1, Spraying
Sandblasting is a common surface treatment method for precision machining of CNC aluminum products. It uses a spray gun to spray sand particles onto the surface of the workpiece to remove impurities and oxide layers, while also changing the surface roughness and improving surface adhesion. Sandblasting treatment is generally divided into two methods: wet sandblasting and dry sandblasting. Wet sandblasting can better control surface roughness while dry sandblasting can remove deep oxide layers.

2,Polishing treatment
Polishing treatment is the process of polishing and brightening the surface of CNC aluminum products using tools such as polishing wheels and polishing fluids to obtain a smooth and flat surface. Polishing treatment is generally divided into three methods: mechanical polishing, chemical polishing, and electrochemical polishing. Mechanical polishing involves physically polishing the surface using polishing wheels and polishing fluid; Chemical polishing involves the use of chemical reagents to chemically corrode the surface; Electrochemical polishing involves the use of electrochemical polishing technology to perform electrochemical corrosion on the surface.

3,Anodizing treatment
Anodic oxidation treatment is a commonly used precision machining method for CNC aluminum products, which uses electrolysis technology to form a layer of oxide film on the surface of aluminum products through surface treatment in order to improve surface wear resistance, corrosion resistance, and insulation. Anodizing treatment can also change the color and appearance of the surface.

4, Electroplating treatment
Electroplating treatment is a commonly used surface treatment method for precision machining of CNC aluminum products. By using electrolysis technology, a layer of metal or alloy is electroplated on the surface of aluminum products to improve surface hardness, wear resistance, and corrosion resistance. Electroplating treatment is generally divided into different types, such as chromium plating, zinc plating, copper plating, etc. Among them, chromium plating can obtain a bright luster, zinc plating can prevent oxidation and corrosion, and copper plating can improve conductivity and heat transfer.

5,Laser marking processing
Laser marking processing is an advanced CNC aluminum product with precision, and it is applied to the surface using the excitation light square beam method. The surface of aluminum products is engraved with markings such as text, patterns, and logos to improve the appearance quality and anti-counterfeiting of the product. Label processing has the characteristics of high precision, high speed, and high efficiency, which is suitable for products with high requirements for labeling.

The above are some common methods for precision machining surface treatment of CNC aluminum products, each of which has its own characteristics and applicability. When selecting surface treatment methods, it is necessary to comprehensively consider the specific requirements and usage environment of the product to achieve the best surface treatment effect.