Industrial Aluminum Aluminum Profile Surface Oxidation Treatment Process Defect and Response Method-WJW Aluminum Supplier Aluminum

Aluminum profile sandbladder refers to the sandblasting technology that is used to eliminate the stretching traces of aluminum profiles. Oxidation refers to a protective film on the surface of aluminum profiles through anode oxidation. This dyeing is composed of a large number of hexagonal cells perpendicular to the metal surface. Each cell center has a membrane hole and has a strong adsorption force. When the alumina is immersed in the dye solution, the dye molecules are spread into the membrane's membrane's membrane's membrane's membrane's membrane, forming a dyston in the form of difficulty and ion bonds with the oxide film. The seal is because the binding of the key is reversible, which will occur under certain conditions.

Therefore, after dyeing, the dye must be sealed and fixed in the membrane hole. During the entire oxidation chromosome, industrial aluminum is a common phenomenon due to oxidation. The thickness of the thin film thickness and pores is the prerequisite and foundation of whether the dye can obtain a uniform color. In order to obtain a uniform and consistent oxide film, it is necessary to ensure sufficient circulation and cooling, and to ensure good conductivity. In addition, the stability of the oxidation process is also the stability of the oxidation process. The anode oxidation is the basis of dyeing as a pre -staining process.

The defects and solutions of aluminum surface oxidation treatment

The appearance defects of aluminum and aluminum products are often an important reason for rework. In the production process of aluminum products, the following defects often occur: 1. Striped defects, such as black lines; 2. surface spots, corrosion; 3. Surface surface Oil pollution, different colors, etc. There are not many reasons for defects.

Oxidation treatment of aluminum surface spots defect

Before oxidation, if the aluminum surface is splashed with acid, alkaline solution, or is affected by the mist and alkali mist, it is easy to appear white spots on its surface. Round spots will appear when the corrosion is severe. The corrosion phenomenon is alkaline corrosion, and corrosion between crystals is acid corrosion. Therefore, the method of controlling aluminum is to put aluminum as much as possible in a dry environment.

Corrosion after the oxidation of aluminum surface

The presence of a small amount of chloride in the oxidation groove is likely to cause aluminum corrosion, which is mainly caused by the corrosion of spots. The main influencing factors include temperature, alkaline washing time, FE content in alloy composition, SI content, and aluminum product extrusion status. In the thicker squeezed stripes, spots corrosion has a certain direction, because when the stress concentration is concentrated, the lattice changes. The priority precipitation of ions created conditions for subsequent spots.

(Oxidation treatment of aluminum surface) Surface oil pollution and different colors

Some chromosome tones are gray and the color is poor, which may be pollution caused by the impurities dissolved in the color solution during the electrolyte. Aluminum ion pollution often occurs, and has a significant adverse effect on the substrate. When electrolytic coloring, if you want to adjust and eliminate a large amount of leakage gas.

Therefore, when the electrolyte voltage is lower than the anode oxidation voltage, if a problem is found, it is recommended to increase the electrolytic color voltage to above the anode oxidation voltage, thereby solving the problem of abnormal color tone.