1. Cable structure The vast majority of wire and cab […]
1. Cable structure The vast majority of wire and cable products are cross-section (cross-sectional) shape is exactly the same (ignoring the error caused by manufacturing), was a long product, which is due to the system or equipment as a constituent line or Coil and the use of the characteristics of the decision. Therefore, the analysis of the cable structure of the product structure, only from its cross-section to observe and analyze. The structural elements of wire and cable products, in general, can be divided into four main structural components of wire, insulation, shielding and sheathing, as well as filling elements and bearing elements. According to the requirements of the use of products and applications, and some product structure is extremely simple.
2. Cable material In a sense, wire and cable manufacturing industry is a finishing and assembly of materials industry. First, the amount of material is huge, the cost of materials in the cable products to account for the total cost of manufacturing 80-90%; Second, the type of material used, the variety is very high, particularly high performance requirements, such as conductor copper, copper purity More than 99.95%, and some products to use oxygen-free high-purity copper; Third, the choice of materials will be on the manufacturing process, product performance and service life to play a decisive impact. At the same time, the benefits of cable manufacturing enterprises and materials selection, processing and production management can be scientifically saved materials are closely related. Therefore, in the design of wire and cable products must be used with the selection of materials at the same time, the general use of several materials, through the process and performance screening test to determine. Cable products with the use of materials and functions, can be divided into conductive materials, insulation materials, protective materials, shielding materials, fill materials. But some of these materials are common to several structural parts. Especially thermoplastic materials, such as polyvinyl chloride, polyethylene and so on as long as the change part of the ingredients can be used in the insulation or jacket. Cable materials used in the manufacture of materials involved in a wide range of categories, variety specifications (grades) particularly large.