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Verfahren zum Verschweissen von zwei spaltlos ueberlappend aneinanderliegenden Werkstuecken und Vorrichtung zur Durchfuehrung des Verfahrens

Laser beam welding process and jig for carrying out this process
 
: Imhoff, R.; Zwick, A.

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Frontpage ()

DE 1989-3926781 A: 19890815
DE 1989-3926781 A: 19890815
DE 3926781 C2: 19930909
B23K0026
Deutsch
Patent, Elektronische Publikation
Fraunhofer ILT ()

Abstract
Laser beam welding processes or similar high-energy laser beam welding processes, in which two adjacent workpieces (1, 2) have a coating (3) between them with an evaporating point below the melting point of the workpiece material, and in which a gas flow (5, 5') directed at the machining point (4) is used. In order to improve the above-mentioned process so that coated workpieces can be welded without gaps and using degasification through the welding cavities of the machining point (4), a gas flow (5, 5') which promotes the degasification of the evaporated coating (3') out of the welding capillaries (7) of the processing point (4) is used in addition to flushing of the machining point (4) by means of an inert gas or plasma working gas (6).

: http://publica.fraunhofer.de/dokumente/PX-38965.html