China's Internet News: in recent years, China's economy has developed rapidly. However, in the process of development, the malpractice of economic structure and the way of economic growth have been gradually highlighted, which are generally embodied in three aspects:

First, the construction of China's urbanization has greatly boosted the consumption of industrial metals. "China's demand" led the world, and it once created two rounds of international metal prices in ~2006 and ~2011 in 2009, 2003. However, in the world's commodity pricing power, Chinese sound is always weak, raw material costs are exogenous, and even "buy is expensive, sell is cheap" situation. This has brought severe tests to China's resource support capability and resource strategy security.

Second, the traditional growth mode driven by real estate and infrastructure investment is facing the embarrassment of diminishing marginal effect. With the urbanization, housing, transportation, urban facilities and other projects completed and put into production, China's large-scale real estate and infrastructure investment peak has passed, and the growth of investment in fixed assets is difficult to return to the peak in the future.

Third, the real estate economy brings about social problems. In the course of the development of China's economy, some unbalance of distribution, unfairness in pricing and unreasonable utilization of resources are unavoidable in the process of the development of China's economy. At the same time, the excessive pursuit of GDP scale also accompanied a series of "extensive" expansion of the evil, such as environmental pollution, low efficiency of energy utilization, manufacturing industry overcapacity, and so on.

　　Application of aluminum alloy in transportation and cable fields

Industrial regulation and transformation and upgrading, focusing on energy saving, emission reduction and circular economy, will become the direction of China's economic development in the future. In a sense, the industrial metals industry, which has been criticized for its excess capacity and high energy consumption, will gradually end its high growth and return to stability. However, the development and development of new materials still open up vast space for some industrial metals. Nonferrous metal is an important and indispensable supporting material for the development of information technology, material science and technology, life science, ecological science and technology, marine and space science and technology. In particular, the development of the seven strategic new industries of the state, the implementation of major strategic projects such as aerospace, high speed rail and communication, and the improvement of the performance of high-end machinery and equipment, put forward higher requirements for the properties of metal materials such as tensile strength, corrosion resistance, thermal conductivity, density ratio and so on.

The Trade Research Institute believes that the future aluminum industry will benefit from the strong demand of aluminum alloys and display better explosive power. In the "new material industry" "development plan" issued by the Ministry of industry and information, the total output value of the new material industry in China will reach 2 trillion yuan by 2015, and the average annual growth rate is over 25%. Among the 30 new materials, the 30 key new materials include special metal functional materials, high end metal structure materials and frontier materials. The high end metal structure materials include high quality special steel and new light alloy material. The latter refers to alloy based on aluminum, magnesium, titanium and other metals with specific gravity less than 5 or less than 4.5g/cm3 of light metal.

Among several kinds of light alloys, aluminum alloys are widely used in construction, aerospace, rail transit vehicles, automobile lightweight, electronics and other fields. The advantages of aluminum alloy are mainly reflected in light and portable, significant energy-saving benefits, easy to recycle, no rust treatment, greater compressive strength and so on.

The application of aluminum in railway equipment is mainly concentrated on the car body. At present, in the EMU used in China's railway passenger dedicated lines, except for the stainless steel CRH1 car body, the other car bodies are made of aluminum alloy. Due to the rapid development of railway infrastructure investment in 2009 and 2010, it is estimated that the high speed rail will be completed in the next two years. Related data show that the mileage of China's high speed rail operation will reach 18 thousand kilometers in 2015. By 2012, the mileage of high speed railway in China reached 9356 kilometers, and the mileage of the new operation of high iron in the next 3 years could reach more than 8650 kilometers. According to the density of 0.7 vehicles per kilometre of high-speed trains, about 6050 motor vehicles are needed. It is estimated that about 1.5 tons of aluminum material and aluminum plate are used for each motor car. In the next 3 years, at least 48400 tons of aluminum profiles and 9050 tons of aluminum sheets will be consumed. With the continuous development of China's transportation industry in the future, the use of aluminum and aluminum alloys in railway construction and high-speed rail industry will also increase steadily.

Taking heavy freight cars as an example, the developed countries have generally adopted the trailer of aluminum parts. The self weight of the vehicle is less than 20%~30% of the same kind of steel car in China. The transport efficiency is high and the efficiency of energy saving is obvious. According to the existing social possession of 3 million trailers in China, vehicles with new materials can save 8 million tons of fuel and 24 million tons of carbon emissions annually.

In addition to machinery and equipment, the use of aluminum alloys in wire and cable is also increasing. At present, the aluminum wire abroad is widely used in transformer substation, screen busbar, dense bus, large size section dry, branch wire, its application ratio is Thailand 90%, Saudi 50%, Korea and Japan 70%, Europe 60%, America 50%. With the continuous maturity of technology and the gradual improvement of market recognition, the scale of aluminum generation in China will be greatly improved. It is estimated that in the next 5 years, China's aluminum alloy cable market will make substantial progress, with a market scale of up to 200 billion yuan.

　　Aluminum alloy will usher in the development period of gold

In recent years, our government has successively formulated the "development plan of the" "non ferrous metals" "12th Five-Year", "the" "12th Five-Year" development plan of the "aluminum industry" and the "12th Five-Year" of the new material industry.