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Laser marking

Laser marking uses a laser beam to burn a marking into the surface of the materia

Illustration of Laser marking

The process

Laser marking can be divided into a number of sub-methods wher tha positioning is usually done with angular mirrors.

The type of material and the desired result control the choice of method.

  • Laser removal removes a previously coated layer to create color differences between layers.
  • Laser engraving melts and evaporates the surface.
  • Laser staining causes a chemical reaction in the surface of the material.
  • Laser annealing causes oxidation under the surface of the material.
  • Laser foaming melts the surface of a polymeric material in such a way that gas bubbles are formed.

There is also a further development of laser marking that allows marking of arched surfaces, so-called. 3D laser marking, where the focal depth can be adjusted during the process, allowing the focal point to follow the curvature of an unplaned object.

You can also perform a simpler type of marking with laser cutting machines, which is often referred to as engraving.

Material property-changing operation where martensite in the material is softened so that the hardness decreases slightly, without drastically reducing the amount of martensite.
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Advantages and disadvantages
In comparison with alternative methods
High speed, high quality of marking
can mark metals
can mark plastics
Need no clamping
High automation capability
No physical contact during the marking process
High precision even on small surfaces
High price
Special precaution