Effect of black spot and oxide skin removal on copper parts

Laser cutting is one of the thermal cutting methods, using the focused high power density laser beam irradiate the workpiece, so that the irradiated material quickly melt, vaporize, ablative or reach the ignition point, at the same time by means of the beam coaxial high speed air blowing molten material, so as to achieve the workpiece cutting. During the cutting process, the laser beam will cause black spots on the brass surface to oxidize. The effect picture is shown in the above figure.