Laser Engraving Graphite

The parts were engraved with a 20 watt q-switched ytterbium fiber laser and 160 mm focal length lens. The 160mm focal length lens has a working distance of 176mm from lens to part. The marks were done at 3 different depths using 2 passes, 4 passes and 6 passes. The artwork on the part was duplicated.

Process Parameters:
Material: Graphite

Power: 18 Watt

Method used: Engraving

Frequency: 25 kHz

Depth: Various

Speed: 5 inch\sec

Laser Type: Q-Switched Fiber Laser

Focal Length Lens: 160mm

Cycle Time:

Marks 1 – 2 Passes – 32.59 Seconds

Marks 2 – 4 Passes – 65.17 Seconds

Marks 3 – 6 Passes – 97.75 Seconds