Xinhua News Agency, Chongqing, June 28 (Reporter Wang Jintao) An expert on magnesium alloy research in the United States predicted here on the 28th that in the next few years, the global average magnesium alloy usage per vehicle will reach 120 kg, which will reduce the number of vehicles. It weighs 500 kilograms, which greatly reduces vehicle fuel consumption and exhaust emissions.
Grimald S. Cole, expert of the North American Automobile Alliance's magnesium alloy project, said at the International Symposium on Magnesium for Motor Vehicles and Motorcycles, which was opened on the same day that the growth rate of global magnesium alloys in automotive die castings has been maintained at 15% for many years in a row. , is the current and future new industry highlights. Body weight is reduced by 10%, fuel consumption can be reduced by 6% to 8%, fuel efficiency can be increased by 5.5%, and noise can be reduced by 2dB. Therefore, magnesium alloys have the ability to make cars lightweight, and expanding the application of magnesium alloys in vehicles will be one of the important solutions to solve the shortage of oil resources and global warming.
Magnesium alloys are lighter than steels and aluminum alloys, their strength is higher than that of aluminum alloys and steels, their stiffness is close to that of aluminum alloys, they have good castability and stability, and they can replace traditional steel and aluminum alloy materials to some extent, mainly used for production. Car seats, rims, front, steering wheel, pedal bracket, fuel tank door, etc. In the 1920s, Germany took the lead in applying magnesium alloys to the automotive industry. Since then, European and American automobile manufacturers have applied magnesium alloy components. In 2005, the global automotive magnesium alloy die casting increased from 56,000 tons in 1995 to 160,000 tons.
According to Meng Shukun, executive vice president of China Nonferrous Metals Industry Association Magnesium Branch, currently automobile and motorcycle companies such as Changan, FAW, Dongfeng, Chery, Geely, and Longxin have developed dozens of magnesium alloy components and have independent intellectual property rights. Car loading operation, the effect is significant.
Zhang Xingye, honorary chairman of the China Society of Automotive Engineers, said that China is strengthening the management of energy conservation and emission reduction in transportation and controlling the development of high fuel consumption and high pollution motor vehicles. To achieve the goal of energy conservation and emission reduction, the automobile and other vehicle industries should expand the application of magnesium alloy, a high-strength light metal material. This has become a major opportunity for China's magnesium industry and automotive and motorcycle industry to achieve independent innovation. It is also a major challenge.
It is understood that despite the promising prospects of the magnesium alloy industry, it still faces some restrictive factors, such as the heat resistance and corrosion resistance of magnesium alloys need to be improved and the production cost is higher. Therefore, experts recommend that scientific research institutions concentrate their efforts on research and promote the wider use of magnesium alloys in the automotive and motorcycle industries.
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