Aluminum Extrusion is a core forming process for aluminum profiles, which uses hydraulic pressure to push heated aluminum billets (usually 6061/6063/7075 series aluminum alloys) through a customized steel die to produce aluminum profiles with fixed cross-sectional shapes. It is the primary processing method for manufacturing aluminum structural parts, frames, enclosures, and custom-shaped aluminum components.
Key Features & Advantages
 High material utilization rate, low production cost for batch aluminum profiles;
 Customizable cross-sectional shapes (simple straight bars, complex hollow profiles, special-shaped structures);
 The extruded aluminum profiles have uniform structure, good mechanical properties, and can be further processed (cutting, drilling, surface treatment) as semi-finished products;
​​​​​​​ Suitable for mass production of aluminum parts with the same cross-section, widely used in industrial equipment, construction, automotive, and electronic product aluminum accessories.
Common Application for Aluminum Products
Industrial aluminum frames, aluminum heat sinks, aluminum enclosures for electrical equipment, aluminum structural bars, custom aluminum profiles for mechanical parts.

CNC Milling is a core branch of CNC Machining, a processing method that uses high-speed rotating milling cutters (end mills, face mills, etc.) to remove excess aluminum material by linear or curved movement relative to the aluminum workpiece. The machine tool controls the three-axis (X/Y/Z) or multi-axis (3+2 axis, 5-axis) linkage to complete the processing of aluminum parts' planes, grooves, holes, complex contours, and 3D curved surfaces, and is the most commonly used processing method for aluminum structural parts with complex shapes.
Key Features & Advantages
 Can process complex 2D/3D shapes of aluminum parts, suitable for aluminum parts with irregular contours and multiple processing surfaces;
 Milling cutters have various types, which can realize one-time processing of aluminum parts such as rough milling (fast material removal) and finish milling (precision forming);
 High processing efficiency for aluminum materials (aluminum is a soft metal), and the processed surface has good flatness;
 Multi-axis milling can process aluminum work pieces without secondary clamping, reducing processing errors and improving production efficiency.
Common Aluminum Part Processing Scenarios
Aluminum panel slotting, aluminum frame hole making and tapping, aluminum heat sink fin processing, custom 3D-shaped aluminum mechanical parts, aluminum enclosure opening and trimming.

Surface finish is a series of post-processing processes for aluminum parts after CNC machining (milling/turning) and aluminum extrusion forming, which is used to improve the surface performance, appearance quality, and service life of aluminum parts. According to the application requirements (corrosion resistance, wear resistance, aesthetic appearance, electrical conductivity), different surface treatment processes are selected, and it is a key process to enhance the added value of aluminum products.
Common Surface Finish Processes for Aluminum Parts (Industrial & Commercial)
1.Anodizing: Form a dense oxide film on the aluminum surface, improve corrosion resistance and wear resistance; can be colored (black, silver, gold, red, etc.), the most commonly used surface treatment for industrial aluminum parts;
2.Powder Coating: Spray thermosetting powder coating on the aluminum surface and cure it at high temperature, with thick coating, good impact resistance, and rich color options;
3.Sandblasting / Brushing: Sandblasting forms a matte uniform surface on aluminum parts; brushing forms linear texture, improves the aesthetic appearance of aluminum surface, and is the pre-treatment of anodizing;
4.Polishing: Polish the aluminum surface to a mirror finish, suitable for decorative aluminum parts;
5.Electroplating: Plating a layer of metal (nickel, chrome, etc.) on the aluminum surface, improve wear resistance and electrical conductivity;
6.Heat Transfer Printing: Print patterns/logos on the aluminum surface, suitable for customized decorative aluminum parts;