With magnesium alloy parts, the car is lighter and more energy-efficient. Nowadays, magnesium alloy auto parts developed by our city have made “slimming†vehicles such as Volvo successful. Recently, the reporter learned from the Municipal Science and Technology Commission that Chongqing’s major scientific and technological research project “Development and Industrialization of Light Automotive Parts and Components†passed inspection by experts. Through the implementation of the project, the city has built a large-scale magnesium alloy industrialization demonstration base, with an annual production capacity of 3 million pieces of magnesium alloy auto parts. Since the products were put on the market, the output value has exceeded 110 million yuan, and the foreign exchange earned through exports exceeded 5 million. Dollars.
According to reports, magnesium is a very light metal element. It is alloyed with other metals and is 30% lighter than aluminum alloys of the same size. It is moderately popularized on automobiles and motorcycles and can reduce vehicle energy consumption and save manufacturing costs. And production costs.
"Actually, magnesium alloys have already had many applications in the automotive field. For example, 98% of the world's automotive steering wheels are made of magnesium alloys. It is not only lighter in weight but also better in shock absorption. The damage is also smaller.†Long Siyuan, deputy director of the National Magnesium Alloy Engineering Research Center of Chongqing University, told reporters that magnesium alloy parts are used in parts such as wheels and automobile anti-collision beams to reduce vehicle safety and reduce The quality of the car itself and the reduction of car consumption are particularly significant.
However, Long Siyuan also frankly stated that the use of magnesium alloy for the manufacture of automobile parts has always had the problems of high cost of die casting and high scrap rate. To this end, starting from 2010, the project team led by Chongqing Boao Mg-Al Metal Manufacturing Co., Ltd. carried out key technology research and industrialization of large-scale magnesium alloy parts, and broke through the low-cost large-scale magnesium alloy component die-casting production technology. And a number of key technologies such as industrialization, magnesium alloy wheels, magnesium alloy anti-collision beams, and a number of technical achievements with independent intellectual property rights, and drafted a national standard, applied for 5 patents, of which 4 are invention patents .
“The breakthrough of magnesium alloy scrap recycling technology has played an important role in reducing the cost of magnesium alloy parts and components.†Boao company responsible person said that at present, the domestic magnesium alloy scrap recycling mainly uses the flux method, the recycling cost is 6000 yuan/ton. Around, the cost is high and it also produces harmful gases. The Boao Company's waste recycling uses a non-flux regeneration technology, cost savings of 3,000 yuan / ton or more, and to avoid environmental pollution.
The responsible person stated that at present, the company has successfully developed low-cost large-scale magnesium alloy components such as automobile dashboards and wheels, and the finished product rate is over 90%. The products not only replace the use of related imported auto parts in domestic automakers, but also are exported overseas.
“The magnesium alloy parts of the car dashboard, the center console, and the steering system have been used on foreign Volvo cars. Compared to previous steel parts, the quality has decreased by about 40%.†The official said that the large-scale magnesium The successful research and development of key technologies for die-casting of alloy components will help promote the widespread application of magnesium alloys in the automotive industry in China and enhance the competitiveness of China's automotive industry.