Round compressing process of stranded aluminum conductor

Abstract

The invention relates to a round compressing process of a stranded aluminum conductor. Two round compressed stretching dies are continuously adopted on the same stranded layer without speed-change traction between, the wire-cable stranded aluminum conductor is roundly and basically compressed, stretched and deformed on aluminum filaments on a surface layer, and the aluminum filaments on the outerlayer subjected to primary stretching and deforming have smaller cross sections and are slightly longer than aluminum wires on an inner layer so that a lightly loosening phenomenon occurs in the filaments on the surface layer between the stretching dies, which is convenient to repair broken filaments. In addition, because of hard aluminum filaments, the aluminum filaments on the outer layer are loose and have weak tension compared with the aluminum filaments on the inner layer, the aluminum filaments on the outer layer and the inner layer can slightly slide, the lightly loosening phenomenon disappears after the aluminum filaments pass through the secondary stretching die, and stranded aluminum wires are compact and round.

Description

technical field [0001] The invention belongs to the field of wire and cable conductor processing, and in particular relates to a circular compacting manufacturing process of stranded conductors. Background technique [0002] At present, the circular compaction of wire and cable stranded conductors is processed by drawing dies, and generally no lubricant is used to avoid harm to the conductor or insulation. Therefore, in the process of circular compaction of stranded conductors Single wire breakage is unavoidable, especially for aluminum conductors, because the twisted round compaction of aluminum conductors is carried out in a hard state, and when a higher compaction coefficient is used to ensure good electrical properties, it is more likely to occur Broken wire phenomenon, and the gap after the single wire breaks will be filled by other deformed single wires in this layer, which brings great difficulty to repair the broken wire, or even cannot repair it, resulting in the fa...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a circular compacting process for stranded aluminum conductors, which overcomes the shortcomings of the previous circular compacting method of stranded aluminum conductors for wires and cables, which are easy to break and difficult to repair.

Images