Patent ID: 6107597
Filing Date: 2000-08-22
Classification: B23K

Abstract:
Device for welding longitudinal seams of metal tubing, comprising:(a) a laser welding device with a laser welding head which is inclined at an angle with respect to vertical; and(b) a radiation trap disposed adjacent the laser welding head for trapping reflected laser beams, the radiation trap includes a metallic housing with at least one water-cooled wall and an inner surface which is blackened, and the radiation trap is arranged relative to the laser welding head in such a way that the reflected laser beams are guided into the housing, wherein the at least one water-cooled wall includes a roof wall, an inner surface of the roof wall is oriented at an angle of 2 .alpha. with respect to horizontal, wherein .alpha. is the angle of inclination of the laser welding head relative to vertical.