Capabilities from annealing
The traditional process of annealing is performed with the laser system defocused (to allow for a greater spot size to be used for heating the material), as well as the marking speed set very low, since heating does not happen quickly.
Laser operators can produce deep black (partly even colored) and homogenous markings on stainless steel with this technique, but there are also resulting negative effects due to the larger spot and slow marking speed that is used:
- Small markings can appear fuzzy or unclear
- Increased marking times, compared to more efficient metal marking techniques such as polishing or engraving
- Corrosion can occur from the intense heat applied to the material