Name of product structure and material of cable

(1) the wire: the most basic essential main component products are current orelectromagnetic wave information transmission function.

Main material: the wires are electrically conductive wire core referred to, made by conductive properties of copper, aluminum, copper clad steel, copper clad aluminumand other non-ferrous metal with excellent, optical fiber as the wire.

A bare copper wire, tinned wire; single branch, strand; twisted tinning line.

(2) the insulating layer is coated components: plays a role in wire electrical insulationperiphery. That can ensure the transmission of current or electromagnetic waves,light waves travel along the wires and not only flow to the outside, the conductor has the potential (i.e. potential on the formation of the surrounding objects, namely thedifference voltage) can be isolated, i.e., both to ensure the normal transmission function of the wire, but also to ensure that the external object and personal safety.Conductor and the insulating layer is composed of cable products (except the bare wire) two basic components must have. Main material: PVC, PE, XLPE, PP, F,polypropylene fluorine plastics, rubber, paper, mica tape

(3) filling structure: a lot of wire and cable products are the multi core, these insulating wire core or lines on the cable (or packet multiple cable), a shape is not round, two is an insulating cable core has the very big space, and must join the filling structure in the cable, filling knot the structure is to make the displayport cable outer diameter relative roundin favor of bag, extrusion sheath. Main material: PP rope

(4): is a kind of shielding cable products in the field and outside electromagneticisolation components; cable products from different lines in its internal (or group) toalso need mutual isolation between. The shielding layer can be said to be an"electromagnetic screen". The conductor shielding of high voltage cables andinsulation shielding to electric field distribution homogenization. Main material: bare copper wire, copper clad steel wire, tinned copper wire

(5) layer of protection: when the electric wire and mini displayport cable products running in differentenvironments, must have on the overall product, especially for the insulating layerprotective component, which is the protective layer.

Because the requirements of insulating material has excellent variety of electrical insulation properties, must demand extremely high purity and impurity content of materials; often fail to take into account their on the outside of the protection ability,so for the outside world (i.e., installation, application occasions and in variousmechanical force) bearing or resistance, resistance to atmospheric environment,chemical resistance or oil, to prevent biological invasion, and reduce the fire hazardsmust be composed of various protective layer structure to bear. Main materials: PVC,PE, rubber, aluminum, steel strip

(6) the tensile element: the typical structure is a steel core aluminum stranded wire,fiber optic cable and cable etc.. In a word, the development of special fine, soft, alsorequires repeated bending, distorting the use of products, the tensile element plays a major role in.

Main material: steel wire

Specifications of wire and cable

The main features of the products are: different specifications, a wide range of applications, the use of voltage 1kV and below more special occasions, in the face ofconstant derived from the new products, such as refractory cable, flame-retardantcable, low smoke zero halogen / low smoke and low halogen cable, anti termite, antimouse cable, oil resistant / cold / temperature / wear cable, medical / agricultural /mining cable, thin wire etc.. With the rapid development of communication industry,from the past simple telephone and telegraph cable development to thousands of words on the cable, coaxial cable, optical cable, data cable, or even combinedcommunication scart splitter cable etc.. This kind of product structure is usually small and uniformsize, high precision manufacturing. Winding wires is a conductive metal wire insulation layer, is used for winding coil or winding of electrical products. Workthrough an electric current produces a magnetic field, or cutting magnetic line of forceto generate induction current, realize the transformation of electricity and magnetism,so it become the electromagnetic wire. Wire and cat6 cable products is the vast majority ofsection (cross-sectional) have identical shapes (ignoring the error caused by themanufacture), is a long strip shape products, this is because in the system or deviceis composed of lines or coil and used as the feature of the decision. So the study ofstructural analysis of the cable product composition, only need to observe and analyze from its cross section.

Structural element of wire and cable products, generally can be divided into wire, an insulating layer, the shielding and protecting layer of the four main structuralcomponents and the filling element and a carrier element etc.. According to the service requirements of products and applications, some products structure is very simple.

The introduction of electric wire and cable

Wires and cables used to transmit electric (magnetic) energy, information and realize electromagnetic energy conversion of wire products, wire and cable generalized also referred to as the cable, special cable refers to insulated cable, it can be defined as:aggregate is composed of the following parts; one or a plurality of insulated wire core,and their respective may have the coating layer, the total protective layer and theouter protective layer, the cable can also have additional no insulation of conductor.For the transmission of electric (magnetic) energy, information and realize electromagnetic energy conversion of wire products.

General electric wire and 21 pin scart cable is also referred to as the cable, special cable refers toinsulated cable. It can be defined as, aggregate is composed of the following parts:one or a plurality of insulated wire core, and their respective may have a coating layer, the total protective layer and the outer protective layer, the 21 pin flat scart cable can also have additional no insulation of conductor. The main features of products: pure metal conductor, no insulation and sheath layer, such as steel core aluminum stranded wire, copper bus, electric locomotive line; processing technology is the pressure processing, such as melting, rolling, drawing, stranding / pressing twist; products are mainly used in suburban, rural, user the main line, switch cabinet etc..

The types of cable conductor

Wire and cable conductor by one or a plurality of mutually insulated and outer insulation protective layer made of, will power or information transmitted from one point to another by wire. The conductor is its core, lost the conduction effect of conductor, cable will lose its value. In the copper and aluminum and other metal conductor as the representative of the "traditional forces, how to resist the" to "aluminum alloy, non fiber, carbon fiber and other new materials" representative of the "new power", it becomes more and more attractive to look forward to. At present, the metal conductor common according to the conductive arrangement, followed by gold, silver, copper, aluminum, iron (steel), but considering the application to the wire and cable connectors conductor on raw material costs and other factors, copper and aluminum are the high cost, especially copper, gold, silver, price is low, conductivity better than aluminum, is the most commonly used cable conductor. Copper conductor with the national standard cable of the oxygen free copper, electric wire and cable industry is a heavy material light industry, according to the relevant statistics show that, wires and cables with copper content of copper consumption accounted for about 60-70%. Copper conductor is a core component of copper core cable, regardless of how changes in external technology, progress, copper conductor costs can account for the total cost of cable head, reportedly as high as more than 75%. With the development of China's copper resources are depleted and the international copper prices rise, although the copper wire and crossover ethernet cable conductor is still in the "big brother", but people have begun to actively seek alternatives. Aluminum mineral resources in China is extremely rich, is one of the world's ten largest bauxite resources in the country, to maintain reserves of 25.03 tons of resources. As early as in 1957, our country has put the "Al generation copper" identified as national technology policy. In twentieth Century six, seventy time, due to copper as strategic materials subject to regulations of trade, a large number of domestic aluminium is used as the main material of conductor transmission cable. However, compared with the copper conductors, pure aluminum conductor conductor resistivity, low melting point, poor oxidation resistance, poor mechanical strength, cause problems often overheat, corrosion, short circuit and so on, in the early ninety's, he gradually withdrew from the low-voltage power distribution market, but there are still used in high voltage transmission field.