As we all know, the scope of
industrial aluminium profiles is very extensive, almost everywhere, especially in the construction industry. Now that with the development of science and technology, the types of aluminum profiles have also increased, so-called unique features, so how do we choose?
1. Strength: Strength is an important factor that must be considered when designing a product. When an aluminum alloy component is used as a component, an appropriate alloy should be selected according to the pressure applied. The strength of pure aluminum is the lowest, while that of 2 and 7 series heat treatment alloys is the highest, and the hardness and strength have a certain down phase relationship.
2, hardness: Many customers are very concerned about the purchase of aluminum, hardness is preferred with the chemical composition of the alloy has a direct relationship. Secondly, different states also have a greater influence. From the highest hardness that can be achieved, the 7th, 2nd, 4th, 6th, 5th, 3rd, and 1th series are successively reduced.
3, corrosion resistance: corrosion resistance including chemical corrosion, resistance to stress corrosion and other properties. In general, the corrosion resistance of 1 series pure aluminum was the best, 5 series performed well, followed by 3 series and 6 series, and 2 series and 7 series were poor. Corrosion resistance selection principles should be based on the use of the occasion. For high-strength alloys used in corrosive environments, a variety of corrosion-resistant composite materials must be used.
4. Weldability: Most aluminum alloys have no problem in weldability, especially some 5 series aluminum alloys are designed specifically for welding considerations. Relatively speaking, some 2 Series and 7 Series aluminum alloys are harder to weld.
5, decorative properties: aluminum used in decorative or certain specific occasions, the need for its surface anodizing, painting and other processing, in order to obtain the corresponding color and surface organization, then the decorative nature of its focus should be considered, In general, materials with good corrosion resistance have excellent anodizing performance, surface treatment performance, and coating performance.
6, processability: processing performance package insert forming performance and cutting performance. Because the formability is related to the state, after selecting the aluminum alloy brand, it is necessary to consider the strength range of various states. Generally, the high-strength material is not easy to form. The fruit form should be bent, stretched, deep-drawn, etc., and the formability of the finished annealed material should be the best. Conversely, the formability of the heat treated material is the worst. Aluminum alloys have poor machinability. For molds and mechanical parts, they need better machinability. Conversely, low-strength people have poor machinability. For products that require cutting, such as molds and mechanical parts, the machinability of aluminum alloys is important. Consider the factors.
