Large-size high-precision invar waveguide deformation control process

The invention provides a large-size high-precision invar waveguide deformation control process, which aims at an invar (4J36) waveguide, after stress relief annealing and heat treatment, silver plating treatment is performed on the inner surface of the waveguide, and processing is completed after silver plating, and solves the problem of processing deformation control of the invar (4J36) waveguide so as to ensure the requirements of high precision and high stability of the invar (4J36) waveguide. The method effectively reduces and eliminates the residual stress generated during processing, controls the deformation of the waveguide in the processing process, guarantees the stability of the waveguide, and enables the waveguide to better meet the design precision requirement. The production bottleneck of navigation equipment is broken through, and autonomous and controllable production of important invar waveguide parts is realized; on the premise that the design precision of the invar waveguide is guaranteed, t