What is the working principle of the color laser marking machine, and does it have any requirements

The principle of the laser marking machine is to vaporize or oxidize the surface of the material to produce a marking effect through the high temperature generated by laser focusing. Generally, marking is the natural color of the material, which is used for industrial marking or numbering, barcode, etc. Color marking is not so high technology now, on the surface of stainless steel material "white" and "black" are commonly used, that is, low frequency and high frequency marking effect.

Other colors can also be played by adjusting the marking parameters, but they are not so accurate and can be adjusted, so if you want to play color, it is generally not made by laser marking machine, or more silk screen printing.

Color laser marking machine, to provide high contrast color decoration effect for marked items, generally speaking, color laser marking machine by using two lasers on plastic, metal and other materials that need to be marked.

Substrates are marked with the correct laser output to meet the user's need to make high-contrast black-and-white or color imprints on a wide range of plastic and metal surfaces.

Unlike ink deposition and those that involve the application of colored powders or thin films, color laser markers are more advanced lasers that can change the color of plastics, a typical physical effect that is related to the thermal decomposition of polymers in an oxygen environment, and can produce a variety of colors on the surface of metal raw materials.

There are requirements for the application of PVC material, which is a polymeric non-crystalline vinyl, which has good endurance to oxidants, reducing agents and strong acids. Carbon dioxide laser marking PVC material marking display yellow-red is not so popular in many cases, and near-infrared lasers such as fiber laser marking machine and semiconductor laser marking machine, the wavelength of their two is about 1060nm, but this wavelength can mark black, this black is similar to the black of the ink inkjet printer, which is the most acceptable color for customers, and this type of marking is more and more used in PVC materials.

Excerpted information, I hope it can help you.

In recent years, with the rapid development of laser technology, the application level of laser technology has gradually improved, and color laser marking is a new type of laser marking process. It is mainly used for stainless steel materials, which can carve colorful patterns.

It has been found that the key to achieving metal surface colorization is to tightly control the pulse energy and pulse width of the laser. High-frequency, low-pulse lasers are suitable for this application, while fiber lasers are the most suitable choice due to their adjustable pulse parameters and good beam quality. By tightly controlling the heat injection, the fiber laser is able to make color marks on metal surfaces.

Unlike ink deposition and those that involve the application of colored powders or thin films, color laser markers are more advanced lasers that can change the color of plastics, a typical physical effect that is related to the thermal decomposition of polymers in an oxygen environment, and can produce a variety of colors on the surface of metal raw materials. The color engraving on the surface of stainless steel mainly changes in the following color order: orange-red-purple-blue-green-blue-blue-green-green-yellow-green-clear-red.

1.The working principle of most laser marking machines is similar, mainly a marking method that uses a high energy density laser to irradiate a certain part of the workpiece, so that the surface material vaporizes or undergoes a chemical reaction of color change, so as to leave a permanent mark.

2.The ultra-fine laser beam after focusing is like a tool, which can remove the surface material of the object point by point, and its advancement lies in the fact that the marking process is non-contact processing, and does not produce mechanical extrusion or mechanical stress, so it will not damage the processed item; Due to the small size of the laser focus, the small heat-affected area, and the fine machining, it is possible to complete some processes that cannot be achieved by conventional methods.

3.Laser processing technology is a technology that uses the characteristics of the interaction between the laser beam and the material to cut, weld, surface treat, punch, micro-machining, as well as as a light source and identify objects.

4.All in all, the laser marking machine adopts advanced laser technology, which mainly involves the comprehensive technology of light, machinery, electricity, materials and detection.