Method for manufacturing copper coated aluminum dual-core flame-retardant flexible electric cable

Abstract

The invention discloses a copper-clad aluminum two-core flame retardant flexible cable and a manufacturing method thereof. The method comprises the steps that: a copper-clad aluminum conductor is madeinto a single conductive wire core; the single conductive wire core is processed into a conductive wire core provided with a semi-round section; an insulation process is carried out to the conductivewire core provided with the semi-round section, and an insulation process for forming an insulation wire core provided with an insulation layer is carried out; a cable-froming process is carried outto two insulation wire cores provided with insulation layers, thereby forming a cable yarn; plastic is extruded on the cable yarn so as to form a flame retardant restrictive coating, wherein, the stepthat the copper-clad aluminum conductor is made into the single conductive wire core comprises the steps that: a wire-drawing machine is utilized to draw the copper-clad aluminum conductor into a single conductive filament; an annealer is utilized to carry out an annealing process to the single conductive filament; a wire-bunching machine is utilized to bunch a plurality of annealed single conductive filaments into braided wires; a wire twisting machine is utilized to twist a plurality of braided wires into the conductive wire core. The cable of the invention has the advantages of low copperconsumption, light weight and low cost.

Description

technical field [0001] The invention relates to wire and cable technology, in particular to a copper-clad aluminum two-core flame-retardant flexible cable and a manufacturing method thereof. Background technique [0002] For the concept of copper-clad aluminum, wire and cable manufacturers are no strangers, that is, the structure of each conductive monofilament that constitutes the conductive core is processed into the outer layer of copper and the inner layer of aluminum, which can save a lot of belongings. Copper, a strategic resource, can make copper play its biggest role. In the literature such as Chinese patent literature, there are many reports in the past, such as: the copper-clad aluminum communication cable introduced by the Chinese patent authorization announcement number CN2881898, the copper-clad aluminum data communication cable disclosed by CN2881899, and the copper-clad aluminum conductor communication cable recommended by CN200979818Y , CN101060024A public c...

AI Technical Summary

Problems solved by technology

[0003] However, due to the small tensile force and low strength of aluminum, for copper-clad aluminum conductors with small diameters or small amounts of copper, the copper-clad aluminum conductors are easily broken and the processing difficulty is significantly increased, or even impossible to process.

However, if the diameter is increased or the amount of copper used is increased, the cable will be hardened, which is not conducive to laying

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