Brief Introduction to Wire and Cable Core Twisting Process

Introduction to the process of wire and cable core twisting

Wire and cable core twisting is a key link in cable production, involving the twisting of conductors and the cabling of insulated cores. The following is a basic overview of wire and cable core twisting to help you quickly understand its process flow and characteristics.

1. Conductor twisting

Conductor twisting of wires and cables is the process of twisting multiple single wires of the same or different diameters into an integral core in a specific direction and rule. Common twisted conductors include bare stranded wires (such as steel core aluminum stranded wire) and twisted cores in insulated wires and cables.

2. Cabling of insulated cores

Cabling is the process of twisting multiple insulated cores into a cable core in a regular manner. In addition to twisting, it also includes filling and taping processes to enhance the stability and mechanical strength of the cable.

3. Characteristics of twisted wire core

l Good flexibility: multiple filaments are twisted together, which increases the flexibility of wires and cables and facilitates processing, installation and laying.

l Strong stability: after twisting, each wire is in the extension zone and compression zone during the twisting process, avoiding deformation due to bending.

l High reliability: the defects of the twisted wire core are dispersed, reducing the risk of unevenness of a single wire core and improving the overall reliability of the cable.

l High strength: the stranded wire is stronger than the single wire of the same cross-section and is suitable for various occasions requiring high strength.

4. Common forms of wire core twisting

l Regular twisting: divided into concentric single-wire twisting and concentric stranded wire twisting. Common ones include ordinary twisted wire (such as copper and aluminum twisted wire) and combined twisted wire (such as steel core aluminum twisted wire).

l Irregular twisting: that is, bundled wires are twisted in an irregular manner, usually used in situations requiring higher flexibility.

l Compacted wire core: including fan-shaped compact wire core and round compact wire core, commonly used in power cables to ensure that the cable structure is compact and strong.

5. The significance and purpose of core twisting

l Improve flexibility: make wires and cables easier to bend and install, and solve the problem that a single wire is difficult to bend.

l Reduce eddy current loss: by reducing the cross-section of the wire, the transmission efficiency of the cable is improved and the eddy current loss is reduced.

l Optimize electrical and mechanical properties: ensure that the electrical performance meets the requirements, and at the same time have sufficient mechanical strength and flexibility to adapt to the use requirements of different environments.

Summary

The core twisting process of wires and cables not only improves the flexibility, stability and reliability of the conductors, but also ensures the strength and performance of the cables. Understanding these basic processes will help ensure the superior performance of wires and cables in practical applications.

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