The invention provides an
automation welding system method of hollow stationary blades of a
steam turbine. By adopting the method, the existing manual
welding method is replaced, the labor intensity of workers is reduced, the working efficiency is improved, the difficulty that
welding equipment is hard to recognize and adjust a welding position owning to consistency difference before groove welding of an inner arc sheet and a back arc sheet of the hollow stationary blade is overcome, the problem that common automatic welding equipment can not adjust the welding position in real time accordingto the features of a groove of a workpiece is effectively solved, the process flow of the existing manual welding is improved, the number of welding seams is reduced and
welding deformation is reduced. The inner arc sheet and the back arc sheet of the hollow stationary blade of the
steam turbine are assembled on a fixture and fixed. The
automation welding
system method is characterized in that preprocessing is carried out to a groove of a steam outlet edge of the hollow stationary blade firstly, then balance arc process welding is carried out to the steam outlet edge and a steam inlet edge ofthe hollow stationary blade of the
steam turbine by adopting a welding
robot system with arms and gas shielded
arc welding equipment with a consumable
electrode, a
laser tracker with a scanning function is arranged in front of a welding gun of the arm of a welding
robot, and in welding, the
laser tracker is utilized to scan the groove corner lines of the hollow stationary blade with thin sheets, and the position of the welding gun can be automatically adjusted according to the change of the features of the groove so as to finish the welding operation finally.