Joinsda Aerospace Structural Lightweight Upgrade Project​

Architectural Aluminum Products

SkyLight Aerospace Structural Lightweight Upgrade Project​

Solution:

1. Material Innovation: 6063-T6 Aluminum Alloy

We selected the high-strength 6063-T6 aluminum alloy.

Key material properties:​

1. Tensile strength: 510 MPa
2. Yield strength: 480 MPa​
3. Corrosion resistance: Passed 5,000-hour salt spray test (ASTM B117 standard)​
4. Weight reduction: 28% compared to the original 6061-T5 components​

2. Precision Manufacturing Process Optimization​

1. CNC Machining: Adopted 5-axis CNC milling to achieve complex structural designs (e.g., hollowed-out ribs and lattice structures) that reduce weight without compromising strength. The machining tolerance was controlled within ±0.02 mm to ensure assembly accuracy.​
2. Surface Treatment: Applied a hard anodizing coating (thickness: 15-20 μm) combined with a chromate conversion layer to further enhance corrosion resistance and wear resistance.​

3. Comprehensive Quality Validation​

1. Structural Testing: Conducted static load tests and fatigue tests at an accredited aviation laboratory, verifying that the components could withstand 1.5 times the maximum operational load and 10⁸ fatigue cycles without failure.​
2. Non-Destructive Testing (NDT): Used ultrasonic testing (UT) and X-ray inspection to detect internal defects (e.g., cracks, inclusions) with a detection limit of ≥0.5 mm.​
3. Certification Compliance: Assisted the client in obtaining FAA PMA (Parts Manufacturer Approval) and EASA Part 21G certifications, ensuring full compliance with aviation industry regulations.​