METHOD FOR PRODUCING BOREHOLES

The invention relates to a method for producing boreholes with a large aspect ratio, in metallic materials, layered metallic materials and materials comprising at least one ceramic layer, by means of laser radiation, the intensity of the laser beam being adjusted according to the required modificati...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WILLACH, JENS, KREUTZ, ERNST, WOLFGANG, SCHULZ, WOLFGANG, TRIPPE, LENA, PETEREIT, JOCHEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing boreholes with a large aspect ratio, in metallic materials, layered metallic materials and materials comprising at least one ceramic layer, by means of laser radiation, the intensity of the laser beam being adjusted according to the required modification of the borehole radius in relation to the borehole depth. The spatial distribution of the intensity of the laser beam, in relation to the changing bottom of the borehole, is adjusted in such a way that the intensity I inside the segment w0 at a distance w from the laser beam axis falls off monotonously by the value DeltaI, and values are set for the spatial modification DeltaI of the intensity I and for the segment w0 that are high enough that the borehole radius rB is larger than the segment w0, which is the radius of the laser beam (rB>w0).