Glass products are widely used in construction, daily use, medical treatment, chemistry, home, electronics, instruments, nuclear engineering and other fields. Glass has fragile characteristics, so carving on the surface of glass products requires high technology. The laser marking machine is non-contact processing, with short processing time and fine marking lines, which is very suitable for marking patterns or text information on the surface of glass materials. There are several ways to mark glass with laser.
Multiple laser radiation method
One time laser radiation is used to produce obvious marks on the glass surface. After a few days, the laser extends to the area near the original mark to form fragments. Then, multiple times of radiation are used to heat the areas adjacent to the marked area through heat conduction, forming stress gradients in these areas, thus reducing the possibility of secondary fracture. This method is very effective for marking soda lime glass and borosilicate glass. Small glass bottles containing liquid medicine and glasses in daily life can be marked with this method.
Method of forming ring crack at discrete points
A series of annular cracks are used to form characters, bar codes, square or rectangular codes and other shape code patterns. Generally, more CO2 laser marking machines are used in this method, and the CO2 laser marking machine sets a parameter for marking code on glass, resulting in fewer cracks. Ring cracks are formed at discrete points. The glass generates low-density annular cracks through heating and cooling cycles. When the glass is heated, it expands and compresses the surrounding materials. When the temperature rises to the softening point of the glass, the glass expands rapidly to form a dome of low-density material protruding from the glass surface.
By using CO2 laser marking machine, merchants can mark exquisite patterns on the glass surface to improve the grade of glass.
Method of generating cracked surface cracks
The process of heating and cooling is used to change the surface of the affected glass. This method is not immediately visible, but it starts to generate turtle shaped cracks along the laser marked area after a little pressure is applied. The cracked surface glass not only has the property of safety glass, but also can play the role of ice crack non full transparency. Therefore, it is widely used in indoor decoration, such as partitions and background walls, and can also be used for glass furniture, which is deeply loved by consumers.
Laser online marking machine marking glass
The laser can form an extremely fine beam to achieve fine marking on glass. Any complex text, graphics, images, trademarks, logos, bar codes, two-dimensional codes, production batches, autographs, etc. can be completed by the laser marking machine.
