High strength copper coated aluminum wire

Abstract

This invention relates to a high strength copper-clad aluminium conductor, a copper layer wraps the surface of a MgAl alloy core coaxially and combines with it metallurgically, in which, the Mg content in the MgAl alloy core is 1.0%- 1.6%, Fe is smaller than 0.12%, Si is smaller than 0.08%, Cu is smaller than 0.002%, Zn is smaller than 0.008%, the rest is Al, said copper layer is 10-15% of the volume of the MgAl alloy core, which is advantaged that this invented high strength copper-clad Al conductor is mainly used in the weave of coaxial cable shield wires replacing that of the original pure Cu wires and the technology target is better than the stipulation standard for shield transmission materials in our national electronic industry.

Description

technical field [0001] The invention relates to the field of cables such as connecting wires and flat wires, and mainly relates to a copper-clad aluminum wire. Background technique [0002] Audio, video cables, computer cables, audio coils and car cables, etc. require materials with good electrical conductivity, signal transmission properties and mechanical properties. Originally, pure copper wire braided or aluminum alloy wire was generally used for coaxial cables. The braiding of shielded wire, but the density of pure copper wire is high and the production cost is high; and ordinary aluminum alloy wire cannot meet the high tensile strength and high elongation at the same time; copper-clad aluminum wire is made of inner core aluminum alloy wire. The rod is tightly wrapped with precision-rolled copper strips, welded and stretched to form copper-clad aluminum thin wires. Its performance and price are between pure copper wires and aluminum-magnesium alloy wires, and it has bee...

AI Technical Summary

Problems solved by technology

[0002] Audio and video cables, computer cables, audio coils and car cables, etc. require materials with good electrical conductivity, signal transmission performance and mechanical properties. In the past, pure copper wire braiding or aluminum alloy wire was generally used for coaxial cables. Weaving of shielded wires, but the density of pure copper wires is high and the production cost is high; while ordinary aluminum alloy wires cannot meet the requirements of high tensile strength and high elongation at the same time; copper-clad aluminum wires are made of inner core aluminum The rod is tightly wrapped with a fine-rolled copper strip for welding and stretching to form a thin copper-clad aluminum wire. Its performance and price are between pure copper wire and aluminum-magnesium alloy wire, and it has been widely used by enterprises.

However, since the copper-clad aluminum core currently available on the market is generally made of pure aluminum, its tensile strength is low, and it is easy to break during the process of weaving the shielding net.

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