[China Aluminum Network] Aluminum Frame Because solar photovoltaic modules must ensure an outdoor life of about 25 years, the aluminum frame used in solar photovoltaic modules must have good resistance to oxidation and corrosion. The frame used in general solar photovoltaic modules is divided into three types: anodizing, sandblasting oxidation and electrophoretic oxidation.
Anodized aluminum frame solar photovoltaic cell module: that is, the electrochemical oxidation of metal or alloy, is the metal or alloy parts as anodes, the use of electrolytic methods to form an oxide film on the surface. The metal oxide film changes the surface state and properties such as surface coloration, improves corrosion resistance, enhances wear resistance and hardness, and protects metal surfaces.
Sandblast Oxidation: After sandblasting, the oxides on the surface are all treated, and after impact, the surface layer metal is pressed into a dense array, and the metal crystals are smaller, and the hardness is more solid and dense.
Electrophoretic Oxidation: The process of electroplating a thin layer of other metal or alloy on the surface of certain metals. During electroplating, the plated metal acts as an anode and is oxidized into cations into the electroplating solution; the metal product to be plated acts as a cathode, and the cations of the plated metal are reduced on the metal surface to form a plated layer. In order to eliminate the interference of other cations and make the coating uniform and firm, it is necessary to use a solution containing a plating metal cation as a plating solution in order to maintain the concentration of the plating metal cation unchanged. The purpose of electroplating is to plate a metal coating on the substrate to change the nature or size of the substrate surface. Electroplating enhances the corrosion resistance of metals (more corrosion-resistant metals are used for plating metals), increases hardness, prevents abrasion, lubricity, heat resistance, and aesthetic appearance.
Aluminum frame common specifications: 25mm30mm35mm40mm45mm50mm and so on.
The effect of aluminum profiles on solar photovoltaic modules:
1, protect the glass edge;
2. Improve the overall mechanical strength of the assembly;
3, combined with silica gel to enhance the sealing degree of the component;
4, easy to install and transport components.
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