來源：http://www.mallhometrade.com 發布時間：2021-10-19 14:13:51
Large size and high-performance aluminum coils usually refer to aluminum precision and deep-processing products that meet high standards in surface quality, dimensional accuracy, version and performance. They are widely used in key basic materials required for national economic development and national defense construction, such as transportation (subway, high-speed railway, etc.), aerospace, marine ships, packaging and so on.
I. automobile lightweight:
Aluminum alloy is widely used in various parts of automobile, such as instrument panel and engine support, aluminum alloy wheels, suspension system parts, bumper anti-collision beam, cylinder, door and heat exchanger. Aluminum instead of steel can reduce the weight of engine and wheel by about 30%, aluminum radiator (compared with copper products) by 20% ~ 40%, and the weight of the whole vehicle by 30% ~ 40%. This greatly improves the speed and handling ability of the car.
II. High speed railway body materials:
High speed railway is a "large aluminum user". More than 85% of the materials of a train of high-speed railway car body are extruded aluminum profiles. The whole car body is welded by profiles, plates, castings and forgings. The high-speed railway carriage not only has high requirements for rigid strength, but also has restrictions on the self weight of the carriage. The density of aluminum alloy only accounts for 1 / 3 of the density of steel, but after adding certain elements to form alloy, the strength is higher than that of steel alloy. Naturally, it is a choice!
Industry experts also pointed out that high-speed trains with a speed of more than 300 kilometers per hour must use aluminum alloy, and all train carriages with a speed of more than 350 kilometers use aluminum profiles except the chassis.
III. one of the important metal materials for aviation equipment manufacturing
At the same strength level, aluminum alloy can provide materials with thicker section and better buckling resistance under compression. It has become a classic aircraft structural material. For example, high-strength aluminum alloy thick plate, as the main load-bearing component, accounts for 30% ~ 35% of the total aluminum consumption on the aircraft.