[China Aluminum Network] Solar aluminum profiles are mixed, and the number of aluminum profiles purchased is too large to be checked. Here's how to identify the quality of solar aluminum:
1. Marking inspection: Whether solar aluminum profiles and packaging are marked with product standard code and production license number;
2. Surface quality: In addition to the cleanliness of the surface of solar aluminum profiles, there must be no defects such as cracks, peeling, corrosion, and bubbles, and there must be no defects such as corrosion spots, electric burns, dark spots, and oxide film shedding;
3. Oxide film thickness: The oxide film of solar aluminum profile is formed in anodization, with protection and decorative effect, and can be detected by eddy current thickness gauge;
4. Sealed hole quality: The acid leaching method is generally used in the on-site inspection. The solar aluminum profiles with bad sealing holes will leave obvious traces. The heavier the traces, the worse the quality of the plugging holes.
5, corrosion resistance: can be used drop alkali test, visual observation of the droplet until the corrosion bubbling, calculate the oxide film was penetrated by the time, this test is easy to determine in the outdoor rough summer, in order to ensure the test Accuracy must be performed under the strict conditions of the laboratory.
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