What are the points to pay attention to when purchasing aluminum profiles?

Aluminum profiles are a kind of metal raw materials widely used in the modern industrial industry and the construction industry. The high-quality aluminum profiles not only have a bright appearance, but also have stable physical properties, but some unscrupulous merchants still use some recycled aluminum. If the inferior aluminum is posing as a superior aluminum profile, how to choose an aluminum profile? Today, Jiu Zheng Xiaobian is here to give you a trick!

The main points to pay attention to the purchase of aluminum profiles are:

1, pay attention to product hardness: hardness first has a direct relationship with the chemical composition of the alloy. Second, different states also have a greater impact. From the point of view of the highest hardness that can be achieved, the 7 series, 2 series, 4 series, 5 series, 3 series, and 1 series are successively lowered.

2. Pay attention to product strength: Strength is an important factor that must be considered when designing a product. Especially when an aluminum alloy component is used as a component, an appropriate alloy should be selected according to the pressure it is subjected to. Pure aluminum has the lowest strength, while the 2 and 7 series heat treated alloys have the highest strength. Hardness and strength have a certain positive relationship.

3, pay attention to corrosion resistance: corrosion resistance including chemical corrosion resistance, electrochemical corrosion resistance, stress corrosion resistance and other properties. In general, the corrosion resistance of the 1st pure aluminum is the best, and the 5 series is good, followed by the non-straight line and the 6th line, the 2nd line and the 7th line. The principle of corrosion resistance selection should be based on the application. When high-strength alloys are used in corrosive environments, various anti-corrosion composites must be used.

4. Pay attention to the processing performance of aluminum profiles: processing properties include forming properties and cutting performance. Since the formability is related to the state, after selecting the aluminum alloy grade, it is necessary to consider the strength range of various states, and usually the material having high strength is not easily formed. If the aluminum material is subjected to forming, such as bending, drawing, deep drawing, etc., the formability of the material in the fully annealed state is optimal, and conversely, the formability of the material in the heat-treated state is the worst.

5, pay attention to the welding performance of aluminum profiles: most aluminum alloy welding has no problem, especially some 5 series aluminum alloy, is designed for welding considerations. Relatively speaking, some 2 series and 7 series aluminum alloys are more difficult to weld.

In short, in order to buy high-quality aluminum profiles, Xiao Bian suggests that you should look for professional manufacturers to buy, and in the purchase process must pay attention to the five major points above, and ask to buy one by one, I believe this Will buy high quality aluminum products.

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