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Laser Engraving

Laser Supported Volume Ablation

Laser engraving is a laser supported, high-volume ablation process, which offers excellent opportunities for making high-precision printing, embossing, erosion, or injection tools. The great advantage over the conventional spark erosion technique consists in the fact that laser engraving is extremely flexible as to geometry and material. In addition, of course, it is free of wear.

The laser engraves the material surface down to some 10 µm in depth. Laser engraved marks are exceptionally durable and can only be removed by heavy grinding. Therefore laser engraving is used for forgery-proof product marking e.g. of ball-bearings.&nb

Repeated scanning of a two-dimensional outline, commonly used with deep marking and trimming, will yield to a 2½ -dimensional ablation with flat bottom and tapered walls. When processing three-dimensional  data, walls with defined conicity and bottoms with arbitrary topography can be realized. For the production of micro injection- or forming molds this manufacturing method, based on laser engraving,  is entering the market

Laser Engraving in Tool-steel

Laser Engraving in Tool-steel

Two ablation mechanisms must be differentiated, depending on the applied power density. Low intensities lead to sublimation of the material, with ablation rates of up to 0.5 cubic mm per minute in steel. At higher power densities, the ablation process changes and sublimation-induced fusion displacement takes place. Ablation rates in metal of more than 10 cubic mm per minute can then be achieved. In the case of sublimating materials such as silicon nitrite or graphite, the ablation values can be many times more than this.

 

Micro Engraving of Printing Plates

Micro Engraving of Printing Plates

The plastic printing plates commonly used for printing of larger plastic components in pad printing are subject to heavy wear. Picosecond lasers allow engraving printing pads free of burrs into the metal (e. g. steel). The laser engraving on the material surface is applied in spots in order to optimize the color distribution and thus a microstructure with very small supporting spots is created. The laser making of metal printing plates with the laser is now much more eco-friendly and flexible in comparison to common etching techniques.  

Ring Engraving

Ring Engraving

The laser engraves inner, outer and front sides of rings. The laser engraving is deeper and offers higher contrast than any engraving by hand produced in reasonable time.

For this application we recommend the laser system: Easy Jewel

 

Laser Engraving on Crystals

Laser Engraving on Crystals

Laser engraving on a rock crystal: the engraving is a scanned handwriting and is reproduced calligraphically and absolutely true to the original.

For this application we recommend the laser marker: PowerLine E

Product recommendation

Product recommendation

For laser engraving of metals we recommend the Opens internal link in current windowPowerLine Series