Aluminum covered steel wire

Abstract

The invention discloses an aluminum cladding steel wire, which comprises a steel core and the aluminum cladding coated on its periphery. The external contour on the cross section of the aluminum cladding is provided with an upper and a lower sideline in concentric circles, as well as the left sideline with flanged edge and the right sideline with emargination. Taking the center of the said concentric circles as the center, the left sideline turns a central angle of alpha to table its flanged edge with the emargination of the right sideline. Another aluminum cladding steel wire can also be adopted, which comprises a steel core and the aluminum cladding coated on its periphery. The external contour on the cross section of the aluminum cladding is provided with an upper and a lower sideline in concentric circles, as well as the left and right sidelines with emargination or the left and right sidelines with flanged edge. The left and right sidelines with emargination or the left and right sidelines with flanged edge are all arc lines or break lines, which are symmetrical by the joint line connecting the midpoints of the upper and lower sidelines. The neighboring two units of the invention are matched by their concave and convex. After they concentrically intertwist with each other, the interstice between each two neighboring aluminum cladding steel wires is small with high compactedness and has long service life avoiding corrosion cause by hydrops.

Description

technical field [0001] The invention relates to an electric optical fiber composite overhead ground wire and a ground wire for power transmission line engineering, in particular to an aluminum-clad steel wire. Background technique [0002] At present, the unit of power optical fiber composite overhead ground wire and aluminum-clad steel stranded wire adopts aluminum-clad steel wire with a circular cross-section. About 75%, it is easy to freeze in the heavy ice area and affect the use. When the diameter of the twisted wire is constant, it meets the electrical performance requirements but cannot meet the mechanical performance requirements, and the anti-lightning performance is poor. When the outer layer of the twisted wire is broken by lightning, the strands will be broken due to vibration and cause a short circuit accident to the ground. Since the aluminum used in the production of round-section aluminum-clad steel wire is electrical aluminum, the corrosion resistance is lo...

AI Technical Summary

Problems solved by technology

[0002] At present, the unit of power optical fiber composite overhead ground wire and aluminum-clad steel stranded wire adopts aluminum-clad steel wire with a circular cross-section. About 75%, it is easy to freeze in the heavy ice area and affect the use

When the diameter of the stranded wire is constant, it meets the electrical performance requirements but cannot meet the mechanical performance requirements, and the lightning resistance performance is poor. When the outer layer of the stranded wire is struck by lightning and the strands are broken, the loose strands occur due to vibration and cause a short circuit accident to the ground.

Since the aluminum used in the production of round-section aluminum-clad steel wire is electrical aluminum, the corrosion resistance is low when used in coastal and industrial areas, which affects the service life

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