Production method of large-size special-shaped aluminum conductive core cable

Abstract

The invention relates to the technical field of wire cable production and processing and discloses a production method of a large-size special-shaped aluminum conductive core cable. The method comprises the following steps of: drawing thick aluminum rods into relatively thin aluminum filaments, then carrying out annealing on the aluminum filaments, coating wire drawing oil on the surface layers of the aluminum filaments after the annealing, carrying out layered stranding on the aluminum filaments, extruding an insulating layer, carrying out cabling, lapping an armor layer, extruding an external sheath layer and the like. According to the invention, after the aluminum rods are drawn into the aluminum filaments, annealing is carried out on the aluminum filaments, so that the elongation of the aluminum filaments is increased, and the aluminum filaments are not liable to break in the stranding process; after the annealing, the wire drawing oil is coated on the external surfaces of the aluminum filaments, so that the aluminum filaments can be smoothly discharged from a wire disk, and the broken wire phenomenon is avoided; in addition, the bulging and bursting phenomena of an insulating core, which are caused by that an internal conductor of a conductive core jumps out to the external layer in the cabling process, are prevented, so that the produced cable is rounding, the production standard requirements of the wire cable are met, and the quality of the product is effectively improved.

Description

technical field [0001] The invention relates to the technical field of production and processing of electric wires and cables, in particular to a production method of large-size special-shaped aluminum conductive core cables. Background technique [0002] The power cable structure consists of a conductive core, an insulating layer, a filling material, an inner sheath, an armor layer and an outer sheath. The production process is as follows: extrude the four conductive cores produced with insulating layers and then cable them together. If the insulated cores are round, filling materials must be added to the gaps between the insulated cores when forming cables. Then extrude the inner liner, wrap the armor layer and extrude the outer sheath. In order to avoid the use of filling materials, greatly reduce the outer diameter of the cable to reduce the consumption of the inner sheath, armor and outer sheath, thereby greatly reducing the production cost of the cable, the conductive...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production method of large-size special-shaped aluminum conductive wire cores, so as to solve the problem that the monofilament is easy to break during the production of large-size special-shaped aluminum conductive wire cores, and the inner conductor of the conductive wire cores is easy to jump out when the insulated wire cores are cabled. The problem that the outer layer prevents cabling

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