Author: Shanghai Jinxi Precision Machinery Co., Ltd.
Reading Time: 4 minutes |
Aluminum structural parts are widely used in robotics, automation and medical devices due to their lightweight and high-rigidity properties. However, raw aluminum surfaces are prone to scratches, corrosion and wear, shortening component service life and affecting equipment stability.
Anodizing is the standard high-end surface treatment for precision aluminum components. It creates a dense protective oxide layer to boost corrosion resistance, surface hardness and appearance consistency. As a reliable Shanghai precision machining supplier, Shanghai Jinxi Precision Machinery provides standardized one-stop CNC machining and anodizing services for global industrial clients.
Why Precision Aluminum Parts Need Standard Anodizing
Unregulated anodizing easily causes uneven color, peeling and coating thickness deviation. For precision parts with ±0.005mm tolerance, unqualified surface treatment will result in assembly failure and early aging. Jinxi strictly controls all process parameters to ensure zero dimensional interference, uniform coating and stable adhesion, fully complying with EU industrial standards.
Shanghai Jinxi strictly controls every process parameter to ensure the anodized layer is uniform in thickness, stable in adhesion and zero dimensional interference, fully meeting EU industrial and medical equipment component standards.
Standard Anodizing Process Flow for Precision Aluminum Structural Parts
Jinxi adopts a standardized 7-step closed-loop anodizing process exclusively for precision CNC aluminum parts, ensuring stable batch quality and avoiding common industry defects:
1. Professional Pre-Cleaning & Degreasing
Thoroughly remove CNC cutting oil, dust and fingerprints via multi-stage cleaning and pure water rinsing to guarantee a flawless base surface for oxidation.
2. Surface Etching & Polishing
Chemical etching removes natural oxide layers and tiny burrs. Fine polishing is available to eliminate tool marks for high-appearance parts.
3. Neutralization & Pure Water Rinsing
Complete neutralization and repeated pure water rinsing eliminate chemical residues, preventing color difference and surface damage.
4. Constant-Temperature Anodizing Treatment
Precise temperature (18–22°C), voltage (15–18V) and current control form a dense 8–15μm oxide layer, raising surface hardness above HV300 for excellent wear and corrosion resistance.
5. Precision Coloring (Customizable)
We provide uniform custom coloring including industrial black, silver gray and blue, with no fading or color difference for functional and decorative needs.
6. High-Temperature Sealing Treatment
High-temperature sealing closes oxide layer micropores, greatly improving waterproof, anti-corrosion and anti-fouling performance for long-term stable use.
7. Final Inspection & Precision Packaging
Full inspection of film thickness, surface uniformity and dimensions. Qualified parts are professionally packaged to avoid transit damage.
Core Process Data & Quality Advantages
All processes adopt strict data-based control to ensure consistent high quality for high-standard aluminum structural parts:
Oxide film thickness: 8–15μm (customizable)
Surface hardness: ≥HV300, 3 times higher than bare aluminum
Tolerance stability: Zero impact on assembly precision, retaining ±0.005mm machining accuracy
Quality pass rate: Batch yield ≥99.5%
Durability: Anti-corrosion and anti-fading for long-term industrial use
Transparent Lead Time for Overseas Orders
Jinxi integrates CNC machining and anodizing in-house, avoiding unstable quality and delays caused by third-party outsourcing:
Small-batch prototype parts: 3-6 working days
Medium and large-batch structural parts: 15-20 working days
Why Choose Shanghai Jinxi?
Most suppliers outsource anodizing, leading to poor consistency. Shanghai Jinxi delivers reliable one-stop CNC machining + anodizing solution. We support customized coating thickness and colors, with official quality reports provided for every order.
Get Quick Custom Quotation Send your CAD/STEP drawings for aluminum precision parts and anodizing needs. Shanghai Jinxi Precision Machinery will provide professional solutions and accurate quotes within 24 hours.