The transportation industry is an essential part of life and one of the important factors in improving the quality of life and survival. The current transportation industry mainly includes aircraft passenger and cargo transportation, high-speed railway and double-decker passenger transportation, heavy-load freight transportation, underground railway; automobile passenger and cargo transportation, motorcycles and bicycles, ship passenger and cargo transportation, etc. Aluminum profiles are required for support in these transportation vehicles. Let's analyze the development and application of aluminum profiles in railways, automobiles, motorcycles and bicycles, and shipbuilding industries.
In today's era, high speed, energy saving, safety, comfort and environmental protection are important issues in the transportation industry, and lightweighting is the most effective way to achieve the above goals. After years of comparative research, designers, strength engineers, craftsmen, metallurgists and economists have reached a unanimous conclusion: using aluminum profiles to make transportation tools, especially high-speed modern vehicles and ships, is more efficient than wood, plastic, composite Materials such as weathering steel and stainless steel are more scientific, advanced and economical. Therefore, the application of aluminum profiles in the transportation industry has been favored since the 1980s.
In industrially developed countries, the amount of aluminum profiles used in the transportation industry accounts for about 30% of the total aluminum consumption, of which the amount of aluminum profiles used in automobiles accounts for about 15%. Mainly used to manufacture body structural parts, door windows and shelves, engine parts, cylinder blocks, cylinder heads, air conditioners, radiators, body panels, Skin panels and hubs, etc., as well as various passenger ships (such as regular line ships, charter yachts, speedboats, hydrofoils), fishing boats and various business ships (such as patrol ships, fishery management ships, customs boats and harbor surveillance boats, etc.) , superstructure, panels, partitions, skin panels, engine components, etc. of special ships (such as racing boats, submarine cable laying ships, ocean research ships, disaster prevention ships, etc.). At present, industrially developed countries such as Japan and Germany have developed all-aluminum cars, all-aluminum motorcycles, bicycles, all-aluminum speedboats and racing boats, as well as all-aluminum high-speed passenger car compartments and subway vehicles. The transportation industry has become the largest user of aluminum profiles.