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1. Selection of aluminum alloy materials and corrosion problems
One of the commonly used materials for Aluminum Led Case Led Light Lamp Frame is aluminum alloy. Aluminum alloy is lightweight, durable and has good thermal conductivity, and is widely used in various lighting products. However, aluminum alloy is prone to corrosion when facing external factors such as humid environment, salt spray, high temperature, etc., especially when used outdoors. When the surface of aluminum alloy is not effectively treated, it is very susceptible to moisture and oxygen in the air, causing surface oxidation, which in turn affects the appearance and structural integrity of the lamp, and even damages the internal components of the lamp.
2. Application of surface treatment technology
In order to solve the corrosion problem of aluminum alloy housing, modern Aluminum Led Case Led Light Lamp Frame manufacturers usually adopt a series of surface treatment technologies. These technologies can not only improve the corrosion resistance of the aluminum alloy surface, but also protect the lamp from the erosion of the external environment and extend its service life. The following are several common surface treatment methods and their role in improving corrosion resistance.
1. Anodizing
Anodizing is a surface treatment technology that forms a dense oxide film on the surface of aluminum alloy through electrochemical reaction. The film is composed of aluminum oxide (Al2O3) and has high hardness, wear resistance and excellent corrosion resistance.
Enhanced corrosion resistance: Through anodizing, a uniform thickness of aluminum oxide film will be formed on the surface of aluminum alloy. This oxide film can effectively isolate oxygen, moisture and other corrosive substances in the air from direct contact with the aluminum alloy body, thereby greatly reducing the risk of corrosion. Especially in corrosive environments such as moisture and salt spray, the oxide film can effectively prevent the occurrence of oxidation process and prevent the aluminum alloy shell from rusting or corroding.
Improve environmental resistance: The surface of the anodized aluminum alloy is not only highly resistant to corrosion, but also resistant to erosion by acidic or alkaline substances, which enables it to maintain good performance under complex environmental conditions (such as high humidity and salt spray environments in coastal areas).
Environmental protection: Anodizing is an environmentally friendly surface treatment method that does not use harmful chemicals, and the aluminum oxide film can be recycled, so it meets the requirements of modern green manufacturing.
2. Spraying (powder spraying, liquid coating)
Spraying is a surface treatment technology that forms a protective film by spraying paint on the surface of aluminum alloy. According to the type of paint used, spraying can be divided into two methods: powder spraying and liquid coating.
Powder spraying: After electrostatic spraying, the powder coating solidifies into a film at high temperature to form a uniform protective layer. Powder spray coating usually contains highly corrosion-resistant materials such as polyester and epoxy resin, which can effectively isolate corrosive substances such as moisture, gas, and salt spray.
Liquid coating: Liquid coating is applied to the surface of aluminum alloy by spraying or dipping. Common coatings include polyurethane and acrylic resin, which can provide strong anti-corrosion protection and prevent moisture, acid and alkali substances from penetrating into the surface of aluminum alloy.
Improvement of corrosion resistance: The sprayed coating can effectively isolate the external environment from erosion of the aluminum alloy body and avoid corrosion reactions caused by air, moisture, salt, etc. In particular, powder spraying technology can provide a thicker coating to enhance its corrosion resistance, especially suitable for harsh outdoor environments.
Aesthetics and functionality: Spraying can not only improve corrosion resistance, but also give Aluminum Led Case Led Light Lamp Frame rich colors and gloss, enhance its aesthetics, and also increase the ability to resist UV radiation through special coatings to prevent the coating from fading due to sunlight.
3. Electrophoretic coating
Electrophoretic coating is a method of evenly coating the surface of aluminum alloys through electrochemical action to form a thin and uniform coating.
Excellent corrosion resistance: The coating formed by electrophoretic coating is closely combined with the surface of aluminum alloys, which can effectively enhance the corrosion resistance of aluminum alloys and prevent the intrusion of moisture and gas. In addition, the electrophoretic coating also has good weather resistance and UV resistance, making it less likely to fade and crack in long-term use.
Wear resistance: The electr
ophoretic coating has a high hardness and can effectively resist physical wear and chemical corrosion from the outside world. It is a double protection against corrosion and physical damage.
3. Other surface treatment technologies
In addition to anodizing, spraying and electrophoretic coating, there are some other surface treatment technologies, such as coating impregnation, anti-corrosion film coating, etc., which can also improve the corrosion resistance of LED lamp housing.
Coating impregnation: By immersing the aluminum alloy housing in anti-corrosion coating, a dense protective layer is formed. This method can provide excellent corrosion resistance for lamps and is suitable for environments that require frequent contact with chemicals.
Plating treatment: By plating a layer of metal (such as zinc plating, chrome plating, etc.) on the surface of the aluminum alloy, a dense metal plating is formed, which can effectively prevent the intrusion of oxygen and moisture and enhance corrosion resistance.
