What Precautions Should Be Taken When Operating a Laser Marking Machine?

1. It is strictly forbidden to start the laser power supply and Q-switching power supply of the laser marking machine without water or abnormal water circulation;

2. The Q power supply is not allowed to work without load (that is, the output end of the Q-switching power supply is suspended);

3. If an abnormal phenomenon occurs, first turn off the galvanometer switch and key switch, and then check;

4. It is not allowed to start other components before the krypton lamp is ignited to prevent high voltage from entering and damaging the components;

5. Pay attention to the laser power supply output end (anode) being suspended to prevent sparks and breakdowns with other electrical appliances;

6. Keep the internal circulation water clean. Clean the water tank regularly and replace it with clean deionized water or pure water.

Use and replacement of krypton lamp: Turn off the water cooler and laser power supply. Open the three upper cavity covers, take out the lamp or crystal to be replaced, put it in after replacement, and install the cavity cover. Turn on the water cooler and laser power supply, and adjust the laser power supply current to about (15~20) A. Place a small piece of wood or black paper between the front diaphragm and the beam expander, and you should see the light spot formed by laser ablation. If not, slightly adjust the three knobs of the front diaphragm frame until the light spot appears. After the laser is debugged, the three knobs of the front diaphragm frame should be repeatedly adjusted to make the light spot the strongest. If the laser is too strong and the brightness is too high to be observed, the power supply current can be reduced. Turn off the laser marking machine's power supply.

Special attention: the time to replace the krypton lamp. The service life of the krypton lamp in the laser is 300 hours, but due to different user conditions, the above time cannot be used as the only basis for replacing the krypton lamp. With the increase of usage time, the luminous efficiency of the krypton lamp decreases, and the laser output also weakens. In order to obtain sufficient laser output, many users increase the current of the laser power supply to enhance the luminescence of the krypton lamp, which accelerates the aging of the krypton lamp, forming a vicious cycle, and sometimes causes the lamp to explode. In order to prevent this phenomenon from happening, we recommend that users decide whether to replace the krypton lamp according to the following method. When replacing a new krypton lamp, record the current meter value of the laser power supply during normal marking as the standard current value. When the krypton lamp gradually ages, increase the current output of the laser power supply, but the current meter value should not exceed 1.25 times the standard current value. For example, when a new krypton lamp is used for marking, the current value is 20A. After a period of use, if the current value is increased to 22.5A and the marking still fails, the krypton lamp should be replaced.