Protective gas device for laser operating units as in motor vehicle body welding has outlet nozzles directed to the laser processing regions

摘要

A protective gas device (1) for laser operating units comprises one or more gas outlets (11,12,13) at the work piece or work piece holder (8,9) with directed gas flows positioned at the laser working train (6). A wide gas stream is produced across or inclined to the working train or there is a combined gas flow along the train.