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Views: 47 Author: Site Editor Publish Time: 11-30-2021 Origin: Site
Glass products are very common in life, but glass is fragile. Therefore, marking and engraving on the surface of glass products requires high craftsmanship. The laser marking machine is non-contact processing, with short processing time, can form a very fine beam, and achieve fine marking on the tempered glass material. Leapion Laser shares the marking process of laser marking machine on glass products.
1. The laser marking machine uses a single laser radiation to produce a clear visible mark on the glass, but the direction of the crack and the stress pattern will expand in the direction perpendicular to the laser movement.
1) In a short time or even a few days after the mark is printed, these cracks perpendicular to the moving direction of the laser will form new cracks, which will extend to the vicinity of the original mark to form fragments, which will affect the clarity of the mark.
2) Using multiple laser radiation, the area adjacent to the marking area is heated by heat conduction, so that these areas form a stress gradient and reduce the possibility of secondary cracking.
3) This method is very effective for marking on soda lime glass and borosilicate glass. One-time laser radiation is more effective for marking on fused silica glass and quartz glass, because these two materials have very low expansion coefficients.
2. The laser marking machine uses a series of ring-shaped cracks to form text, bar codes, square or rectangular codes and other shape code patterns.
The glass produces low-density ring-shaped cracks through heating and cooling cycles. When the glass is heated, it expands and squeezes the surrounding materials. When the temperature rises to the softening point of the glass, the glass quickly expands to form a low-density material that protrudes from the glass surface.
3. The laser marking machine uses the same heating and cooling process, both of which change the surface of a certain volume of glass. However, the size of the spot used in this method is relatively large, and the boundary between the two density regions is not as clear as the ring crack method.
The marks produced by this method are not immediately visible, requiring a little pressure before starting to produce grid-like cracks along the laser marking area. Use the generated non-fragmented crack-like stripes to fill patterns to form text, graphics and various codes. Because this method requires a pure surface, clear marks can be printed with high-quality automotive glass.
It can be seen that the laser marking machine is non-contact processing with short processing time and fine marking lines. It is very suitable for marking patterns or text information on the surface of glass materials. Any complicated text, graphics, images, trademarks, LOGO, barcodes, etc. QR code, production batch number, autograph, etc.
Compared with ordinary marking methods, laser marking technology has high processing efficiency, beautiful and detailed marking products, no need to consume materials, environmental protection, energy saving, and convenient maintenance. It is a common choice for glass product processing.
For more information and inquiries about laser marking machines, please contact Leapion Laser.
