How to relieve the high voltage ignition failure in the CO2 laser marking machine

2019-06-25 08:43

The CO2 laser marking machine has high-pressure sparking phenomenon, which is divided into two phenomena: laser tube internal ignition and external tube ignition. Both types of ignition can hear obvious noise. It can be distinguished by visual observation that the spark in the tube can see obvious discharge arc in the tube, and the spark outside the tube can see obvious discharge arc in the fire place. The fire outside the tube is mainly at the high pressure joint or next to the high voltage line.

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cause of issue:


1. Fire in the tube:

(1) The water in the laser tube is not full and there are bubbles.

(2) The laser tube electrode lead is in poor contact.

(3), the power-on sequence is not correct.

(4), laser tube quality problems.


2. Fire outside the tube:

(1) The high pressure joint is loose and the contact is poor.

(2) The ambient air is humid, the water at the high-pressure joint is too large, and the high-voltage joint discharges outward, causing a fire.

(3) The high voltage line is leaking and there is damage.

(4), high-voltage lines have sharp objects, such as copper wire, solder wire and so on.


Method of exclusion:

1. Fire in the tube:

(1) Observe whether there are any bubbles in the laser tube. If there is any, the bubbles must be removed. The laser tube is erected in the direction of water inflow in the case of water, so that the bubbles flow out.

(2) If the fire is at the electrode, turn off the power supply to see if there is any loose electrode lead to ensure good lead connection.

(3) The order of power supply for customers is as follows: first open the main power supply, reset the standby device, and then turn on the laser power to prevent the laser from being pre-ionized to make the laser tube fire.

(4) Replace the laser tube.


2. Fire outside the tube:

(1) Pull the two ends of the high-voltage connector to see if there is any looseness and ensure that the joint is well connected.

(2) In wet weather, it should be ensured that the air at the high pressure joint is dry and the high pressure joint is free of water.

(3), the high-voltage line is damaged, must be replaced, can not be wrapped with electrical tape.

(4), the high-voltage line has some sharp objects, such as copper wire, solder wire, etc., cut off, smooth.


Note: High-pressure ignition will cause the CO2 laser marker to work abnormally. When it is serious, it can cause the computer to crash. It should be solved as soon as possible after discovery.