Metal CNC Processing Anodizing

CNC machine offers exceptional machining precision and excellent mechanical properties, making it a valuable choice for industrial applications. These machines are capable of processing a wide range of materials, including plastics and metals. You can use metal CNC Processing Anodizing for better product properties.

Material: plastics and metals

Processing technology: CNC

Time: 7 days

CNC Anodizing, an electrochemical process, is primarily used for metal and alloy oxidation. By immersing the metal in an electrolyte under specific conditions and applying current, a layer of oxide film forms on aluminum products, known as “anodes.” This process is typically carried out using sulfuric acid anodizing. Anodizing serves to enhance the surface hardness and wear resistance of aluminum alloys.

Advantages of Metal CNC Anodizing :

The thickness of the oxide film obtained by anodized is generally 5 – 20μm, and the thickness of the hard anodic oxide film can reach 60 – 2500μm. The film also has the following characteristics :

( 1 ) High hardness. The hardness of pure aluminum oxide film is higher than that of aluminum alloy oxide film. Usually, its hardness is related to the alloy composition of aluminum and the technical conditions of the electrolyte when anodized.

( 2 ) High corrosion resistance. Anodized oxide films demonstrate excellent chemical stability, resulting in superior corrosion resistance. After testing, the anodized oxide film of pure aluminum has better corrosion resistance than aluminum alloy.

( 3 ) Strong adsorption capacity. The anodized oxide film on aluminum and aluminum alloys possesses a porous structure, providing strong adsorption capabilities. This structure allows for the incorporation of various pigments, lubricants, and resins, further enhancing the protective, insulating, wear-resistant, and decorative qualities of aluminum products.

( 4 ) Electrical Insulation. Anodized oxide films do not conduct electricity, distinguishing them from metals and making them ideal for insulation purposes.

( 5 ) Adiabatic Heat Resistance. Anodized oxide films have remarkable heat resistance. Their thermal conductivity is significantly lower than that of pure aluminum. Anodized oxide films can withstand temperatures of about 1500 °C, while pure aluminum can only endure temperatures of up to 660 °C.

In conclusion, the oxide films formed on the surfaces of aluminum and aluminum alloys, especially through anodizing, offer exceptional protective and decorative properties. Consequently, they find wide-ranging applications in aviation, electrical engineering, mechanical manufacturing, and light industries.