“Can I engrave metal with a CO2 laser?”
When you engrave metal with a CO2 laser, you need to apply a paste or spray. It then needs to dry completely before the laser process begins. Your desired marking is then burned into the metal with your laser. When the process is completed, you need to wash the remaining paste residue off your workpiece. This operation requires a fair amount of laser energy, so the laser needs to be moved at a very low speed. You can achieve a sharp-contrast on some metals this way, but the pastes and sprays tend to be quite expensive.
However, metal can be marked directly – without the use of additional equipment – with a Trotec fiber laser. A clear distinction can be made between engraving, annealing marking and coating ablation, and a fiber laser is capable of all these processes.
Machines from the Trotec Speedy Flexx series are all equipped with a CO2 as well as a fiber laser source. You can use both sources, without having to manually change any settings as you go, which will reduce your work time greatly. Metal marking has never been so easy; Simply assign the desired laser source to each colour of the graphic, and you’re ready to go!