CNC Machined Anodized Aluminum Parts

As a factory with mature manufacturing processes, Tuoyuan Metal offers CNC Machined Anodized Aluminum Parts as one of its key product offerings for global buyers. We are capable of high-efficiency, high-precision machining and provide direct-from-factory pricing.

Advantages of Anodizing

Superior Corrosion Resistance: Anodizing forms a hard, dense aluminum oxide film on the surface of aluminum parts. This film acts like a sturdy armor, effectively blocking external corrosion such as moisture, oxygen, and chemicals. Even in harsh environments, such as humid marine environments and corrosive industrial sites, parts remain in excellent condition for extended periods, significantly extending their service life.

Significantly Improved Hardness and Wear Resistance: The oxide film's hardness is significantly higher than that of ordinary aluminum, typically reaching 500-600 HV. This ensures excellent resistance to mechanical friction and wear, reducing surface scratches and wear, and lowering maintenance and replacement costs. It is particularly suitable for components exposed to high-load, high-friction environments.

Diverse and Beautiful Cosmetic Effects: The anodizing process offers a wide variety of color options, from classic black and silver to trendy gold and blue, with long-lasting, fade-resistant colors. The smooth, glossy surface enhances the product's visual appeal and market competitiveness, meeting the personalized aesthetic needs of various industries.

Good electrical insulation properties: Aluminum oxide films possess excellent electrical insulation properties, making them crucial for components used in electronic equipment and other applications. They effectively prevent current leakage and short circuits, ensuring safe and stable operation of equipment and expanding the application range of aluminum components in the electrical field.

Product Features

Oxide Film Stability: Professional scratch testing confirmed the oxide film's adhesion strength exceeds 5N, forming a strong metallurgical bond with the aluminum substrate. After 500 cycles of testing at temperatures ranging from -40°C to 120°C, the oxide film showed no signs of cracking or peeling. Its performance remains stable even in environments with humidity fluctuations between 10% and 90%, ensuring long-term use in a variety of extreme climates.

Electrical Insulation: The oxide film's volume resistivity is no less than 10¹⁴Ω・cm, and its breakdown voltage is at least 300V. When used as an insulating support component in electronic equipment, it effectively cuts off current conduction, prevents short circuits, and ensures safe operation.

Thermal Conductivity: Laser thermal conductivity testing shows that the overall thermal conductivity of this part remains within the range of 180-200W/(m・K). Compared to plastic parts of similar thickness, this improves thermal efficiency by over 80%, maintaining a safe operating temperature for components requiring rapid heat dissipation, such as LED heat sinks and motor end caps.

Production Process

Raw Material Preparation and Inspection: Select high-quality aluminum materials, test their composition, mechanical properties, and appearance, and use them only after passing the inspection.

CNC Machining: Analyze the drawing and program the parts. After clamping the aluminum materials, perform rough machining, semi-finishing, and final machining in sequence. After completion, inspect the dimensional accuracy.

Surface Pretreatment: Degreasing and degreasing, alkaline etching to remove oxide films and burrs, and polishing as needed to enhance the finish.

Anodizing: Parts are immersed in an electrolyte and subjected to direct current to form an oxide film, followed by sealing to enhance performance.

Post-Processing and Inspection: CNC Machined Anodized Aluminum Parts are dried, their appearance and performance are inspected, and qualified parts are packaged and stored.

Application

Electronics Industry: Commonly used in the housings and internal components of products such as mobile phones and computers. Its high-precision processing allows it to fit into compact equipment spaces. The anodized surface is wear- and scratch-resistant, and its insulation protects internal circuitry. CNC Machined Anodized Aluminum Parts' lightweight properties also reduce the overall weight of the equipment.

Automotive: Widely used in components such as battery housings and window frames for new energy vehicles. The corrosion resistance of the oxide film protects against battery electrolyte erosion, while its excellent thermal conductivity helps dissipate heat from the battery. It also meets the strength and precision requirements of automotive components.

Aerospace: Suitable for drone fuselages and satellite components. The lightweight components reduce flight energy consumption, while their high weather resistance ensures stable operation in complex high-altitude environments. Precision processing ensures precise component assembly and ensures flight safety.

Medical Device: Used in the housings and precision components of medical devices. The surface is easy to clean and disinfectant-resistant, and the processing precision meets the precise operation requirements of the instruments, ensuring the stability and hygienic safety of medical equipment.

Industrial Automation: Used in robotic arm joints, conveyor belt components, and more. High hardness and wear resistance can withstand long-term mechanical movement friction, and dimensional accuracy ensures smooth equipment operation and improves production efficiency.