Customer buy RFH 355nm UV laser source for car button engraving
Dec 21 , 2022Customer buy RFH 355nm UV laser source for car button engraving
In the manufacturing process of the automobile industry, laser applications are essential, such as laser welding, laser cutting, and laser cleaning at the macro level, which are of great significance for improving quality and efficiency. The plastic is engraved with a shallow layer of laser, and the backlight shines through the plastic part, giving people the feeling of a perfect combination of technological and mechanical sense.
For heat-sensitive plastic materials, the 355nm UV nanosecond laser can effectively deal with it, and can even achieve "cold" processing. This is because the photon energy of 355nm ultraviolet light is very large, which can almost match the energy level of some chemical bonds (ionic bonds, covalent bonds, metal bonds) of all substances in nature, so that the materials undergo photochemical reactions without obvious thermal effects, so Known as cold working. At the same time, the 355nm ultraviolet nanosecond laser has high beam quality (M2<1.2), smaller focus spot (diameter micron level), and very narrow pulse width (25ns), and the processing heat has very little influence, no thermal effect, no The problem of material burning, the heat-affected zone is very small, and it is regarded as "cold" processing, which can greatly reduce the mechanical deformation of the material.
When using a 355nm ultraviolet laser for shallow engraving, the following steps are generally :
Step 1: The high-energy-density laser beam acts on the surface of the material, and the pulsed laser continuously outputs pulsed light.
Step 2: The material absorbs energy, and when it accumulates to a certain extent, it will produce physical and chemical reactions, and leave traces on the surface. Note that this process is fleeting, and the laser beam starts to move according to the preset graphics. A marker for the next position. It is worth mentioning that the high absorption rate of the 355nm ultraviolet material shows its advantages here. The higher the energy absorption, the less the reflection, which means the higher the energy utilization rate, and the faster the surface material can be removed from the body. , so as to leave the required graphic information.
Step 3: As time goes by, the laser beam completes the engraving of the preset graphics according to the designed marking path. By peeling off the superficial layer, the indication patterns required by the buttons are clearly and completely displayed.
Of course, the material of buttons used in different brands of cars is also slightly different. In addition to plastic, it is also possible to use silica gel. For this material, a 355nm ultraviolet laser is also suitable. Through multiple revisions of marking parameters and samples, reliable and stable keys can be obtained. Parameters can be marked in large quantities.
In addition, in addition to the full sense of technology, the marking obtained by laser engraving is permanent, and there is no need to worry about being worn and damaged, and it can meet the needs of repeated use in daily driving.
