Production process of paper wrapped copper wire

Paper wrapped copper wire is a common type of wire and cable product used for transmitting electricity, signals, etc. The production process of paper wrapped copper wire mainly includes multiple steps such as material selection, drawing, paper wrapping, insulation, and winding. This article will provide a detailed introduction to the production process of paper wrapped copper wire.

The first step is material selection. The materials for paper wrapped copper wire mainly include copper wire and insulating paper. High purity copper wire can improve conductivity and conductivity, and commonly used copper wire materials include pure copper, tin plated copper, and nickel plated copper. Insulation paper usually refers to a layer of paper that coats or wraps insulation material on the surface of copper wire. The selection of insulation paper mainly considers its insulation performance and heat resistance.

Drawing is one of the key steps in the production of paper wrapped copper wire. The drawing process can be carried out using a cone pulling machine, which gradually reduces the diameter of the copper wire. During the drawing process, it is necessary to pay attention to controlling the tension and speed of the machine to avoid copper wire breakage or uneven diameter formation.

Paper wrapping refers to wrapping insulation paper on the surface of copper wire. The purpose of paper wrapping is to increase the thickness of the insulation layer, improve the insulation performance and the voltage resistance of the wire. There are two methods for wrapping paper, one is the wet wrapping method, which involves adding moisture during the wrapping process to make the paper wet and soft, making it easier to cover the copper wire; Another method is dry packaging, which means no water is added during the paper packaging process. Wet wrapping method is suitable for large diameter copper wire, while dry wrapping method is suitable for small diameter copper wire.

Insulation is another important step in the production of paper wrapped copper wire. The insulation layer is usually coated with insulating paper and adhesive, with the aim of improving the insulation and voltage resistance performance of paper wrapped copper wires. Adhesive coating can use either hard or soft adhesive, and the hard adhesive insulation layer has high hardness and strength, making it suitable for high-temperature situations; The soft rubber insulation layer has good flexibility and pressure resistance, and is suitable for general occasions.

Finally, there is winding. Winding is the process of wrapping paper wrapped copper wire around a steel pipe or wooden shaft, and winding it into a specified roll shape through the rotation of a machine. The purpose of winding is to facilitate storage and use. During the winding process, it is necessary to control the tension and speed of the winding to ensure the neatness and tightness of the paper wrapped copper wire.

The above is a brief introduction to the production process of paper wrapped copper wire. Paper wrapped copper wire, as a common wire and cable product, has good conductivity and insulation performance and is widely used in fields such as power and communication. Every step in the production process requires precise control to ensure product quality. With the advancement of technology and the increasing demand, the production process of paper wrapped copper wire is also constantly being updated and improved to increase production capacity and reduce costs.