CO2 laser marking machine, which is composed of CO2 gas and nitrogen, hydrogen and other gases, produces more than 20 kilowatts of power for the laser beam with a laser wavelength of 10.6nm, which can realize continuous work and is widely used. Because it is composed of gas pipes, many problems should be paid attention to when using to avoid adverse consequences, and the following is a simple analysis.
When using, please connect the cooling water, adopt the principle of low inlet and high output, adjust the position of the outlet pipe, ensure that the cooling water is filled with the cooling pipe, there can be no bubbles in the tube, and then turn on the power. Requirements: cooling water using soft water (distilled water or pure water), and often pay attention to the water temperature of the cooling water, the water temperature should be controlled in the range of 25 ° C -30 ° C, not too high or too low, especially in summer, once the water temperature is found to be too high, the cooling water should be replaced in time or shut down for a period of rest; The cooling water in cold areas must not freeze, especially after the laser is stopped, the cooling water must not be stored in the laser tube, so as to avoid the cooling water freezing and causing explosion. (Special attention: users using alternating current, the cooling water tank must be grounded).
The two supporting points of the laser tube should be at the point of 1/4 of the total length of the laser tube to ensure that the flow rate of cooling water is 2L-4L/min, otherwise the effect is not good, it will cause mode jumping, and the light spot will change several points to lead to a decrease in power; The cooling water return port must be flooded in the water tank, otherwise the cooling water in the laser tube will be filled with dissatisfaction every time the machine is turned off.
Pay attention to protect the output window of the laser, avoid the smoke generated during the working process (including the process of debugging the optical path) splashed to the surface of the output window, to prevent the outer surface of the output window from being polluted, the power will decrease, then you can use skim cotton or silk cloth dipped in anhydrous alcohol to gently wipe the outer surface of the output window.
During the debugging process, adjust the laser support point or rotate the laser orientation to achieve the best output effect, and then fix the laser.
Please pay attention to: avoid the accumulation of dust near the high-voltage electrode, keep it dry, and the high-voltage end is as far away from the metal as possible to prevent high-voltage ignition and discharge.
During the use of the laser, there can be no scale formed in the cooling tube, so as not to cause the cooling water to blockage, and the heat dissipation effect will become worse. Once found, the cooling tube can be cleaned with 20% dilute hydrochloric acid to remove scale.
The laser is a glass product and is fragile. When installing and using, avoid local forces.
Rationalize the application of laser tubes, save laser energy, and the best working current of laser tubes is 16 mA.
