CO2 Laser Marking Machine Marking Depth
The marking depth of a CO2 laser marking machine depends on several factors, including the laser power, material type, focusing lens, marking speed, and number of passes. Here’s a general overview:
Typical Marking Depth for CO2 Lasers
Non-metallic materials (wood, acrylic, leather, rubber, glass, plastics, etc.) can achieve deeper engravings compared to metals.
Metals are generally harder to engrave deeply with a CO2 laser (as they primarily absorb fiber/UV laser wavelengths better).
| Material | Laser Power | Marking Depth Range |
|---|---|---|
| Wood | 30W - 100W | 0.1mm - 3mm+ |
| Acrylic | 30W - 100W | 0.2mm - 5mm |
| Leather | 10W - 60W | 0.1mm - 2mm |
| Rubber | 10W - 60W | 0.1mm - 1.5mm |
| Glass | 30W - 100W | Surface etching only (no deep engraving) |
| Anodized Aluminum | 30W - 100W | Surface marking only (no deep engraving) |
| Plastics | 10W - 100W | 0.1mm - 2mm |
Factors Affecting Marking Depth
Laser Power – Higher power (e.g., 60W, 100W) allows deeper engraving.
Marking Speed – Slower speeds increase depth but may cause burning.
Number of Passes – Multiple passes increase depth (but may require cooling).
Focus Lens – A shorter focal length (e.g., 2") provides finer detail but less depth, while a longer focal length (e.g., 4") allows deeper engraving.
Material Composition – Some materials (like dark acrylic) absorb CO2 laser (10.6µm wavelength) better, allowing deeper marks.
