There are a wide range of materials that are known to be colour markable including stainless steel, titanium, chrome plate and transition metals. The specific material grades and surface finishes can have an impact on the marking process as can the thickness of the material.
Brushed surfaces are more difficult to mark with a consistent colour mark due to the magnitude of the roughness in terms of a peak to trough being significantly larger than the depth of oxides being generated. In these cases, the grain of the material can still be seen in the mark. Polished surfaces have been found to be far more consistent in terms of colour. In this case, the grain of the mark is more aligned with the marking direction.
Color/Colour Laser marking on stainless steel, fiber laser marking machine, Marking Colors on Titanium, Color Laser Engraving Metal, Color laser engraving on metal by MOPA fiber laser marking machine
Colour laser marking is the controlled “growth” of a native metal oxide at the surface of the metal. Certain, more reactive, elements of the metal react with atmospheric oxygen to form a stable metal oxide. MARKOLASER Laser provides the greatest flexibility in applying heat controllably to create bright colours without the limitations to darker hues impacted by heat accumulation.
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