Engrave and mark metals with CO2 or fiber lasers?
The galvo or fiber laser is known as the seamless tool for metal marking to achieve productivity and quality. Pre or post-treatment of the metal is not required, as the outcome of the marking is even and highly detailed.
Uncoated metals can be marked with a CO2 laser engraving machine using only laser marking solutions. The metal marking solution must be applied to the workpiece. It first needs to dry and then will be burned into the material during the laser process. Once the laser process has finished, the excess marking paste must be washed off.
The marking of sensitive surfaces of high-priced workpieces e.g. watches with laser marking sprays is critical due to cleaning. Furthermore, it is important to note that marking solutions are classified as hazardous materials. Thus, the corresponding safety regulations must be adhered to in order to protect your own safety and that of your employees.