Laser welding head for sleeve-to-tube welding.

摘要

Sleeve is welded inside a tube by expanding the sleeve to fit closely within the tube, positioning a weld head having a focusing lens, mirror, and spring biased focal arm, adjacent to the weld area and directing a high power laser beam onto the welding head. Focusing and reflecting the beam onto the weld area, and rotating the weld head at a speed of between 4.0 and 7.5 rpm around the weld fusion path to weld the sleeve to the tube. The weld area is shielded with shield gas, and the laser beam operated at between 500 to 700 watts.