Aluminum alloy plate hybridization hole sealing treatment method

The invention discloses an aluminum alloy plate hybridization hole sealing treatment method, and belongs to the technical field of aluminum alloy passivation treatment, through hybridization sealing treatment, holes of an oxidation film subjected to anodic oxidation are sealed, an organic-inorganic sol film layer is formed on the oxidation film, a good blocking effect on some external corrosive media is achieved, and the corrosion resistance of the oxidation film is improved. And therefore, the corrosion resistance of the anodic oxidation film layer is improved. SiO2 particles in the silica sol can enter holes of a micro-arc oxidation film layer, micropores in an oxidation film are sealed, furan resin is condensed with silicon hydroxyl on the surface of SiO2 under the catalysis of sulfur dioxide and the action of temperature to generate Si-O-C bonds, self-crosslinking is performed to generate an insoluble body type crosslinking structure, and a compact hole sealing layer can be formed on an external loose lay