The importance of ultraviolet Laser marking machine in industrial manufacturing
Working principle of ultraviolet Laser marking machine
The working principle of UV Laser marking machine is realized by photochemical ablation, that is to say, it depends on the high energy of laser to generate organism or chemical reaction on the surface of the object, and then form a mode of marking. It mainly uses the cold light source, the wavelength is only 355nm, the focus spot diameter is smaller, all kinds of materials have high absorption rate of ultraviolet light, and the thermal influence is also small (negligible), so its marking effect is more exquisite and fine. For any industry identification information solution, it can finish the task delicately, and plays an especially important role in the identification industry.
The wavelength of fiber Laser marking machine is 1064nm. It belongs to infrared light at noon, which is easy to produce high temperature, and some materials will have the feeling of burning. But now the fiber Laser marking machine is the mainstream of the market in metal material marking. The fiber Laser marking machine will not change the metal surface too much. UV Laser marking machine is suitable for processing almost all materials except copper. UV is less used in metal, the price of UV marking machine is expensive, and the power is relatively low (at present, it is mainly 3W and 5W). If the UV marking function reaches 10W-20W, then the material is not a problem.
The structure of the ultraviolet Laser marking machine is the same as that of the fiber Laser marking machine. The optical components of the fiber Laser marking machine and the ultraviolet marking machine are not universal. The wavelength of the ultraviolet laser is 355nm, and the wavelength of the fiber laser is 1064nm. The wavelength of the ultraviolet laser is the wavelength after frequency doubling on the basis of 1064nm. The technical difficulty is higher Compared with fiber Laser marking machine, lens has different coating thickness and material, so it can not be used in general.