Aluminum alloy cable brings new hope to China's wire and cable industry



  Good video transmission design is a very important part of video surveillance systems. If a well-built system uses cameras, lenses, monitors, and video recorders that produce or process high-quality images, but without a good transmission system, the images that are ultimately seen on the monitor will be unsatisfactory.

  Good video transmission design is a very important part of video surveillance systems. If a well-built system uses cameras, lenses, monitors, and video recorders that produce or process high-quality images, but without a good transmission system, the images that are ultimately seen on the monitor will be unsatisfactory. As the most important transmission medium, wire and cable products play an indispensable role in the security system data, video and audio transmission and power connection.

  With the improvement of China's industrialization development, the improvement of infrastructure, and the improvement of urbanization level, the cable industry is bound to mature, the industry is obviously polarized, and the industry concentration is increasing. Among them, the top ten in the United States has a market share of 67. In the % market, the top six in Japan have a market share of 65%, and the top five in France have a market share of 90%. Although the industry concentration is low, the cable industry market is in a scatter market, but the wire and cable industry has maintained a high growth, production efficiency has increased rapidly, product upgrades have accelerated, product structure has become more rational, and industry capital structure has become increasingly Diversification, the marketization process has obviously accelerated; especially in the coastal and economically developed regions, the wire and cable manufacturing industry has obvious advantages, and regional differences have further expanded.

  In the next five years, China's power grid will usher in a golden period, and the wire and cable industry will have a "good opportunity." With the national policy and the increasing investment of the State Grid Corporation in the smart grid, in line with the implementation of the national West-East Power Transmission and Power Grid Transformation project and the gradual advancement of urbanization construction, in the next five years, close to the transmission and distribution The relevant wire and cable market capacity will maintain a considerable growth rate of 8%-9% per year, and the wire and cable industry will usher in new opportunities.

  According to Yubo Zhiye Market Research Center, China's wire and cable industry has invested less than 1% of its sales in research and development, and more than 90% of domestic cable companies' production capacity is concentrated in low-end products. With the increasing demand for technological innovation, process innovation and material innovation, some domestic wire and cable companies have also increased their investment in innovation.

  China's wire and cable industry has always had low technical problems, mainly due to low production efficiency, low automation, high energy consumption, incomplete online testing, poor reliability, serious excess, poor quality, and threat to industry development. , after-sales service is not timely, etc., especially the industry technology innovation system has not yet formed, the independent design and development capabilities are poor, basically stay at the low level of surveying and mapping, imitation, has not fully grasped the design technology of wire and cable products, did not form wire and cable products The development mechanism of organically combining materials, processes and equipment makes it difficult to meet the development needs of the industry.

  No country dares to ignore the strong temptation of the Chinese market. The huge market formed by the sustained and rapid growth of the Chinese economy has attracted the attention of the whole world. All industries have focused their attention on the Chinese market. The same is true in the wire and cable industry. In the short period of reform and opening up, the huge production capacity of China's cable manufacturing industry has made the world look impressive. Worldwide, China's total wire and cable output has surpassed that of the United States, making it the world's largest wire and cable producer. The sustained and rapid growth of China's economy has provided a huge market space for cable products. As China's power industry, data communication industry, urban rail transit industry, automobile industry and shipbuilding industries continue to expand, the demand for wire and cable is also It will grow rapidly, and conductor aluminum alloy technology and aluminum alloy cable products are also introduced in China. In the future, the wire and cable industry has huge potential for development.

  However, China's wire and cable industry has long been hampered by the ills of some industries, and it is difficult to grow and develop. The output value of China's cable industry exceeds 1.2 trillion yuan, but the scale of enterprises is small, and the largest output value is only about 10 billion yuan. The scale is small, the innovation ability is poor, and the products can only be madly beaten in the low-end field. The overall average profit rate of the industry is less than 5%. In China, the pure buyer market has caused cable companies to have bad debts and bad debts. From time to time, a triangle crisis has also erupted. Most companies struggle in the fierce market competition.

  Technological advances have brought an excellent opportunity to China's wire and cable industry, that is, a new type of cable conductor material technology that began in the United States in 2006, namely conductor aluminum alloy technology and aluminum alloy cable products. American companies are brought into the Chinese market. After that, the Chinese aluminum alloy cable market was gradually detonated. Forecast data shows that in the next few years, even if China's aluminum alloy cable use level only reaches the current international level (30%), it will quickly form a huge market of up to 300 billion yuan. Such a huge market has undoubtedly attracted the attention of many companies in the industry.

  After the aluminum alloy cable entered China, it has not been able to open the market widely. One important reason is the actual performance. Although the aluminum alloy cable does not improve the conductivity of the pure aluminum cable, the bending, compressive creep and corrosion resistance of the aluminum alloy cable Other physical and mechanical properties have been greatly improved. Compared with copper cables, aluminum alloy cables have unparalleled advantages in terms of weight, price and engineering installation. In other words, in the words of the same electrical performance and better mechanical properties, aluminum alloy cables are more economical and have a wide range of applications.

  In such a huge market, many wire and cable companies want to get involved, but the Chinese cable industry, which is mainly composed of small and medium-sized wire and cable companies, has not been able to fully expand this market. This is due to the high technical content of aluminum alloy cables and production equipment. Large investment requires mature materials formula, production technology and talents. No matter whether it is a large enterprise or a small enterprise, this condition is not available for the time being. The production of conductive aluminum alloy materials requires a patented formula, which requires self-melting and casting to ensure the quality of the alloy material. Cable production also requires multiple production processes such as toughening and refining. Specialized technology, mature technology, specialized production and management personnel, and special production equipment are all required to produce qualified alloy cable products. Manufacturers with high industry thresholds, unprofessional, non-powerful and mature production conditions are difficult to participate.

  As a new technology, the aluminum wire and cable manufacturing industry has strong professionalism, high equipment requirements, and difficult technology and process. All copper cables start with conductor processing. Because the copper conductor is a single metal material, the material quality is easier to control. However, due to the different conductor materials, the production equipment, production technology and process of aluminum alloy cables are quite different from those of traditional copper cables. Need to invest in conductor alloy melting, conductor alloy material continuous casting and rolling equipment, technology, aluminum alloy cable cable production equipment, expertise, special production process. The production of aluminum alloy cable, the quality control is from the melting of the alloy material, after the equipment guarantee, strict process, technical control casting, forming a qualified conductor aluminum alloy rod. The quality assurance of aluminum alloy rods is a prerequisite for ensuring the quality of aluminum alloy cables. If the conductor aluminum alloy rod cannot be produced by itself, the quality of the rod material cannot be controlled at all, and the quality of the produced aluminum alloy cable cannot be discussed. Compared with traditional cable production, the equipment, technology and process requirements for alloy cable production are higher and more advanced. At present, domestic non-professional aluminum alloy cable manufacturers do not have these conditions and capabilities.

  The biggest benefit of aluminum alloy cables is cost savings. As we all know, the price difference of copper cables is large, which is mainly caused by the different raw materials used in the production process. The main raw materials for the production of copper cables are electrolytic copper, insulating materials and sheathing materials. At present, the electrolytic copper in the raw material market is about 50,000 yuan per ton, while the recovered mixed copper and recycled copper are only about 40,000 yuan per ton; the price of qualified insulating materials and sheathing materials is 8,000 to 10,000 per ton. The price of defective products is only 4,000 to 5,000 yuan per ton, and the difference is very different. In addition, the conductor cross section is not enough, good or bad copper doping, cable length is insufficient, etc., is also an important reason for the price difference. Cable qualified products are produced according to national standards. Non-standard products or defective products are not only raw materials, but also the cross-section and length of cables are not in line with national standards. The price of aluminum alloy cable products also varies. The reason is that the main raw materials of qualified aluminum alloy cables are in addition to the electrical properties of the international AA-8000 series aluminum alloy conductor materials and the electrical conductivity of the alloy conductors. Mechanical properties such as elongation, conductor flexibility, tensile strength, creep resistance, etc. Qualified aluminum alloy cable has a full range of products, each with flame retardant grades of cross-linked polyethylene insulation and flame-retardant jacket. The jacket does not contain heavy metals such as lead and cadmium, and the aluminum alloy is interlocked and armored. Although the aluminum alloy cable has a lot of propaganda and the concept is deeply rooted in the hearts of the people, there are not many domestically produced products. It is understood that at present, the manufacturers that can produce qualified alloy cables in China have only two American companies in China and a few domestic professional manufacturers of alloy cable intellectual property technology and equipment.

  In terms of cost price, aluminum alloy cable does not have much advantage compared with copper cable. The cost advantage of aluminum alloy cable over copper cable is mainly that the same weight material can produce cables of different lengths. There are many unqualified alloy cables on the market. If these cables fail, the conductor materials will not be qualified first. Secondly, because the manufacturer does not have core formula technology, mature alloy cable production technology and production process, the alloy cable products produced cannot be reached. Qualified alloy cable.