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The transportation industry has long become a pillar industry for the economic and social development of industrialized countries, and is the largest user of aluminum alloy doors and windows profiles for large and medium-sized industrial structures.
In the aerospace field, large and medium profiles have long been widely used in aircraft, missiles, rockets and other aerospace aircraft. The top ten aluminum brands are the traditional aluminum profile market; in automobile manufacturing, body beams, side panels, hollow profiles, and side panels Column profiles, cargo box wall panel profiles, grooved wall panels and other compartment panel profiles, scaffold profiles, and the compartment frames of tanks, armored vehicles, personnel carriers, mail vehicles, medical vehicles, refrigerated vehicles and other special vehicles are made of large and medium-sized aluminum Alloy profile.
As early as 1974, the United States began to produce high-strength aluminum alloy profiles for low-disks of trucks, and Japan uses 300,000 tons of aluminum alloy profiles for automobile manufacturing every year. In terms of railway transportation and urban rail transportation, in order to achieve high-speed, safety, energy-saving, aesthetics, comfort, low-cost, and high-efficiency purposes, industrially developed countries have continuously increased the degree of aluminum, making high-speed trains, subway trains, light rail trains, and double-decker passenger cars Lightweight and modern. In recent years, even passenger and freight cars on ordinary railways have begun to use aluminum profiles to make car bodies.
The United States and the former Soviet Union have long used aluminum profiles to manufacture the bodies, frames, side panels and end doors of passenger cars and trucks that transport coal, chemicals, ore and other goods. Aluminum vehicles have already exceeded 10,000. As of 2005, the number of aluminum vehicles (passenger cars and trucks) in operation in Japan has reached more than 20,000, and there have been more than 150,000 aluminum vehicles in the world. According to reports, the Japanese government has ordered that all steel vehicles in Japan will be decommissioned by 2010 and replaced by aluminum vehicles. In terms of shipbuilding, all ships and ships’ superstructures, floors, decks, partitions, and decorative panels have used a large number of aluminum alloy profiles, and all-aluminum submarines, speedboats, motorboats, waterboats and racing boats have been used for operation. Temporary airport runways, military pontoons, highway and railway bridges and towers, and marine and vehicle containers closely related to the transportation industry have also begun to use aluminum plates and profiles in large quantities, of which aluminum profiles with large interruptions account for more than 45%.
In addition, modern industrial developed countries have also used aluminum in large quantities in electronics and electrical appliances, post and telecommunications, heat dissipation and air conditioning, petrochemical, mining anvil exploration, coal power, electromechanical manufacturing, and other industries. Among them, aluminum profiles for large interruptions account for about 50%. According to incomplete statistics, there are currently about 400 extruders with a capacity of more than 30MN in the world, with an annual output of about 500,000 tons of large and medium-sized industrial structure aluminum alloy profiles, while the world needs more than 800,000 tons each year, and the gap is large.
