Market background and development prospect of copper clad aluminum cable

    Nowadays, China's existing insulated wire and cablethe commonly used inner conductors are copper (Cu) and aluminum (AL), and most of them use copper as inner conductor. The main users of aluminum core cables are concentrated in Northeast, central and northwest regions. China is rich in aluminum resources and relatively deficient in copper resources. From the 1950s to the mid-1970s, aluminum core cable, aluminum bar, aluminum enameled wire and other products were widely used in China. At that time, the consumption of aluminum conductor accounted for more than 60% of the total consumption of conductors. From the 1980s to the 1990s, due to the reduction of the price difference between copper and aluminum, the inherent conductivity of copper was much better than that of aluminum. Coupled with the international copper industry The organization blindly advocates copper conductor, which hinders the popularization and application of aluminum core cable. After the reform and opening up, especially in the past 15 years, the rapid development of China's industrial infrastructure has consumed a lot of copper materials, mainly used in transmission, distribution and transformation facilities, household appliances, industrial equipment, military products, etc. Due to the scarcity of domestic copper resources, 40% ~ 50% of its copper products depend on imports. Coupled with the operation of international finance in recent years, the copper price has increased four times in five years, reaching the highest of 83000 yuan / ton. The soaring copper price has brought unprecedented pressure to the cable manufacturing industry, resulting in the increase of working capital and the narrowing of profit space. A considerable number of enterprises have changed their business and stopped production, which has made the cable manufacturing industry more competitive In order to adapt to the market competition, a large number of enterprises are competing to cut corners, which has caused hidden dangers to engineering users.
&Under the background of high copper price, our company successfully applied copper-clad aluminum conductor to low-voltage cable and developed copper-clad aluminum low-voltage cable. After a number of tests, the product makes full use of the advantages of copper and aluminum, and overcomes many disadvantages of aluminum, so the cost performance is quite high.
The rapid widening of price difference between copper and aluminum makes the economy of copper cable lose its price advantage. Taking the price of copper and aluminum in April 2008 as an example, the length of aluminum core cable produced with 10000 yuan is 10 times longer than that of copper core cable of the same specification. It can be seen that the economy of aluminum core cable is obviously superior to that of copper. Because aluminum metal has many mechanical and electrical properties defects, in order to overcome the disadvantages of aluminum cable, it is necessary to improve the price of aluminum cable To overcome these defects, our company developed and produced copper-clad aluminum conductor (CCA). The conductor adopts the method of "cladding welding drawing". The high-purity copper strip is concentrically coated on the outer surface of the aluminum rod wire. Through multi-step drawing and heat treatment, the wire diameter and mechanical and electrical performance technical requirements of the cable are made. The conductor has the advantages of good conductivity, high strength, strong solderability and easy processing of copper. It has the characteristics of low density, uniform copper layer density, high density and high ductility. Compared with pure copper conductor, it has obvious advantages: light weight, soft wire quality, low cost and saving copper resources. Copper clad aluminum conductor can be widely used in CATV signal transmission line, large capacity communication, network signal transmission line, low voltage power cable products; after the conductor is deeply processed into copper clad aluminum enameled wire (CCAW), it can be used in inductor coil, ballast coil, audio coil, television excitation deflection coil and other aspects; it can also be extruded into copper clad aluminum flat row, which can be used in electric power industry Distribution cabinet bus bar, bus duct, large transformer, electric welding machine, etc. The birth of copper-clad aluminum conductor has opened a new era for the rational collocation and utilization of copper and aluminum resources, which is in line with the national policy of promoting a resource-saving society. Therefore, copper-clad aluminum has a broad market development prospect.