What is the difference between glass tube and metal RF tube of CO2 laser marking machine


The laser marking machine uses a laser beam to make permanent marks on the surface of various materials. The effect of marking is to expose deep material through the evaporation of surface material. Thereby engraving exquisite patterns, trademarks and characters. There are four kinds of laser marking machine. CO2 laser marking machines, semiconductor laser marking machines, and fiber laser marking machines, and YAG laser marking machine. The current application is some occasions requiring finer and higher precision. Such as electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tool accessories. And precision instruments, glasses and watches, jewelry, auto parts, plastic buttons, building materials, and PVC pipes.

There are two kind of   CO2 laser marking machines laser tubes: glass tubes and metal radio frequency tubes.

The difference between glass tube and metal RF tube:

1. Laser tube:

CO2 radio frequency tube laser marking machine adopts imported laser tube;

While glass tube adopts domestic laser tube.

2. Service life:

CO2 radio frequency tube laser marking machine has a lifespan of more than 45,000 hours, generally 6 years, inflated and can be used repeatedly, without replacement;

While glass tube marking machine is only about 2500 hours, generally need to replace every six months. Cannot be reused the glass tube.

3. Cooling method:

CO2 radio frequency tube laser marking machine adopts air cooling, which can ensure long-term trouble-free and stable operation;

CO2 glass tube laser marking machine adopts water cooling, which may not emit light or emit light intermittently when the working time is long or the water temperature is high. , Continuous work has a greater impact on product quality.

4. Spot size (beam):

CO2 radio frequency tube laser marking machine has a fine spot of 0.07mm, which is more than 3 times finer than a glass tube, high precision, small thermal diffusion area, and can engrave/cut very fine works;

CO2 glass tube laser marking machine has a 0.25mm thick spot, poor accuracy, unstable light output (uneven light intensity, sometimes no light), and large heat diffusion area, melting of the cutting edge, obvious blackening, and poor engraving accuracy.

5. Stability:

The radio frequency tube is a fully sealed metal tube, using a 30 volt low-voltage power supply, which directly avoids some of the disadvantages caused by the use of high-voltage power;

Because the domestic glass tube laser cutting machine uses 10,000 volt and even high voltage power supply. High voltage is not only unstable, but also has certain dangers. Working for a long time makes the power supply easy to age. And it has great interference to the control system, such as improper operation. Also it is easy to burn the main board, and it is more vulnerable to voltage which will affect and damage its normal function.

6. Price:

RF tubes are more expensive than glass tubes. For processing some products such as leather, only glass tubes can be fully qualified. Therefore, it is the last word to choose different marking machines according to your own needs.

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