Laser marking machine is beaten out with a laser beam in different kinds of material surface on forever.
Long beautiful mark;
With good beam quality, small volume, high speed, low power consumption, high efficiency, light spot fine, do not need supplies, integrated design, long working life, convenient installation and free maintenance etc laser equipment on the glass in general there are three methods can be used to control the glass type and amount of cracks on the surface: the first method is to use multiple laser radiation with a laser radiation can be visible on the glass to produce a clear-cut mark, but the direction of the crack and stress pattern will extend in the direction perpendicular to the laser mobile.
Tag printing and even a few days later, after a short time these cracks in vertical direction of laser movement will form a new crack, extension to the original mark near the outside area formed fragments, thus affect the clarity of the tag.
Using multiple laser radiation, with mark area adjacent area through heat conduction is heated, so that these regional formation stress gradient, reduce the possibility of a second burst.
In this way on the soda-lime glass and boron silicate glass is very effective.
A laser radiation on the fused silica glass and quartz glass is more effective, because these two kinds of material expansion coefficient is very low.
The second method is to use discrete points to form annular crack by using a series of circumferential crack forming words, shape, a square or rectangular bar code and other code design.
Glass by heating and cooling cycle from low density ring crack.
Glass caused expanding extrusion materials around, heating when the temperature rises to the glass to softening point temperature, the rapid expansion of glass to form a bulge on the surface of the glass dome of low density material, due to the light energy is gaussian distribution, so the light spot center at higher temperature.
When the high return to starting position, close to the center of the circular crack in this area.
Formed in the low density area and standard density area between the joint form stable circular crack.
This method is suitable for the ordinary optical materials reinforced glass and tempered glass, chemistry or normal sodium calcium on float glass standard.
Cracked surface cracks and the third way is using the same heating and cooling process, is to make a specific volume of the surface of the glass.
But the third method used light spot size is larger, the joint density of two area boundary annular crack method did not clear.
Marks caused by this method can not immediately visible, requirements after a little pressure to lattice cracks along the laser marking area.
With no fragments produced by cracking stripe filling design form text, graphics, and all kinds of code.
Because this approach requires surface of pure quality, with high quality auto glass so can print out the clear mark.
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