How does the fiber laser marking machine engraving different color[1] on stainless steel?
We should know that there are 3 different ways to make the stainless steel coloration. First, Generate colored oxide. Second, By the chemical, electrochemical or under the action of the laser, a thin layer of colorless transparent film is generated on the surface of stainless steel, The oxide film thickness by precisely controlled. Because of diffraction effects, oxide films of different thicknesses can be presented in different colors. Third, In the presence of a mixed state of colored oxide and oxide film.
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How to mark the different colors on stainless steel by fiber laser marking machine?