In today’s advanced manufacturing landscape, precision CNC aluminum parts black hard anodized are at the forefront of performance and reliability. These components are widely used in industries such as aerospace, defense, medical devices, automotive, and high-end consumer electronics. The combination of CNC machining for exacting tolerances and black hard anodizing for superior surface protection makes these parts an ideal choice where durability, appearance, and corrosion resistance are critical.
What Are Precision CNC Aluminum Parts?
CNC (Computer Numerical Control) machining is a subtractive manufacturing process that uses automated cutting tools to precisely shape materials. Aluminum, due to its excellent machinability, strength-to-weight ratio, and affordability, is one of the most commonly used metals in CNC machining.
Common aluminum grades used for CNC machining:
- 6061: Highly versatile, excellent mechanical properties
- 7075: High strength, used in aerospace and defense
- 2024: Excellent fatigue resistance
- 5052: Strong corrosion resistance and formability
Precision CNC machining ensures:
- Tight tolerances (±0.001” or better)
- Repeatability for high-volume production
- Compatibility with complex designs and geometries
- Excellent surface finishes for post-processing like anodizing
What is Black Hard Anodizing?
Hard anodizing, also known as Type III anodizing, is an electrochemical process that converts the surface of aluminum into a thick, hard, and corrosion-resistant oxide layer. When combined with black dye during the process, it produces black hard anodized parts that are both visually appealing and extremely functional.
Features of black hard anodizing:
- Hardness up to 60–70 Rockwell C
- Oxide layer thickness of 25–100 microns (0.001”–0.004”)
- Superior wear resistance compared to standard anodizing
- High corrosion resistance
- Electrical insulation properties
- UV and heat resistance
Black hard anodizing also improves the part’s appearance with a sleek, matte or satin black finish that resists fading, fingerprints, and chemical degradation.
Typical Applications
Precision CNC aluminum parts with black hard anodizing are used in a wide range of industries:
1.Aerospace & Defense
- Structural brackets
- Drone frames and gimbals
- Optical and guidance systems
2.Automotive & Motorsports
- Transmission housings
- Suspension components
- Racing bike parts and controls
3.Electronics & Instrumentation
- Heat sinks
- RF shielding enclosures
- Mounting plates and brackets
4.Medical Devices
- Equipment housings
- Surgical tools (non-implantable)
- Diagnostic fixtures
5.Consumer Products
- Camera housings
- Audio components
- Flashlight bodies and mounting systems
Quality Assurance and Inspection
- Coordinate Measuring Machines (CMMs) for dimensional accuracy
- Hardness testing of the anodized layer
- Visual inspection for anodizing quality (color uniformity, no blotching)
- Salt spray or corrosion testing for parts used in extreme environments
| | CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| | Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
| Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
| Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
| Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
| Titanium: Grade F1-F5 |
| Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| | Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| | ±0.002 ~ ±0.005mm |
| | Min Ra 0.1~3.2 |
| CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
