METHOD AND DEVICE FOR MACHINING A METAL WORKPIECE
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 superimpose...
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Main Authors | , , , , |
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Format | Patent |
Language | English French German |
Published |
07.12.2022
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Subjects | |
Online Access | Get full text |
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Summary: | 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). |
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Bibliography: | Application Number: EP20210701522 |