The anodized film of aluminum alloy is basically a brittle film of inorganic compound, and it is not uncommon to crack the anode anodized film under mechanical stress or thermal stress. Al..........
The anodized film of aluminum alloy is basically a brittle film of inorganic compound, and it is not uncommon to crack the anode anodized film under mechanical stress or thermal stress. Although foreign companies bend the aluminum alloy sheet to the surface of the chicken to raise the cracking sound of the chicken, and then qualitatively estimate the bending radius to estimate the cracking property of the aluminum anodized film, in general, the tensile test or the direct test is not used. Bending to test the openness of the aluminum anodized film. Although the flexibility of the aluminum anode is important in wood chip applications, it is generally not possible to consider mechanical properties such as cupping, bending or impact tests. The basic performance test is used to quantitatively judge the flexibility of the aluminum anodized film. The crack resistance of aluminum anodized film under mechanical stress or thermal stress is an important performance with practical significance, directly related to the so-called plasticity or flexibility of aluminum anodized film;
The flexibility of the anodized aluminum film is not only related to the process conditions of the anodization, but also largely depends on the sealing process. The crack of the anodized film due to thermal stress is related to the flexibility of the anodized film, and the coefficient of thermal expansion between the anodized film and the collective metal, and also to the base metal of the anodized film. According to other factors, from the perspective of the microstructure of the aluminum anodized film, the flexibility should be related to the structural parameters such as the diameter and porosity of the structural micropores, and the flexibility of the aluminum anodized film, although it is impossible to directly measure the anode. The elongation ability of the oxide film is judged.
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