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Surface Treatment for CNC Machining Parts

CNC machining can produce precision parts with strict tolerances and fine parts from various metal or plastic materials. Due to the influence of factors such as plastic deformation during chip separation, vibration of the process system, and friction between the tool and the processed surface, there are small tool marks on the part surface after machining. However, we can use various methods to improve the surface roughness, visual performance, and wear resistance of CNC machining parts. The most common metal CNC machining surface treatments listed below can help you choose the most suitable surface treatment for your application.


CNC machining parts like machined parts


Complete options and the fastest turnover time. The parts have smaller visible tool marks and may have sharp edges or burrs, which can be removed as required. The standard machining surface roughness (Ra) is 3.2μm. Surface finish requirements can be increased to 1.6, 0.8, and 0.4μm.


CNC machining parts with bead blasting


Bead blasting adds a uniform matte or satin surface finish to machined OEM CNC machining parts, and removes tool marks. Mainly used for visual purposes.


CNC machining parts with anodizing


Anodizing adds a corrosion-resistant ceramic layer to the surface of machined parts. It can be dyed in different colors, the most common being transparent, black, red, and gold. It is usually associated with aluminum and titanium. Type III adds a wear and corrosion-resistant ceramic layer to the surface of the part. It is thicker than type O and provides better protection. Only suitable for aluminum and titanium.


CNC machining parts with powder coating


This is a process of spraying powder coating onto the components and then baking them in an oven. This creates a durable, wear-resistant, and corrosion-resistant layer that is more durable than standard coating methods. CNC powder coating has higher impact resistance than anodizing. Provides multiple colors. Can be applied to any metal.


CNC machining parts with electroplating


This is a process of using electric current to reduce dissolved metal cations so that they form a thin, coherent metal coating on an electrode. Coatings help prevent corrosion and improve wear resistance, conductivity, reflectivity, and appearance.


CNC machining parts with custom finishing


CNC machining is a manufacturing process that improves efficiency by using higher levels of automation and allowing machines and their computers to control all aspects of the work. As you can imagine, CNC machining has many advantages in custom machining CNC parts.


  • Automation: CNC machining eliminates the need for the operator to do anything other than the work. CNC machines can stay on for hours or even days unattended if necessary, allowing operators to focus on other tasks.


  • Reproducibility: Once the design is sent to the computer, CNC machines can repeat the manufacturing process multiple times. In addition, you will always get high precision in the components.


  • Material range: CNC machining manufacturing is used to manufacture products made of various CNC machining materials. These include bronze, steel, aluminum, as well as gold and silver. Polymers such as ABS, polycarbonate, and PTFE can also be used with the machine.


  • Flexibility: CNC machining machines can be completely reprogrammed in a few hours to produce completely different products.


As a professional China CNC factory,  Richconn provides quality OEM CNC machining solutions. If you have any other questions regarding CNC machining parts, feel free to contact us at any time.

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