A common process for welding thick metal parts is submerged arc welding (SAW). Typically, SAW and other processes require beveling the workpieces to give the torch access to the joint root. The multi-pass process requires high heat input to the weldment and can generate a large heat affected zone (HAZ) along with distortion.
A new laser technology developed by Israeli manufacturer Civan Lasers promises to overcome those limitations. The company’s dynamic beam laser (DBL) enables single-pass welding of metal parts 25 to 50 millimeters thick. Operating at megahertz frequencies and power ranging from 7 to 28 kilowatts, the technology gives engineers more control over a broader set of welding parameters.