In practical applications, tin-plated copper wires or silver-plated copper wires are divided into single-branch wires and multiple-branch wires, and the conductors of multiple-branch wires need to be twisted together according to a certain direction and a certain rule to form an integrated twisted conductor The core can be used.
Using more than ten years of wire production experience, Swell summarizes the common high-temperature wire conductor twisting methods as follows:
1. Concentric layer twist: also known as concentric regular twist for short. The single wire forming the twisted wire is sequentially layered layer by layer around the center of the twisted wire, the twisted direction of adjacent twisted layers is opposite or the same direction, and the center of the twisted wire may consist of a single or several round single wires.
2. Bundle Twisting: Twisted wires formed by multiple single wires twisted together in the same twist direction without following the twisting rules. The positions of the single wires are not fixed with each other, and the shape of the bundle wires is difficult to maintain a round shape. Although the individual wires constituting the stranded strand are also twisted around the center of the stranded wire, but the individual strands have the same direction and pitch, and it is difficult to separate the layers and orderly arrangement.
3. Concentric re-twisting: referred to as re-twisting. Its twisting form is the same as concentric layer twisting, except that the strands (bundled or concentric stranded strands as a unit) are used to replace the single wires in the concentric layer twisting.
Different conductor twisting methods directly affect the size of the outer diameter of the conductor, so in actual use, it must be ensured that the twisted outer diameter of each conductor must comply with UL or VDE specifications. For high-temperature wires produced by Dongguan Qinda Wire, the conductor twisting method mainly adopts concentric retwisting to ensure the stability of the conductor structure and the specification of the outer diameter of the conductor.