Title:
METHOD AND DEVICE FOR MACHINING A METAL WORKPIECE
Document Type and Number:
WIPO Patent Application WO/2021/151789
Kind Code:
A3
Abstract:
The invention relates to a method and a device for machining a metal workpiece (6) with an excitation laser source emitting an excitation laser beam (4) and a processing laser source emitting a processing laser beam (3). The excitation laser beam (4) and the processing laser beam (3) are superimposed in a spatially varied manner at least partially on an impinging region (5) of the workpiece (6) to be machined, and the excitation laser beam (4) has a higher beam intensity than the processing laser beam (3) in the impinging region, such that a plasma and/or a vapour is formed in the impinging region (5) to improve the absorption of the processing laser radiation. According to the invention, the processing laser beam (3) has a power of more than 1 kW and up to 100 kW and the excitation laser beam (4) has a power of more than 0.2 kW and up to 3 kW. The processing laser beam (3) has an intensity of less than or up up 105 W/cm2 in the impinging region (5) and the excitation laser beam (4) has an intensity of more than 105 W/cm2 in the impinging region (5).
More Like This:
Inventors:
SEIFERT MARKO (DE)
LEYENS CHRISTOPH (DE)
FUX VOLKER (DE)
FIEBIGER THOMAS (DE)
BERGER ANDREA (DE)
LEYENS CHRISTOPH (DE)
FUX VOLKER (DE)
FIEBIGER THOMAS (DE)
BERGER ANDREA (DE)
Application Number:
PCT/EP2021/051450
Publication Date:
October 07, 2021
Filing Date:
January 22, 2021
Export Citation:
Assignee:
FRAUNHOFER GES FORSCHUNG (DE)
UNIV DRESDEN TECH (DE)
UNIV DRESDEN TECH (DE)
International Classes:
B23K26/06; B23K26/0622; B23K26/073; B23K26/082; B23K26/21; B23K26/32; B23K26/354
Domestic Patent References:
| WO1999006173A1 | 1999-02-11 |
Foreign References:
| EP2596900A1 | 2013-05-29 | |||
| EP1832377A1 | 2007-09-12 |
Attorney, Agent or Firm:
PFENNING, MEINIG & PARTNER MBB (DE)
Download PDF: