Carbon dioxide laser cutting machine, also known as CO2 laser cutting machine, currently has great advantages in cutting non-metallic materials and is widely used. Below I will briefly introduce this machine from the principle, configuration and application scope of carbon dioxide laser cutting machine.
The reason why carbon dioxide laser cutting machine is called carbon dioxide laser cutting machine is that it is a laser cutting machine using carbon dioxide laser, which belongs to gas molecular laser. The working substance is carbon dioxide gas, and the auxiliary gas is nitrogen, xenon, etc. The laser wavelength is 10.6 microns. It has good stability, and the energy conversion efficiency is 25%, which can be used as a high-power output laser. Laser generation principle: The discharge tube of CO2 laser is filled with mixed gases such as CO2, N2, and He, and its ratio and total gas pressure can vary within a certain range (generally: CO2: N2: He = 1: 0.5: 2.5 total gas pressure is 1066.58pa). Generally, the ratio is fixed after you buy the laser tube. Any molecule has three different forms of motion. The first is the movement of electrons in the molecule, which determines the energy state of the electrons. The second is the vibration of atoms in the molecule, that is, the atoms keep vibrating periodically around their equilibrium positions. This movement determines the vibration energy state of the molecule. The third is the rotation of the molecule, which determines the rotation energy state of the molecule. If you don't understand this part, you can go to Baidu for relevant knowledge. CO2 lasers use the transition between the vibration and rotation energy levels of CO2 molecules to generate lasers.
The CO2 laser cutting machine we are talking about here refers to the CO2 glass tube laser. In fact, there is also a radio frequency tube for CO2 lasers, which is generally used in laser marking machines. Glass tubes are also used in marking machines. However, compared with radio frequency tube marking machines, in terms of laser marking, glass tube lasers are not stable enough under long-term continuous working conditions, and have a short service life, and the marking efficiency is not as good as that of radio frequency tubes. However, in terms of cutting, glass tube lasers are still basically used. Because the depth requirements for cutting are generally high, it is more economical to make high-power and low-cost glass tube lasers. The CO2 laser cutting machine uses water cooling, and the cooling water circulates in the glass tube. In the working state, the glass tube laser will generate high voltage, so never touch the laser when the laser cutting machine is running.
In terms of application, the CO2 laser cutting machine is mainly used for cutting non-metallic materials, such as cloth. Some holes or old colors in the jeans we wear are processed by this CO2 laser cutting machine. In addition, leather, plastic, acrylic, etc. can also use CO2 laser cutting machines. If the power is relatively large, the CO2 laser cutting machine can also cut metal, but the accuracy is generally not too high, and it cannot cut too thick. Compared with the fiber laser cutting machine, it is still relatively insufficient, so it is less used in cutting metal.