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Title
Verfahren zum Bearbeiten von Werkstuecken mit Laserstrahlung
Date Issued
1997
Author(s)
Neuenhahn, J.C.
Beersiek, J.
Patent No
1996-19600627
Abstract
To weld and work workpieces (10) with a laser beam (11), with a protective gas, an arc is struck in addition to the laser beam near the working zone (12) before starting work with a shrouded laser-induced plasma (14). The shrouded plasma (14) is generated together with an inert gas fed to the working zone (12), with an ionisation energy below that of the inert gas and/or induced by a power increase from the initial pulse. The gas feed and/or pulse parameter is controlled until the following strike. ADVANTAGE - The technique gives a non-contact strike action without the need for additional movement along numerical control axes. It gives an accurate synchronising of the arc strike, the laser beam action and the workpiece movement, without damaging feedback at the machine control.
Language
de
Institute
Patenprio
DE 1996-19600627 A: 19960110