Five ways to identify the quality of industrial aluminum profiles
1. Identification inspection: whether industrial aluminum profiles and packages are marked with product standard code and production license number, etc.
2. Surface quality: in addition to cleaning the surface of industrial aluminum profile, the thickness of oxide film shall be more than 3. The oxide film of industrial aluminum profile is formed in anodizing, which has the function of protection and decoration. It can be tested by eddy current thickness gauge.
4. Sealing quality: there are many gaps on the surface of industrial aluminum profile after anodizing. If not sealed or not sealed well, the corrosion resistance of industrial aluminum profile will be reduced. The commonly used methods of pore sealing quality inspection are acid leaching, admittance and phosphocasein. In the field inspection, the acid leaching method is generally used, that is, the surface of industrial aluminum profile is wiped clean with acetone > 5. Corrosion resistance: this index mainly affects the service life of industrial aluminum profile. The corrosion resistance inspection includes copper accelerated acetate fog test and alkali dropping test. The alkali dropping test is introduced here, that is, under 35 ℃ ± 1 ℃ > above is the method to solve the problem of identifying the quality of industrial aluminum profile taught by Hongkong credit aluminum industry Multi industry aluminum profile information: http://www.gangxin-alu.com