1results about How to "Guaranteed shape and position accuracy" patented technology

A rectifier blade welding repair method, comprising the following steps: step S1: based on the finite element method, a thermal coupling numerical model of the rectifier welding process is established, and a heat source model of argon arc welding and laser welding is established; step S2: setting the argon arc welding numerical simulation parameters and the laser welding numerical simulation parameters, respectively adopting the argon arc welding and the laser welding mode to carry out numerical simulation welding on the rectifier; step S3: comparing the temperature field at the moment of welding completion, the residual stress field after welding and the residual axial deformation after welding by using the two welding modes; step S4: according to the comparison result in step S3, the suitable welding mode is determined; step S5: through the actual welding test, the feasibility of the suitable welding mode determined in step S4 is verified; step S6: if the feasibility verification in step S5 is passed, the rectifier is clamped by using the welding tooling, and the blade to be welded is welded on the outer ring by using the welding mode determined in step S4.