Stranded copper-plated aluminum cable, and method for its fabrication
  • Stranded copper-plated aluminum cable, and method for its fabrication

Examples

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Embodiment Construction

[0061] First refer to figure 1 , which shows the structure of one embodiment of the conductive wire 1 of the present invention. An aluminum core 2 covered with a copper intermediate layer 3 covered with a nickel surface layer 4 can be seen.

[0062] Aluminum constituting the core 2 may be pure aluminum or an aluminum alloy. A 99.5% aluminum alloy containing at most 0.10% silicon and at most 0.40% iron is preferred.

[0063] In aerospace or automotive industry applications, the wire may have a final overall diameter DF of about 0.51 mm to about 0.20 mm. However, other diameter values ​​may also be used, depending on desired properties.

[0064] The copper interlayer 3 can advantageously represent 15% of the volume of the wire. This produces a wire with the following properties: a density of about 3.60 kg / dm3 at 20°C and a resistivity of 2.78×10 -8 Ohmmeter, conductivity 60% to 64% IACS - typically 62% IACS, yield point 138 N / mm2 and minimum elongation 6%.

[0065] In orde...

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Abstract

An aluminium cable electric conductor, incorporating at least one strand with a base of conducting wires (1) with a core (2) of aluminium coated with an intermediate layer (3) of copper which is coated with a superficial layer (4) of nickel, has the following characteristics : (A) the superficial layer of nickel has a thickness (E) of between 1.3 mu m and 3 mu m; (B) the superficial layer of nickel has sufficient continuity to resist a continuity test in a bath of polysulphur for at least 30 seconds without the appearance of zones of attack of the copper, visible at an enlargement of times ten. An independent claim is also included for the production of this conductor.

Description

technical field [0001] This invention relates to copper-plated and nickel-plated aluminum or aluminum alloy wires. The invention relates more particularly to cables comprising at least one conductor having an aluminum or aluminum alloy core covered with a layer of copper which is itself covered with a layer of nickel. Background technique [0002] In the following description and claims, the term "aluminum" refers broadly to aluminum and its alloys. The term "conductor" refers to an elongated electrical conductor, the length of which is large relative to its cross-section and which is usually in the form of a metal wire. [0003] Aluminum-based electrical conductors are widely used to transmit electrical energy. Wires and cables with an aluminum core may include a sheath of insulating material that may bring together wires or individual strands to form the conductive core of the cable. [0004] Aluminum conductors for the transmission and distribution of electrical energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/02H01B5/08H01B13/00
CPCH01B13/02H01B1/026H01B13/0006H01B9/008H01B1/023
Inventor I·米歇尔L·萨尔瓦
Owner F S P.-1
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