China's magnetic levitation technology Germany shocked Japan's reflection
What is a maglev train? According to experts, the high-speed maglev train is a technological invention of the 20th century. Since the 1960s, with the representatives of Germany and Japan, in-depth research and trial and error have been carried out on the two kinds of magnetic floating technology modes of constant conductance and superconductivity. The Shanghai Maglev demonstration operation line adopts the German normal guidance mode and introduces German technology.
According to reports, the Shanghai-Hangzhou Maglev Line will lay a special 175-kilometer special track between Shanghai and Hangzhou, with a train speed of 450 km/h. Taking into account noise and other issues, the operating speed will be controlled to 200 kilometers in the urban area.
According to the plan, this magnetic levitation line will be put into operation before the 2010 Shanghai World Expo. According to experts' estimates, the cost of the magnetic levitation line project from Shanghai to Hangzhou is 35 billion yuan.
In 2003, the world's first maglev train entered commercial operations in Shanghai, China. In order to get a bigger market, the German ThyssenKrupp and Siemens companies that have been negotiating with China certainly do not want China to develop their own maglev trains.
Last month, German media reported that China's Chengdu Aircraft Industry Group is developing its own maglev train and will test it in Shanghai in July this year. The new train is designed to be faster than the German magnetic levitation, but it is not German technology. The development project of the "Dolphin" high-speed maglev vehicle belonging to the National 863 Program was put into production in Chengdu last September. In July this year, the Dolphin will be commissioned on the 17-kilometer track of Shanghai Tongji University.
A number of German media reported on China's own development of maglev trains, although Zheng Qihui, the head of China's Chengdu Aircraft Industry Group project, said that China's maglev train technology utilizes some aerospace technology not available in Germany, and secondly in lightweight design. Germany is advanced, but the view that China has copied the German magnetic levitation technology is still beginning to appear in Germany. Among them, the German Bavarian Governor Stoiber said the most representative, he claimed that this incident "smells a lot of technical theft."
However, Peter Niko, director of the German Railway Technology Institute in Berlin, said that the possibility of China's large-scale plagiarism of protected German magnetic levitation technology can be ruled out. Former Siemens president Feng Bile said that Siemens has long known that China is engaged in magnetic suspension development at Tongji University. He said that what the Germans should know is that even if they develop the magnetic levitation technology, if they do not apply it, they will be further promoted elsewhere. Peter Niko said that he hopes that Germany and China will continue to cooperate more in the development of magnetic levitation technology.
Germany's "Frankfurt Report" commented that so far, "Shanghai's maglev train is more of a tourist attraction project, rather than economically and technically meaningful means of transportation." But the Shanghai-Hangzhou maglev line will change this.
Japanese media analysts believe that although one of the bottlenecks in China's social development is that the transportation network is still not developed enough, it is now stepping up the construction of Shanghai-Hangzhou Maglev Line, Beijing-Shanghai High-speed Railway, etc., and a number of strategically important large projects under the government's leadership. Constantly becoming a reality. In contrast, Tokyo has spent decades and not even a high-speed ring has been built, and the Japanese government's lack of strategic vision is evident.
The Nikkei BP's report entitled "The Enlightenment of Shanghai Maglev Trains to the Future of Japan" compares Japan's magnetic levitation development plan. According to reports, the Japanese maglev train developed in the 1970s chose superconductivity in the magnetic levitation method. Because Japan is a country with many earthquakes, the use of powerful superconducting magnets can make the suspension distance more than 100 mm. The suspension distance of the Shanghai Maglev train using the normal guide mode is about 8mm. Another advantage of the superconducting method is that since the magnet can be driven by the permanent current mode, the vehicle body can be supplied with no floating power, and the resulting vehicle body is light and simple.
However, for the practical use of superconducting maglev trains, there are huge obstacles in both quantity and quality. After solving the numerous problems one by one and implementing a stable driving experiment with a speed of more than 500 kilometers per hour on the Yamanashi Experimental Line, it was finally decided by the Technical Evaluation Committee of the Ministry of Land, Infrastructure, Transport and Tourism in March last year that “the basic technology can be considered established†evaluation of.
The report commented that Japan’s efforts to develop tens of billions of yen in research funding and technical personnel for superconducting maglev trains have not been realized for 30 years. China's maglev train is a huge stimulus for Japan.