DEVICE AND PROCESS FOR LASER-WELDING A PIPE

摘要

An apparatus for laser-welding a pipe (14) along its inner periphery with a probe (1) that can be introduced into the pipe (14) contains within the probe (1) means (73-76) with which part of a flow of protective gas that moves within the interior is split off before reaching an outlet opening (45) for a focused and deflected laser beam (59), and with an axial flow component that is directed towards the outlet opening (45) to the outer surface of the probe (1). By this means, the condensation of weld metal in the area of the outlet opening (45) and within the probe (1) is reduced. 19