Application and Replacement of Mg Aluminum Sheets for Vehicles

At present, the application of magnesium board in the automotive, rail transportation and other industries is still at the starting stage relative to aluminum, but its market prospects are very broad. It is understood that Wen Xiyin and China Automotive, Shandong Hua Shengrong and Beijing Automotive Group, Chinalco Losco and Zhengzhou Yutong, China Aluminum and Geely Automobile, China Aluminum and Dongfeng Automobile, National Magnesium Alloy Engineering Center and Changan Automobile , Sino-foreign joint-venture vehicle companies such as Nanjing Baoqi (Germany Dato Fly) and Shanghai General Motors are in the process of cooperation (or the relationship between special suppliers and customers), and vigorously promote the industrialization and large-scale application of magnesium plates in the automotive and rail transit areas. Cooperation or joint research and development achievements have also reached the goal of phasing.

In foreign countries, BMW 3 Series seat backs, Audi A8 and Volkswagen POLO door panels, Mercedes-Benz sedan top panels, French high-speed rails, etc. have all been used by ThyssenKrupp MgF. Magnesium plate with thickness between 1.5~2mm. ThyssenKrupp in Germany, Pohang in South Korea, and Ilicachuang in the UK are the three most representative magnesium plate R&D and production companies abroad and are currently cooperating to jointly manufacture and sell magnesium alloy sheet for the automotive industry. Germany's Daofei Company's extruded magnesium sheet has been industrialized and supplied to Opel and other automobile companies.

In the use of specifications, thickness of 1.2 ~ 3mm magnesium plate for the manufacture of instrument panel, door panel, engine cover, trunk lid, roof panel, transmission cover, seat frame and backrest; 0.6 ~ 3.5mm thickness The product is used to manufacture the upper and lower panels of the cellular floor; the thickness of the magnesium plate used in the train liner and the article rack is 3~5mm; the thickness of the magnesium plate used in the train skirt, seat and berth plate is 5~7mm; inside the train The thickness of the magnesium plate used in the force piece is usually 4-12mm.

In the areas of automobiles, rail transportation, ships, containers, etc., magnesium-aluminum, magnesium-steel, and magnesium-polymer materials can be considered in addition to components that can be directly used in magnesium plates. The interface of composite plates is not limited to rolling. In addition to the combination of high-grade molecules such as explosion, extrusion, etc., many parts can meet the requirements of use by using bolts, pins, rivets, adhesives, and packaging (this approach is undoubtedly more conducive to the application of magnesium plates).

In 2015, aluminum plates used in the automotive, rail transportation, and container industries were around 50,000 tons. Taking into account China’s current development trend and the proportion of industry development, it is expected that by 2020, the demand for aluminum plates in the transportation sector will reach 20 10,000 to 300,000 tons (the demand for transportation aluminum will exceed the current demand for aluminum for construction). Considering the metal substitution rate of 10%, the current domestic demand for magnesium boards in the transportation sector should be reasonable at 5,000 tons/year. By 2020, the demand for substitution of magnesium boards in this field is expected to reach 20,000 to 30,000 tons/year. year. If considering the metal's conventional predicted replacement rate, ie 30%, by 2020, the demand for magnesium plate replacement in the transportation sector will reach nearly 100,000 tons/year.