The laser marking machine can leave a permanent mark on the surface of the item. Its principle is to irradiate the surface of the product with a high-energy laser beam, and evaporate and expose the deep substance, thereby engraving exquisite patterns, characters, two-dimensional codes, barcodes, etc. Laser marking machine is mainly divided into: fiber laser marking machine, CO₂ laser marking machine, YAG laser marking machine, ultraviolet laser marking machine, green laser marking machine, etc.
Picture 1: RF Laser Tube
There are also two types of CO₂ laser marking machines, one is radio frequency tube (RF tube) and the other is glass tube, so what is the difference between these two tubes?
1. The service life of the RF tube can reach more than 45,000 hours, and there is no problem in the general use of about 6 years, while the general use of the glass tube is 2,500 hours, and it needs to be replaced every six months.
2. The air-cooled RF tube can be used stably for a long time without failure. The glass tube is water-cooled. If the continuous processing time of the equipment is too long or the water temperature is not within a constant range, there may be no light or unstable light output, continuous work has a great impact on the quality of the product.
Picture 2: Glass Laser Tube
3. The CO₂ RF tube is relatively stable, it is a fully sealed metal tube and uses a low-voltage power supply of 30 volts, which directly avoids some hidden dangers caused by high-voltage power supplies, while glass tube laser cutting machines are generally using high voltage power supplies above 10,000 volts. In addition to instability, there are certain dangers. Working for a long time makes the power supply easy to age, and has great interference to the control system. If the operation is improper, it is easy to burn out the motherboard, and it is more likely to be affected by the voltage and damage its normal functions.
4. The light spot of the CO₂ RF tube is 0.07mm, the light spot is fine, the precision is high, and the heat diffusion area is small, which can be finely processed. The light spot of the glass tube is 0.25mm, which is more than three times that of the RF tube. The light spot is relatively thick, the accurate is relatively poor, the light output is unstable, the heat diffusion area is large, the cutting edge is melted, and the blackening is obvious.
