Metal Surface Finishing

Surface Finishing Processes

1. Anodizing (Main process for aluminum parts) 

Custom-tailored for CNC-machined aluminum components, aluminum housings and aluminum structural parts. It delivers fine matte surface, non-conductive property, excellent scratch & wear resistance as well as corrosion resistance with consistent color finish.

Applications: Aluminum housings, panels, hardware components, decorative appearance parts.

2. Powder Coating

Widely-used finishing process for our sheet-metal parts. It creates a thick coating with strong adhesion, outstanding scratch and wear resistance, and excellent hiding power to cover sheet-metal joint marks and minor surface blemishes. It delivers premium matte or textured-matte appearance, together with good dust-proof and anti-rust performance.

Applications: Chassis & cabinets, equipment housings, large-size sheet-metal structural components.

3. Sandblasting

High-pressure abrasive media uniformly textures the metal surface, removing tool marks, oxide layers and scratches. It produces a consistent fine matte grain finish for premium tactile appearance. Meanwhile, it improves coating adhesion, serving as an essential pre-treatment before anodizing and powder coating.

Applications: Aluminum alloy housings, panels, hardware parts.

4. Polishing

Available in fine polishing, mirror polishing and brushed finishing. It removes tool marks, burrs and surface grain, resulting in bright and smooth workpieces. Stainless steel can achieve a mirror-like finish after polishing, while brushed aluminum presents delicate metallic textures, ideal for decorative visible-surface parts.

5. Electroplating

Mainly applied for copper, carbon steel and iron parts to improve rust-proof performance and increase surface hardness with reliable protective properties. Suitable for structural components and fasteners. Treatments can be customized per customer requirements.

6. Brushed Finish

Creates even linear textures on product surfaces, covering minor surface imperfections with strong metallic feeling. Widely used for high-end equipment panels, decorative housings and stainless-steel cosmetic parts.

FAQ

1. Will anodizing affect dimensional accuracy?

The film thickness of standard anodizing is extremely thin and barely affects assembly. For precision-critical parts, we control film-thickness tolerances to ensure smooth fitting.

2. Why is anodizing preferred over painting for aluminum parts?

Anodizing forms an oxide layer from the base metal itself. It is fade-resistant, peel-proof, scratch-resistant and delivers premium texture. Paint is just a surface coating which may chip upon impact; it is more suitable for large sheet-metal components.

3. Can we customize Pantone colors?

Pantone-matched colors are available. We can adjust shade, matte and glossy finishes as requested.

4. Which finishing processes suit different materials?

- Aluminum alloy: Anodizing, sandblasting, brushed finish, powder coating - Stainless steel: Polishing, brushed finish, sandblasting - Carbon steel: Zinc plating, black oxide treatment, powder coating -Copper: Polishing, electroplating