Common surface treatment processes for aluminum alloy die-casting parts

　　With the development of technology, the level of die-casting technology in China continues to improve, and there are more and more aluminum alloy die-casting factories in Shenzhen. People's surface treatment effects for aluminum alloy die-casting products are no longer monotonous, but have become more diverse. Today, we will talk about the commonly used surface treatment processes for aluminum alloy die-casting parts?

　　The commonly used surface treatments for aluminum alloy die-casting parts include oil spraying, electroplating, sandblasting, powder coating, vacuum coating, rust prevention and passivation, electrophoresis, baking paint, and so on. However, for different products, their uses and surface treatment requirements are also different. At present, the most widely used surface treatment for aluminum alloy die-casting products is baking paint and powder coating. The surface of die-casting parts made by this process is also rich and colorful.

　　Aluminum alloy die-casting parts - powder coating, commonly known as "powder spray coating", is a process in which powder coating is sprayed onto the surface of the workpiece using powder spraying equipment. Under the action of static electricity, the powder will uniformly adsorb onto the surface of the workpiece, forming a powdery coating. The powder coating undergoes high-temperature baking, leveling, and solidification to become the final coating of different types of powder coatings; The spraying effect of powder spraying is superior to that of spray painting in terms of mechanical strength, adhesion, corrosion resistance, aging resistance, etc., and the cost is also lower than that of spray painting with the same effect. Powder spraying can be roughly divided into outdoor powder and indoor powder. The pattern can be adjusted to various effects, such as smooth surface, sanding, foaming, etc.

　　Aluminum alloy die-casting parts - baked paint. The baking paint process involves phosphating aluminum alloy and then spraying it, followed by baking. This coating not only provides corrosion resistance but also has a bright and wear-resistant finish, making it less likely to peel off. Before painting, a series of pretreatment processes are carried out, including oil removal, water washing, rust removal, water washing, surface adjustment, water washing, phosphating, water washing, water washing, and drying. The purpose of processing is to obtain a good coating.

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