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AssigneeFrauenhofer Society for the Promotion of Applied Research
InventorsHolger Schluter, Axel Zwick, Konrad Wissenbach, Edwin Buchter, Frank Reichel, Winfried Barkhausen
Estimating the term…
A laser beam apparatus for the removal of surface layers from work pieces with a beam-emitting head that may be guided by hand and that is equipped with focusing optics, which is connected to laser apparatus that generates a laser beam so as to admit light, which exhibits a beam-deflecting direction that moves on a pre-determined pathway in an oscillating manner, which covers the laser beam radially with a point and releases it through an emission opening that faces the work piece, and which has a distance retainer that permits the adjustment of the distance of the beam-emitting head from the work piece. In order to achieve the possibility of its use under freehand guidance with great mean power outputs in the course of which acceptable area coverage rates, or rather processing times are to be rendered possible, the laser beam apparatus is embodied in such a way that the distance retainer is the point of the beam-emitting head that covers the laser beam radially, that the laser beam may be oscillated by the beam deflection apparatus on a pre-determined pathway by means of an exit opening of the distance retainer that has been adapted to the pathway, and that the focusing optics can alter the focusing of the laser beam depending upon the beam deflection in the sense of a focus that lies on the surface of the work piece.
A laser beam apparatus for removing surface layers from workpieces, said apparatus comprising:
A laser beam apparatus according to claim (15) 1, characterized by the fact that said focusing optics (10) comprise an auto focus apparatus for the laser radiation.
A laser beam apparatus for removing surface layers from workpieces, said apparatus comprising:
A process for the removal of surface layers from work pieces with a processing head that has focusing optics and a beam deflection apparatus that emits a laser beam which is guided freehand, wherein the laser beam, while it is being guided freehand, is oscillated by means of beam deflection with a focus that lies on the surface of the work piece.
A process for the removal of surface layers from workpieces, the process including the steps of providing a processing head that exhibits focusing optics (10), providing a beam deflection apparatus that emits a laser beam (12), and connecting said processing head to a laser apparatus that produces a laser beam so as to feed in light, characterized by the fact that the process is undertaken for the purpose of de-scaling non-rusting steel that has a layer of scale from hot rolling with an intensity of about 10.sup.6 to 10.sup.7 W/cm.sup.2, given an energy density of about 100 J/cm.sup.2 on the surface of the workpiece and a scale layer 3 to 15 um, in course of which protective gas is directed at an irradiated area of the surface of the work piece.
Dependencies are inferred from the claim text.