Wire and cable basic knowledge wire and cable manufacturing technology

Wire and cable are used to transmit electrical (magnetic) energy, information, and wire products that convert electromagnetic energy. Generalized wire and cable are also referred to as cables. A narrow sense cable is an insulated cable. It can be defined as an assembly consisting of: One or more insulated cores, and their respective possible cladding, total protective layer and outer sheath, and the cable may also have additional uninsulated conductors. Wire products used to transfer electrical (magnetic) energy, information, and electromagnetic energy conversion. What is the wire and cable manufacturing technology ? Following Xiaobian look at it.

Wire and cable manufacturing technology

1. Large-length continuous superposition combined production method

Large-length continuous superposition of combined production methods, the impact on the production of wire and cable is global and control, which involves and affects:

(1) Production process and equipment layout

All kinds of equipment in the production workshop must be reasonably discharged according to the process flow required by the product, so that the semi-finished products in each stage are transferred in turn. The equipment configuration must consider the production efficiency to be different and balance the production capacity. Some equipment may have to configure two or more units in order to balance the production capacity of the production line. Therefore, the rational selection and combination of equipment and the layout of production sites must be balanced based on the product and production volume.

(2) Production Organization Management

The production organization and management must be scientific, reasonable, accurate, and meticulous. The operator must be meticulously executed according to the process requirements. Any problems in any link will affect the smoothness of the technological process and affect the quality and delivery of the product. Especially for multi-core cables, if the length of a certain pair or basic unit is short, or the quality is problematic, the entire length of the cable will be insufficient, resulting in scrap. Conversely, if a unit is too long, it must be sawn for waste.

(3) Quality Management

Large-length continuous superimposed combination of production methods, so that any part of the production process, an instant problem, it will affect the quality of the entire cable. The more the quality defect occurs in the inner layer, and the failure to discover the termination of production in time, the greater the damage caused. Because the production of wires and cables is different from that of assembled products, they can be dismantled and replaced with other parts; the quality of any component or process of wires and cables is almost irretrievable and remediable for this cable. Afterwards, the treatment is very negative. It is not a matter of shortening or downgrading, or scrapping the entire cable. It cannot be opened and reinstalled.

The quality management of wire and cable must go through the entire production process. The quality management and inspection department must carry out a thorough inspection of the entire production process, operator self-inspection, and mutual inspection of the upper and lower processes. This is an important guarantee and means for ensuring product quality and improving the economic efficiency of enterprises.

2. Many types of production technology, large material flow

Wire and cable manufacturing involves a wide range of processes, from smelting and pressure processing of non-ferrous metals to chemical technologies such as plastics, rubber, and paint; textile technologies such as wrapping and weaving of fiber materials; and wrapping and metal strips for metal materials. The vertical package, welding metal forming process and so on.

The various materials used in wire and cable manufacturing are not only of different types, specifications, and specifications, but also large quantities. Therefore, the amount of various materials, reserves, batch cycle and batch must be approved. At the same time, the dismantling, recycling, recycling, and waste disposal of waste products are an important part of management, and do a good job in managing material quotas and paying attention to conservation.

In the production of wires and cables, from the entry and exit of raw materials and various auxiliary materials to the storage, the flow of semi-finished products in each process is transferred to the storage and delivery of products, and the material flow rate is large. It must be rationally distributed and dynamically managed.

3 special equipment

The production of wire and cable uses special production equipment with the technological characteristics of the industry to meet the requirements of the structure and performance of cable products, meet the requirements for large-length continuous and high-speed production, and thus form a series of special equipment for cable manufacturing. Such as extrusion machine series, cable machine series, stranding machine series, around the charter series.

The manufacturing process of wire and cable is closely related to the development of special equipment and promote each other. The new process requirements promote the generation and development of new special equipment; in turn, the development of new special equipment has boosted the promotion and application of new processes. Such as drawing, annealing, extrusion series line; physical foam production line and other special equipment, promote the development of wire and cable manufacturing process and improve, improve the cable's product quality and production efficiency.

The main technology of wire and cable

Wire and cable are manufactured through three processes: drawing, stranding, and cladding. The more complex the model specifications, the higher the repeatability.

1. Draw

In metal press working, the technical process of forcing the metal through a die (pinch roller) under the action of an external force, compressing the cross-sectional area of ​​the metal, and obtaining the required cross-sectional shape and dimensions is called metal drawing.

Drawing process points: monofilament drawing and strand drawing.

2. Stranded

In order to improve the flexibility and overall degree of wire and cable, two or more single wires are intertwined in the specified direction and are called twisted.

Stranding process points: conductor stranding, cable, weaving, wire mounting and winding.

3. Coating

According to different performance requirements for wire and cable, special equipment is used to coat different materials on the outside of the conductor. Coating process:

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

B. Vertical package: rubber, wrinkle aluminum strip material.

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

D. Dipping: Insulating paint, asphalt, etc.

Editor's summary: The above is the relevant content of wire and cable manufacturing technology , I hope to help you, more decoration information, all in this site, so stay tuned.

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