Close this search box.

Follow us!


Znakowanie laserowe
Laser marking is the most popular technique for marking items today. The ability to generate letters, numbers, characters, barcodes, QR codes and even any shape makes it the most versatile technique of all laser processing methods. Depending on the process parameters, you can freely control the contrast of the resulting symbol while maintaining high precision and marking quality.
Laser marking can be divided according to the method of applying marks:
  • engraving
  • decolorization
  • wyżarzanie

Photo gallery

Laser marking: ablation and engraving

Laser ablation and laser engraving are processes used to laser mark almost all materials, especially metals, plastics, ceramics and films. Both methods are based on using short laser pulses to vaporize the outer layer. In the case of engraving, the outer layer is understood to be the base material, so the processing produces a recess in the component, which can be further processed later to accentuate the color difference. In contrast, in the laser ablation technique, previously applied coatings are removed from the component, while the base component remains almost unchanged.

Laser marking: foaming and decolorization

Decolorization and foaming are laser marking methods used primarily in plastics processing.

As a result of heating the surface by the laser beam, there is a local change in its color to a lighter or darker one, i.e. its discoloration. This is determined by the chemical composition of the material and the nature of the transformations occurring in it due to interaction with the laser radiation. For example, when processing a bright component, soot particles are formed, which darken the created inscription.

The foaming process proceeds in a different way: the laser beam partially melts the surface of the component, and inside the resulting liquid gas bubbles are formed, which further increase their volume. The result is something similar to plastic foam. Light incident on the treated surface – due to the presence of gas particles – is reflected, making the altered area appear brighter than the base component.

Laser marking: annealing

Annealing is a relatively new technique for marking components, and research is constantly being conducted to further develop and improve this method. Its main area of application is the automotive industry and semiconductor technology. It is also increasingly used in medical device manufacturing processes.

As a result of the delivery of laser energy to the component, the temperature of the material increases, which in the case of some metals (such as steel) causes a change in its color. This is conditioned by the formation of oxidation layers on the surface of the material, the color of which is closely related to the temperature of heating the element. As a result, the external structure of the surface is not affected, and the resulting marking is clear and legible.

In our laboratory in Wroclaw, we perform laser engraving and marking services on details made of various types of metals and plastics. You can read more about it here.
Scroll to Top