According to the variable-curvature girth
welding device based on
laser arc complex coaxial
energy modulation, through reasonable distribution and arrangement of energy of three beams of auxiliary
laser and main
laser, the problem that energy focusing of variable-curvature
welding is too large is effectively solved, and the
welding seam forming quality is remarkably improved; a real-time
monitoring system combining
temperature sensing and visual sensing is adopted, welding parameters and the like are rapidly and accurately regulated and controlled through a central controller, accurate control over the complex curved surface
welding process is achieved, in the actual
welding process, all heat source systems and wire feeding mechanisms are started, the welding parameters are initialized, and the welding quality is improved. The coaxial
infrared thermometer and the visual sensor continuously monitor the state and curvature change of a
molten pool, the central controller automatically adjusts laser power and
electric arc parameters according to real-time temperature data, and particularly when an area with large curvature change is welded,
energy distribution is compensated through three beams of auxiliary laser, so that the welding quality is improved. The defects such as poor welding seam forming and splashing are effectively inhibited.