[China Aluminum Network] In recent years, with the development of China's economy, rail transit between cities and cities has also entered a period of rapid development, which has also brought about a surge in demand for rail transit vehicles. However, at the same time, the existence of energy shortages, environmental degradation and other issues also put forward higher requirements for the development of rail transit vehicles. Aluminum and aluminum alloy materials stand out among many materials because of their light weight, excellent formability, high strength, corrosion resistance, and high rate of regeneration and utilization. In a series of rail transit equipment manufacturing, the rate of aluminumization continues to increase. Especially in developed industrial countries such as Europe, USA and Japan, the application of aluminum and aluminum materials in the transportation equipment manufacturing industry has continued to increase, and has achieved very good economic and social benefits. Although China’s aluminum and aluminum materials have achieved considerable development in the application of transportation and transportation equipment manufacturing in recent years, there is still a certain gap compared with developed industrial countries such as Europe, the United States, Japan and other countries, but this also means that China’s rail transit With aluminum there is room for development. First, as China entered the era of high-speed rail, the demand for aluminum materials for EMUs increased. With the rapid operation of the urban economy and the frequent movement of personnel, the inter-city high-speed railway will become an important driving force for future regional development. China has entered the peak period of high-speed rail construction. According to the data released by the Ministry of Railways, by the end of October 2010, China has operated a total of 7,431 kilometers of high-speed railway network, which is the largest in the world and will increase to 13,000 kilometers before 2012. This includes new high-speed connections and existing tracks upgraded for trains that run at speeds of 200-250 km/h. By 2020, China will build a four-horizontal and four-horizontal intercity rapid passenger transport system with more than 16,000 kilometers of passenger dedicated lines. The prospects for China's high-speed railways, which are poised for development, are bright. China has entered the high-speed rail era. In addition to China, China’s high-speed railways are also extending abroad. Wang Mengshu, a professor at Beijing Jiaotong University and an academician of the Chinese Academy of Engineering, once said that China plans to extend its domestic high-speed rail network to Russia, Central Asia and 17 countries in East Asia in order to complete it in 2025. The construction of high-speed railways has brought demand for EMUs. At present, in the CRHI, CRH2, CRH3, and CRH5 four types of CRHI, CRH2, CRH3, and CRH5 used in the China Railway Passenger Dedicated Line EMUs, except for the CRHI-type vehicle body that uses stainless steel, the other three EMUs are made of aluminum alloy. Due to the modernization of material properties and welding methods, high-speed trains with a speed of 250 kilometers per hour must be made of aluminum alloy. With the construction of the intercity passenger transport system and the continuous extension of the high-speed rail network to foreign countries, the demand for EMU aluminum will also continue to increase. With the development of China’s high-speed rail and train technologies, China’s high-speed rail has already gone out of the country to undertake high-speed rail projects in the world. The Ministry of Railways of China has signed cooperation memoranda with Russia, the United States GE, and other companies. China's EMU is also exported to Australia, the Philippines, Tunisia, Ghana and other countries. It is believed that in the future, as China's high-speed rail and train technologies are exported to foreign countries, the demand for EMU aluminum will also continue to increase. Second, the potential of China's C80 coal-transporting vehicles for aluminum applications In recent years, the development of China's economy has skyrocketed in demand for commodities such as coal and non-ferrous metals. Due to the unbalanced distribution of resources and industrial layout in China, the transportation of bulk raw materials mainly depends on the railways, which has caused tension in the transportation of railway materials. Experts predict that in the next 15 years, China's GDP will continue to grow at a relatively rapid rate, the demand for various materials will increase substantially, and the demand for transportation will continue to rise. According to preliminary calculations, by 2020, the national railway freight transport demand will reach 4 billion tons, with an average annual growth rate of 4%. As the main mode of transportation, railways must provide transportation capabilities that are compatible with market demand. High-speed and heavy-duty are the development direction of railway transportation in the future. The light weight of railway vehicles is an important way to achieve high speed and heavy load. Aluminum is undoubtedly a lighter material. As early as the 1950s, some of the more developed countries in the world began to use aluminum alloy materials to manufacture railway vehicles, including the United States, Canada, Japan, Russia, Germany, France, etc., of which the United States is a comparatively Early, more mature countries. China did not complete the manufacture of the first 210 C80 aluminum alloy gondola cars until March 2004.
