Development and Characteristics of Modern Aluminum Alloy Extrusion Industry

[China Aluminum Industry Network] 1. The world aluminum extrusion industry has entered a new period of development

Since 1990, the global aluminum industry has entered a new period of development. With the advancement of science and technology and rapid economic development, driven by the global economic integration and the management concept of vigorously increasing the rate of return on investment, the world’s aluminum industry has stepped up efforts to adjust the structure, and on the other hand, it has conducted a research and development of technology. Great march into the boom. The scientific and technological content of products has been improved, and the scope of application has been expanded; resources and energy consumption have been greatly reduced, and environmental protection has improved; costs have been greatly reduced, and economic benefits have improved; aluminum has enjoyed a rising status in people's lives and various economic sectors, and its usage has increased rapidly. Aluminum extrusions (tubes, rods, profiles, wire rods) have always been the aluminum alloys next to aluminum rolled materials (plates, strips, strips, and foils). In terms of structure, decoration and function, extruded aluminum alloys, especially aluminum alloys, are a "never fail" material. With the advancement of science and technology and economic development and improvement of people’s living standards, aluminum alloy profiles, pipes, rods, and wire rods have been used in such sectors as construction engineering, aerospace, transportation, modern automobiles, electronic appliances, petrochemical energy, and machinery manufacturing. widely used. Especially in the modern transportation and other fields that are in urgent need of light weight, large and medium-sized aluminum alloy industrial profiles have achieved rapid development in recent years. According to incomplete statistics, among the global aluminum extrusion materials in 2010, 14.5 million tons of profiles (about 80% of extrusion materials) and about 1 million tons of large and medium-sized industrial profiles. In spite of this, the aluminum alloy extruded material still grew at an average annual rate of 5%, the industrial profile increased at a rate of 8%, and a large number of large-scale, modern aluminum extrusion material manufacturers (groups) were established.

2. China's aluminum extrusion industry develops in the direction of modernization and sets off the third development tide

China's aluminum processing industry is in the third high-speed sustainable development. After decades of development and accumulation, especially after the baptism of the previous and second development climaxes, China's aluminum processing industry has completed the development process from small to large, from low to medium and advanced, and has become a veritable aluminum. Large-scale industries, large aluminum processing countries, and large aluminum extrusion countries are advancing toward the aluminum industry, aluminum processing power, and aluminum extrusion power.

In 2010, China produced more than 18 million tons of primary aluminum, ranking the first in the world for nine consecutive years. Aluminum production rose from less than 300,000 tons in 1980 to 16.8 million tons in 2010, surpassing that of the United States, and leaping to the top of the world, and is now much larger than the average annual growth rate (5% to 6%) of the world. (18% to 22%) increase in speed. In 2010, China's aluminum extrusion capacity reached 10 million tons, and actual production reached 9.5 million tons, which greatly exceeded that of the United States and became a net exporter. The characteristics of aluminum extrusion industry in China are as follows.

(1) A large number of large and medium-sized modern extrusion companies have been established, with significant growth in production capacity and output. From 1980 to the beginning of this century, a large number of extrusion companies, mainly producing architectural aluminum, were built. Since 2003, a wave of large- and medium-sized extrusion presses and extrusion companies have been set up. A large number of large and medium-sized extruders have been deployed and a number of important extrusion companies have been established. The annual production capacity and output have increased significantly. For example, China's current large aluminum extrusion company - Zhongwang Aluminum Profile Co., Ltd., has 90 large, medium and small extruders (the largest of which is a 125 MN forward double-acting hydraulic press, and is preparing to build the world's largest 225 MN oil Horizontal pressure extrusion machine) with an annual production capacity of 400,000 tons. In 2010, the output reached 300,000 tons. Feng Aluminium Aluminum Co., Ltd. is a professional aluminum extrusion company, covering an area of ​​more than 2,000 mu, with more than 70 large, medium and small-sized extrusion presses, with an annual production capacity of over 250,000 tons, and a total output of 180,000 tons in 2010. Among them, industrial materials accounted for more than 40%, and export materials accounted for about 45%. The company has a large-scale technology research and development center, has developed a large number of new materials, new processes and new technologies, and registered in the World Aluminum Association China's new self-developed aluminum alloy - lead-free, free cutting 6043 aluminum alloy. Passed the national military material license certification, is an influential large-scale comprehensive aluminum extrusion company. There are currently more than 800 aluminum extrusion companies in China, of which more than 40 have production capacities of more than 50,000 t/a, 25 have production capacities of more than 100,000 t/a, and 5 have production capacities of more than 200,000 t/a. Home around. Large-scale private extrusion companies are rising.

(2) The climax of large-scale extrusion press construction has increased, and the introduction of reverse extrusion presses has increased dramatically. The number of extruders that have been put into production by the end of 2010 is 40 units with a tonnage greater than 50 MN. More than 12 units are under construction or planned to be built. By 2015, there will be more than 50 large extrusion machines built in China, of which 225 MN will be , 150MN 2 sets, 125MN 3 sets, 100MN 6 sets, 12 sets of 80MN level. At present, China has a total of more than 4,000 extruders, and the number of extruders in the world is high. The number of large-scale extruders can be comparable to that of the United States and Russia. By the end of 2010, China had 32 counter-extruders, of which 12 were modern equipment imported from the German SMS company. Therefore, China is a country with a large number of counter-extruders in the world with a relatively high level and a large tonnage. At the same time, a large number of small, backward presses are being phased out or modified.

(3) Increased industrial and product adjustment efforts, strengthened the ability to independently develop science and technology, expanded the application areas, and developed a large number of new products, new technologies, and new processes. New alloys, new states, new types of new types of aluminum alloy extrusion materials with a variety of properties and applications have emerged. Industrial materials: The proportion of building materials increased from 18:82 in the last century to nearly 34:66 in 2010. Especially in the transportation and electrical and electronic sectors, aluminum profiles have been widely used, and large proportions of large and medium-sized industrial structures are used. Increased in magnitude.

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