Process limit imposed by the occurrence of undercuts during high-speed laser welding

High-speed laser welding is a very efficient process that results in weld seams of high quality. The limited by the occurrence defects, such as humping and undercuts. It was found transition from without defects to with undercuts occurs when speed limit exceeded. also occur at slightly lower feed rates than humping. Thus, it concluded represent upper high-speed may be seen precursor regime.