Why is the marking of CO2 laser marking machine not clear? How to check and repair?

in FAQs about Laser Marking,

In the non-metallic material marking industry, CO2 laser marking machine is the common choice of people. Because the wavelength of the CO2 laser is conducive to the absorption of non-metallic materials, that is to say, the CO2 laser marker has a good marking effect for non-metallic parts among many laser marking machines.

However, the decrease of the laser intensity during the working process of CO2 laser marking machine is a headache, which seriously affects the marking effect in the processing and makes the mark not clear enough. To solve this problem, we must inspect and repair the CO2 laser marking equipment.

How to solve the problem of unclear marking of CO2 laser marking machine?

Mainly start from the following aspects:

1. Check whether the laser resonant cavity has changed. Fine-tune the resonant cavity lens to ensure that the output spot reaches a good state;

2. Measure whether the laser entering the galvo is off-center, and adjust the laser;

3. Check whether the acousto-optic crystal offset or the output energy of the acousto-optic power supply is low, adjust the acousto-optic crystal position or increase the working current of the acousto-optic power supply;

4. If the current is adjusted to about 20A and the light intensity is not strong enough, it proves that the krypton lamp has been aging, and it is urgent to replace the new lamp.

If the above points are in place, the problem of unclear marking of the CO2 laser marking machine can basically be solved.

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