nouvelles de l'entreprise What is the production process of aluminum honeycomb core？

The production process of aluminum honeycomb core involves several key steps to ensure its lightweight yet strong structural properties. Here’s a concise overview:

1. Material Selection: High-quality aluminum alloy sheets (typically 3003 or 5052) are chosen for their corrosion resistance and strength-to-weight ratio.

2. Cleaning & Surface Treatment
- Sheets undergo degreasing and chemical cleaning to remove impurities.
- Optional anodizing or chromate conversion coating may be applied for enhanced adhesion or corrosion protection.

3. Adhesive Application
- A heat-activated structural adhesive (e.g., epoxy or phenolic) is uniformly applied to the sheets using roller coating or spray methods.
- Precision in adhesive thickness is critical for bond strength.

4. Stacking & Layering
- Treated sheets are stacked in alternating directions (adhesive-side up/down) to the required height.
- Temporary spacers may ensure even spacing before curing.

5. Curing Under Pressure
- The stack is placed in a hydraulic press or autoclave.
- Heat (120–180°C) and pressure (5–20 atm) activate the adhesive, bonding layers into a solid block over several hours.

6. Expansion Process
- The cured block is sliced into smaller panels.
- Each panel is mechanically expanded perpendicular to the layers, forming the hexagonal honeycomb structure.
- Expansion tension determines cell size (typically 3–25 mm) and density.

7. Trimming & Finishing
- Expanded cores are cut to precise dimensions using CNC or waterjet cutting.
- Edges may be sealed or reinforced based on application needs (e.g., aerospace vs. architectural).

8. Quality Control
- Core density, cell uniformity, and bond strength are tested via ultrasonic inspection or shear tests.
- Samples may undergo environmental stress simulations (humidity, temperature cycles).