Physical differences between fiber laser marking machine and carbon dioxide laser marking machine

Fiber laser marking machine and carbon dioxide laser marking machine are the two most commonly used laser marking machines, each accounting for 6:4. The proportion of fiber laser marking machines is relatively large, and the market is biased towards fiber laser marking. machine. There are obvious physical differences between CO2 laser marking machines and fiber laser marking machines, and their processing objects are also completely different.
        Carbon dioxide laser is a gas beam obtained by exciting carbon dioxide molecules, and its wavelength is 10.6μm, while fiber laser marking machine uses laser beams to permanently mark the surface of various substances, but its wavelength is only 1.08μm. Carbon dioxide laser processing propagates laser light through a mirror, and propagates in an optical path that is isolated from the outside air. This process will cause dirt to attach and need to be cleaned. Moreover, the mirrors will also wear out due to absorbing trace amounts of laser energy and need to be replaced. Fiber laser marking machine processing is transmitted by optical fiber, no reflection part is required, and the laser is propagated in the light-guiding fiber isolated from the outside air, so the laser is almost not lost. It can be seen that the life of the fiber laser marking machine will be relatively much longer.
      The photoelectric conversion of CO2 laser oscillator is between 10~15%, while that of fiber laser oscillator reaches 35~40%. The higher the photoelectric conversion rate, the lower the electrical energy dissipated, and the better the control of power consumption. And in general, the carbon dioxide vibrator has higher requirements for cooling, and the vibrator of the fiber laser marking machine is only about 1/2~2/3, so the processing of the fiber laser marking machine is relatively good. More energy efficient. However, from the point of view of the processing field and cutting quality, the carbon dioxide laser marking machine will be superior to the fiber laser marking machine. The carbon dioxide laser marking machine can be applied from thin plates to thick plates. The most important point is that the processing technology is also very mature, and the processing quality is beyond doubt. If it is cut with a fiber laser marking machine, it depends on its thickness. If the thickness is greater than 3.0mm, it will be more difficult to cut. In addition, the cutting surface will also be rougher than carbon dioxide.

     The carbon dioxide laser is compared with the concept of fiber laser, but also from the comparison of the components - the comparison of the vibrator. There are also drive shafts called X, Y, and Z in the composition system of the laser processing machine. The motion performance and control performance of this drive shaft are also a big component. No matter how fast the processing speed is, if the motion performance of the XY drive axis cannot be determined, it will be hopeless to shorten the processing time. To clearly show the difference in processing speed, it is necessary to improve the motion performance of the drive shaft, especially the acceleration and deceleration capabilities during cutting. If there are many thin plates in the processed material, the production volume is relatively large, and if you want to control the processing cost, it is best to use a fiber laser marking machine. If processing thick plates exceeding 6.0mm, or need to achieve a certain processing quality, it is more suitable to use CO2 laser marking machine.