Manufacturing Technology And Characteristics Of Wires And Cables

Abstract: overview of wire and cable manufacturing process wire and cable manufacturing is completely different from most electromechanical products. Electromechanical products are usually assembled into multiple parts and then assembled into a single product,

Overview of wire and cable manufacturing process wire and cable manufacturing is completely different from most electromechanical products. Electromechanical products are usually assembled into multiple parts, and then assembled into a single product, and the product is measured in units or pieces. Wires and cables are based on length. All wires and cables are processed from the conductor, and the insulation layer, shielding layer, cable forming layer, protective layer, etc. are added layer by layer around the conductor to make wire and cable products. The more complex the product structure, the more layers.

1. Process characteristics of wire and cable manufacturing:

1. Large length continuous superposition combination production method large length continuous superposition combination production method has global and controllability for the production of wires and cables.

This involves and affects:

(1) The production process and equipment layout must reasonably discharge various equipment in the production workshop according to the process flow required by the product, so that the semi-finished products in each stage can be recycled in turn.

(2) Production organization management production organization management must be scientific, reasonable, thorough, accurate, strict and meticulous. Operators must carry out carefully according to the process requirements. Any problem in any link will affect the smoothness and stability of the process flow. Affect product quality and delivery.

(3) The production method of large-length continuous superposition combination of quality management makes any problem in any link in the production process immediately affect the quality of the whole cable. The more quality defects appear in the inner layer and the products cannot be found in time, the greater the loss.

2. There are many types of production processes and a large material flow. Manufacturing processes involve a wide range of process categories, from smelting and pressure processing of non-ferrous metals to chemical technologies such as plastics, rubber and paint; Textile technology, such as fiber wrapping and wrapping woven into metal materials and longitudinal wrapping of metal strips, welding metal forming process, etc. Various materials used in the manufacture of wires and cables are not only of many kinds, varieties and specifications, but also in large quantities.

3. Special equipment multi wire and cable manufacturing uses special production equipment with industrial processing characteristics to meet the structural and performance requirements of cable products, meet the requirements of large-length continuous and high-speed production, and form a series of special cable manufacturing equipment. Such as extruder series, wire drawing machine series, stranding machine series, winding machine series, etc. The manufacturing process of wires and cables is closely related to the development of special equipment and promotes each other.

2、 The main production process of wires and cables is carried out in the following ways:

Three processes of stretching, twisting and coating were completed. The more complex the model and specification, the higher the repeatability.

1. Metal pressure machining. Under the action of external force, the metal is forced to pass through the die (pressure wheel), and the cross section of the metal is compressed to obtain the required cross section shape and size. The technical treatment method is called metal drawing system. Key points of drawing process: monofilament drawing and strand drawing.

2. Stranding in order to improve the flexibility and integrity of wires and cables, winding more than 2 single wires together in the specified direction is called stranding. The stranding process is divided into conductor stranding, cable formation, braiding, steel wire armor and winding.

3. According to different performance requirements of wires and cables, special equipment shall be used to coat different materials on the outside of conductors.

Coating process:

A. Extrusion: rubber, plastic, lead, aluminum and other materials.

B. Vertical packaging: rubber, corrugated aluminum strip material.

C. Packaging: Ribbon paper tape, mica tape, alkali free glass fiber tape, non-woven fabric, plastic tape, linear cotton yarn, silk and other fiber materials.

D. Dip coating: insulating paint, asphalt, etc