What is a CO2 Laser Marking Machine?
A CO2 laser marking machine is an automated precision engraving system utilizing a carbon dioxide gas laser with a wavelength of 10.64μm. By focusing a high-energy laser beam onto non-metal surfaces, it vaporizes the top layer of the material to reveal deep-seated patterns, text, or logos. This thermal process creates permanent, high-contrast marks that are resistant to wear and chemicals.
Applicable Materials & Industries
Compatible Materials:
Wood, Plywood, MDF, Bamboo, Leather, Fabric, Paper, Rubber, PMMA, ABS, PVC, Epoxy Resin, Plastic, Acrylic, Glass, Architectural Ceramics, and various organic materials.
Key Industries:
Medical, Horology, Eyewear, Instrumentation, Apparel, Leather Goods, Packaging (Food & Beverage), Cosmetics, Electronic Components, and Communication Equipment Manufacturing.
Working Principle
The CO2 laser is a gas laser that uses CO2 as the active medium. The gas is filled into a discharge tube, and a high voltage is applied. This creates a glow discharge, causing the gas molecules to release laser light. After amplifying this energy, it forms a powerful laser beam. The computer-controlled galvanometer then moves the mirrors to guide the beam, creating precise marks through localized vaporization of the target material.
Technical Specifications
| Laser Power Options | 20W / 30W / 60W / 80W / 100W / 150W / 200W |
| Laser Wavelength | 10.6 μm |
| Marking Speed | ≤ 12,000 mm/s |
| Cooling System | Air Cooling / Water Cooling (Based on Power) |
Pros (Advantages)
- Non-contact processing: No damage to the workpiece.
- Zero Consumables: Low operating costs.
- Permanent Marking: Resistant to environmental wear.
- High Efficiency: Ideal for mass production lines.
Cons (Limitations)
- Not suitable for direct marking on bare metals.
- Requires proper ventilation for fumes.
Maintenance Checklist
1. Lens Cleaning: Clean the field lens daily with lens tissue and alcohol to prevent dust burn-in.
2. Cooling System: Ensure vents are clear of dust. For water-cooled units, change pure water weekly.
3. Power Stability: Use a voltage stabilizer to protect the laser source from surges.
Troubleshooting & FAQ
Q: Why is the laser power dropping?
A: Check if the laser tube is reaching its end of life or if the power supply voltage is unstable. Also, ensure the lenses are not contaminated.
Q: What causes uneven marking depth?
A: This is usually due to the work surface not being perfectly level or the focal length being incorrectly set.
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