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How to identify aluminum profiles?

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Update time : 2022-11-09 18:36:13
What is aluminum? Aluminum profiles are aluminum alloy materials with different section shapes obtained by hot melting and extrusion of aluminum alloy rods, collectively known as aluminum profiles.
With the increase of aluminum profile application scope, the production of aluminum profile manufacturers are more and more, but in the production of aluminum profile manufacturers are mixed, the quality level is not uniform, which requires us to have a pair of eyes to identify aluminum profiles.
Summarize the following methods to identify aluminum profiles to share with you:
1. Look at the surface of the aluminum profile
Aluminum alloy profile surface is smooth, uniform color, clean, neat, no cracks, peeling, corrosion and bubbles and other defects exist.
2. The thickness of oxide film on the surface of aluminum profile meets the standard
The surface thickness of aluminum alloy profiles is measured by eddy current thickness meter, and then compared with the industry standard to see whether it is within the industry standard range.
3. Corrosion resistance detection of aluminum profiles
Corrosion resistance of aluminum profiles seriously affects the service life of aluminum profiles. The corrosion resistance of aluminum profiles is tested by alkali drop test, that is, 10mg, 100g/L NaOH solution is dropped on the surface of aluminum profiles at 35 ° C ±1 ° C, and the droplets are visually observed until corrosion bubbles occur. The penetration time of the oxide film is calculated. The longer the time, the better the corrosion resistance is.
4. Test the hardness
The aluminum bar doped with waste aluminum extrudes the industrial aluminum profile with excessive impurities and high iron content, which will lead to black hair and dark, no luster, and more seriously, the hardness is not up to the standard. The 6063 has a hardness standard of 8-12HW for aluminum profiles, and the tensile strength and yield strength are also very high, which can be tested with a Vickers hardness tester.
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