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We specialize in sheet metal fabrication, CNC machining, metal stamping, welding, and assembly. Our one-stop support helps save time, reduce costs, and improve efficiency.

our factory operates under an ISO 9001:2015 quality management system to ensure consistent quality and reliable delivery.

Surface finishes for CNC machining

Hongming Sheng provides professional CNC machining surface finishing solutions for OEM customers requiring excellent appearance, corrosion resistance and functional performance.

From prototypes to mass production, we support multiple finishing processes including anodizing, bead blasting, powder coating and precision machined finishes for aluminum, stainless steel and alloy components.

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Choosing The Right CNC Surface Finish

CNC machining can achieve high dimensional accuracy and complex geometries. However, machining processes may leave visible tool marks on the surface.

The correct surface treatment improves:

  • ✔ Appearance and product quality
  • ✔ Corrosion and wear resistance
  • ✔ Surface hardness and durability
  • ✔ Final product performance
FinishMain BenefitSuitable Applications
As MachinedHighest dimensional accuracyPrecision functional parts
Bead BlastingUniform matte appearanceCosmetic CNC parts
AnodizingCorrosion resistance & color optionsAluminum housings and components
Powder CoatingStrong protection and impact resistanceIndustrial equipment parts

1. As Machined CNC Finish

As Machined CNC aluminum part

As machined parts keep the original CNC machining surface with visible tool marks. This finish provides the best dimensional control and is suitable for functional components where appearance is not the primary requirement.

Advantages:

✔ Tightest dimensional tolerances
✔ Lowest additional processing cost
✔ Suitable for precision mechanical parts

Considerations:

Visible machining marks may remain on the surface.

2. Bead Blasting Surface Finish

Bead blasting CNC parts

Bead blasting creates a uniform matte or satin surface by using glass beads to remove machining marks and improve visual appearance.

Advantages:

✔ Smooth and consistent matte finish
✔ Improves product appearance
✔ Cost-effective surface treatment

Typical Applications:

Aluminum enclosures, electronic housings, industrial covers and cosmetic CNC parts.

3. Anodizing CNC Aluminum Parts

Anodized aluminum CNC component

Anodizing creates a protective oxide layer on aluminum surfaces, improving corrosion resistance, hardness and appearance.

Available Options:

✔ Type II anodizing for decorative colors
✔ Type III hard anodizing for higher wear resistance

Suitable Materials:

Aluminum and titanium alloys.

4. Powder Coating CNC Components

Powder coated CNC aluminum part

Powder coating applies a durable protective polymer layer to metal surfaces. It provides excellent impact resistance and a wide range of color choices.

Advantages:

✔ Strong corrosion protection
✔ High impact resistance
✔ Suitable for various metals

Applications:

Industrial equipment, machine frames, outdoor components and metal housings.

How To Select The Right CNC Finish

  • ✔ Choose As Machined for maximum precision.
  • ✔ Choose Bead Blasting for uniform matte appearance.
  • ✔ Choose Anodizing for aluminum protection and colors.
  • ✔ Choose Powder Coating for strong protection and durability.

Why Choose Hongming Sheng?

✔ CNC machining from prototype to mass production

✔ Multiple surface treatment capabilities

✔ Aluminum, stainless steel and alloy processing

✔ Engineering support for material and finishing selection

✔ NDA protection for customer drawings and technical data

Need CNC Surface Finishing Support?

Send your drawings, material requirements and surface finish specifications. Our engineering team will recommend the most suitable finishing solution for your application.

Request CNC Quote Now
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Our email: info@hms1688.com

Contact us and just send us your drawing (SolidWorks,ProE,CAD,PDF,DXF...)

Links: Custom Sheet Metal Enclosure Fabrication | Metal Stamping Services | Sheet Metal Fabrication Services | precision cnc machining and milling services | Metal Welding Services | metal Cutting Services | Metal Bending Service | Metal Surface Treatment & Finishing Solutions | 

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