Development of High Power Laser Pipe Welding Process

摘要

NKK has installed the World's first 25kW laser welding machines at its 24-inch pipe mill at the Keihin Works. High-power laser pipe welding process with maintaining high productivity while assuring uniform welds with the base metal has been started to develop. Up to this time, some key technologies including high power laser welding technology and such quality assurance technology as high-accuracy seam tracking and non-destructive inspection suitable for this process have been successfully established.