| 摘要 |
<p>A laser welding apparatus (320) for clad welding the interior surface of a tube (20) is disclosed. The apparatus includes a rotating sleeve (324) positionable within the tube. Located within the rotating sleeve is a fiber optic cable (340) and a filler passage (386). The fiber optic cable receives laser energy from a laser (344). The filler passage receives filler material from a fillermetal delivery system (330) that synchronously moves with the rotating sleeve. Positioned at the end of the rotating sleeve is a welding head (322) which includes a head aperture (394) and a laser energy directional modification assembly (392). The laser energy from the fiber optic cable is transferred through the laser energy directional modification assembly and through the head aperture to a selected weld location on the interior surface of the tube. The filler metal from the filler metal delivery system is also conveyed through the head aperture and intersects with the laser energy at the selected weld location. The filler metal fuses with the interior surface of the tube to produce a clad weld.</p> |
