Metals can be marked with a CO2 laser engraving machine only by using a metal marking solution (a spray or paste), which must be applied to the workpiece prior to processing. Only when the solution is completely dry, can it be processed. During laser processing the the solution will be burned into the material and once processed the excess must be washed off.
Fiber laser machines, for instance from the Speedy flexx series, allow you to directly mark the metal without the need for additional consumables. Productivity increases as preparation and follow-up processes for applying, drying and cleaning of the metal marking solution is no longer necessary. As time is saved, the machine operator can work on other orders to increase the company’s productivity.
The following contrasts two different ways of marking a stainless steel data plate:
Increased productivity of metal marking