Solar aluminum has good and bad, and the number of buy aluminum big, impossible to check one by one, here to teach you how to identify the quality of the solar aluminum type:

1, the identity check: solar aluminum and standard code is marked on the packaging products and production license, etc.;

2, the surface quality: solar aluminum surface in addition should be clean, not allowed to have defects such as cracks, peeling, corrosion and bubble, also there is no corrosion spots, electric burns, shading, defects such as oxidation film falls off;

3, the thickness of the oxide film: solar aluminum oxide film is formed in the anodic oxidation, have protective and decorative effect, eddy current thickness meter for testing;

4, hole sealing quality: on-site inspection in general by acid leaching method, hole sealing bad solar aluminum will leave traces obviously, the worse the heavier traces that hole sealing quality;

5, the corrosion resistance: can use drop alkali test, visual observation until bubbling corrosion caused droplet, calculation of the oxide film was through time, the experiment is easy to step outside of coarse judgment in the summer, to ensure the accuracy of the test must be in the laboratory under the strict requirements of.