Method and device for laser material processing a workpiece
A technology of laser materials and workpieces, used in laser welding equipment, metal processing equipment, welding equipment, etc.
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[0043] Such as Figure 1a , 1b In laser cutting with the aid of the laser beam 1, a part of the workpiece 2 is melted and / or vaporized at the working point, wherein, then, by the relative movement between the laser beam 1 and the workpiece 2 (cutting direction v) Consists of an irradiated front face across the material thickness of the workpiece 2 . This irradiated front side is marked with 3 and lies on the melt 4 . The laser beam 1 is directed at an angle of incidence in the range of approximately 70° to 110°, in particular approximately perpendicularly, at the workpiece surface 2 a facing it.
[0044] Figure 1a shows a conventional laser cutting process using a circularly polarized laser beam 1 with a wavelength of 10.6 μm, Figure 1b A conventional laser cutting process using a statistically polarized laser beam 1 with a wavelength of about 1 μm is shown. The melt 4 together with the irradiated front side 3 forms a corrugated surface structure which is significantly mo...
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