This news let us breifly talk about precision marking by DOTSLASER`s UV laser machine.
Laser marking technology is one of the largest application areas of laser processing. With the rapid development of the secondary industry, various processing and manufacturing industries have applied more and more lasers, such as laser marking, laser cutting, laser welding, laser drilling, laser proofing, laser measurement, laser engraving, etc. While accelerating enterprise production, it also accelerates the rapid development of the laser industry.
Laser application
Ultraviolet laser has a wavelength of 355nm and has the advantages of short wavelength, short pulse, excellent beam quality, high precision, and high peak power; therefore, it has natural advantages in laser marking. It is not like the infrared laser (wavelength is 1.06μm), which is the most widely used laser source for material processing. However, plastics and a large number of special polymers used as the base material of flexible circuit boards, such as polyimide, cannot be finely processed by infrared treatment or "heat" treatment.
Therefore, the ultraviolet laser has a smaller thermal effect than green light and infrared light. As the wavelength of the laser becomes shorter, various materials have higher absorption rates, and even directly change the molecular chain structure. When processing materials that are sensitive to thermal effects, UV lasers have obvious advantages.
Dotslaser`s water-cooled laser source can provide 355nm ultraviolet laser with an average output power of 1-5W at a repetition rate of 30Khz. The laser spot is small and the pulse width is narrow. It can process fine parts even at low pulses. Under the energy level, high energy density can be obtained, and material processing can be effectively carried out. Therefore, a more precise marking effect can be obtained.
The working principle of laser marking is to use high-energy-density laser to locally irradiate the workpiece to vaporize the surface material or undergo a photochemical reaction of color change, thereby leaving a permanent mark. For example, keyboard keys! Many keyboards on the market now use inkjet technology. It seems that the characters on each key are clear and beautiful, but after a few months of use, it is estimated that everyone will find that the characters on the keyboard start to become blurred. Compared with computers Familiar friends, it is estimated that it can be operated by feeling, but for most people, the key blur is estimated to be messy.
Keyboard marking
The 355nm UV laser belongs to "cold light" processing. The water-cooled UV laser head can be separated from the power box. The laser head is small in size and easy to integrate. At the same time, the laser air-cooled heat dissipation aluminum profile is integrated into the laser head, which has good heat dissipation energy. . Marking on plastic materials, with advanced non-contact processing, does not produce mechanical extrusion or mechanical stress, so it will not damage the processed items, nor will it cause deformation, yellowing, scorching, etc.; therefore, it can Complete some modern processes that cannot be achieved by conventional methods.
Keyboard engraving
Through remote computer control, it has excellent application characteristics in the field of special material processing. It can significantly reduce the thermal effect on the surface of various materials and greatly improve the processing accuracy. Ultraviolet laser marking can produce various characters, symbols and patterns, etc., and the character size can range from millimeters to micrometers, which also has special significance for the anti-counterfeiting of products.
While the electronics industry is accelerating, the process technology of industry and OEM is constantly innovating. Traditional processing methods can no longer meet people’s increasing market demand. Ultraviolet laser precision lasers have small spots, narrow pulse widths, and small thermal effects. The advantages of high efficiency, energy saving and environmental protection, precision machining without mechanical stress, etc., are the ideal improvement plan for traditional craftsmanship.
