This product undergoes precise milling of aluminum through CNC machining, followed by black anodizing treatment. During the anodizing process, accurately controlling the pH value of the dyeing solution is crucial. When the pH value of the solution is maintained between 5-6 or 3-3.5, the adsorption effect of Acid Orange II and Acid Blue Black 10B is optimal, and the absorption of dyes by the oxide film significantly increases. After the two dyes are fully absorbed in the film layer in proportion, a stable and uniform black appearance can be formed, ensuring that the CNC-machined finished product combines quality and aesthetics.
Type I, Type II and Type III are the classification methods of anodizing types in the US military standard MIL-A-8625, and are often used for surface treatment of aluminum and aluminum alloys. The following is an introduction to the three types:
| Type | Name | Electrolyte | Oxide Film Thickness | Color Appearance | Key Features |
| Type I | Chromic Acid Anodizing | Chromic Acid | 0.5–7.6 μm | Gray or light gray, not easy to dye | Thin film, good flexibility, minimal size change |
| Type II | Sulfuric Acid Anodizing | Sulfuric Acid | 5–25 μm | Can be dyed in various colors like black, red, blue, etc. | Cost-effective, strong decorative performance |
| Type III | Hardcoat Anodizing | Sulfuric Acid (low temp, high voltage) | 25–150 μm | Mainly gray or dark gray, difficult to dye | High hardness, excellent wear and corrosion resistance |
We also offer other secondary processing services, including:
- Plating Zinc Color (Machining Steel Parts),
- Electroless Nicke (Machining Aluminum Parts, Machining Stainless Steel Parts,Machining Brass Parts ),
- Passivation (Machining Stainless Steel parts )
- Sand Blasting (Machining Aluminum parts )
- Brushed ( Machining Aluminum parts,Machining Stainless Steel parts ),
- Bluing and Blackening (Machining Steel parts),
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Trivalent Chromium Process(Machining Aluminum parts)
Welding, brazing, soldering,Centerless Grinding and Burnishing
We are a professional manufacturer of CNC machining and mold services, providing components for OEM and ODM customers. Our main services are in the fields of healthcare, automotive, communication, electrical, and electronics. We offer CNC milling, turning, grinding, stamping, bending, welding, die-casting, drilling, tapping, and injection molding processes. We are equipped with more than 46 CNC machining centers and lathes.
We are familiar with the processing of various materials:
| Machining Material | Machining Plastic: | Delrin (Black, White, Blue, Red, Yellow), Nylon, Neoflon, PTFE, Teflon, Ultem, Torlon, Peek, Acrylic, PMMA, PC, Polycarbonate, PAI, PPS, PA, PVDF, POM, PA, PET, PEI, PE, PVC, PP, ABS, PEP, PS, PSF, PI, PMMI, PABM. |
| Machining Metal: | Titanium Aluminum 6061, 6061-T6, 6063, 7075, 2052, 2024, 2017. Copper, Brass, Bronze, Phosphor Bronze. (C10100, C10200, C11000, C12200, C26000, C27000, C28000, C33000, C220, C510, C630 ) Stainless Steel 303, 304, 316 ( 1.4305, 1.4301 ) Steel Ordinary carbon structural Steel, Quality carbon structural steel, cast steel, Steel(350grade steel Aisi 4340,C45,C35,35SPb62,S690) |
We have obtained the ISO9001:2008 quality system certification. Through high-precision equipment, optimized processes, reasonable selection of tools and fixtures, employee training, and full-process inspection, we ensure the excellent quality of the CNC processed parts. The factory operates strictly in accordance with the standard procedures: order review, drawing confirmation, CNC programming of products, precision processing, quality inspection, packaging and transportation. Please provide your drawings or requirements, and we will offer you a quote immediately.
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CNC Machining Anodized Aluminum Parts Images
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