Laser marking machine is to use a laser beam to make permanent marks on the surface of various substances. Play the effect of mark is through material surface evaporation show deep material, so beautifully carved patterns, logos and text, laser marking machine is mainly divided into, CO2 laser marking machine, semiconductor laser marking machine, fiber laser marking machine and YAG laser marking machine, the laser marking machine is mainly applied to some more fine and higher accuracy required. Used in electronic components, integrated circuits (IC), electrical appliances, mobile communications, hardware products, tools and accessories, precision instruments, glasses and clocks, jewelry, auto parts, plastic keys, building materials, PVC pipe.

CO2 laser marking machine commonly used laser tube is divided into glass tube and radio frequency tube, the difference between the two is:

1, laser tube: CO2 radio frequency tube laser marking machine adopts imported laser tube; And the glass tube uses domestic laser tube.

2, service life: CO2 radio frequency tube laser marking machine life can reach more than 45,000 hours, generally can be used for 6 years, inflatable can be reused, do not replace; And the glass tube marking machine is only about 2500 hours, generally replace a glass tube half a year, not reusable, to replace.

3, cooling mode: CO2 radio frequency tube laser marking machine adopts air cooling, can ensure long-term trouble-free stable operation; CO2 glass tube laser marking machine uses water cooling, long working time or high water temperature may not light or intermittent light, continuous work has a great impact on the quality of the product.

4, spot size (beam) : CO2 radio frequency tube laser marking machine is 0.07mm spot fine, 3 times more than the glass tube fine, high precision, small thermal diffusion area, can be carved/cut very fine works; CO2 glass tube laser marking machine is 0.25mm light spot thick, poor accuracy, light instability (light intensity is not uniform, sometimes no light), thermal diffusion area is large, cutting edge melting, blackening is obvious, engraving accuracy is poor.

5, stability: radio frequency tube is fully sealed metal tube, the use of 30 volt low voltage power supply, which is directly to avoid the use of high voltage power supply brought about by some of the drawbacks

；由于国产的玻璃管激光切割机使用的是1万伏甚至更高的高压电源，除了不稳定外还有一定的危险性，长时间工作使电源容易老化，且对控制系统有很大的干扰，如操作不当容易烧坏主板，更容易受电压的影响而损坏其正常的功能。