CNC Machining Surface Finishing Processes: Types, Effects and Application Scenarios

Surface finishing is an essential procedure for high-quality CNC machined parts. It not only improves the appearance of mechanical components, but also greatly enhances corrosion resistance, wear resistance, surface hardness and service life.

Main Surface Treatment Processes

Anodizing: Mainly used for aluminum parts. It forms a dense oxide film on the surface to improve corrosion resistance and achieve colorful decorative effects.

Sandblasting: Uniformly removes tool marks, makes the surface matte and delicate, improves coating adhesion.

Mirror Polishing: Reduces surface roughness to Ra0.2 or higher, suitable for precision fitting parts and appearance parts.

Plating and Nickel Coating: Improves hardness, wear resistance and rust prevention for steel and copper parts.

Heat Treatment: Quenching and tempering improve structural hardness and mechanical strength of mechanical parts.

Different surface treatments are selected according to customer usage environments and performance requirements. Wanda CNC provides one-stop processing and surface treatment services to ensure finished parts meet industrial standards.