Abstract:Aiming at the problems that the aviation sheet metal casing material is difficult to form and the precision of the formed product is difficult to control, this paper takes the superalloy GH3030 as the material. On the basis of clarifying the springback theory and load mechanism of the cold strong spinning forming of the sheet metal casing, the SIMUFACT.FORMING finite element software is used to import the constitutive equation of GH3030 obtained before the laboratory, and the simulation model of the cold strong spinning of the conical part of the aviation casing is established in the software. The influence of the roller gap, the roller feed ratio and the half cone angle of the mandrel on the springback and load of the cold strong spinning forming of the sheet metal casing is analyzed. The primary and secondary rules of the influence of each process parameter on the springback angle were obtained by orthogonal test, and the optimal process parameter combination was obtained. The BBD test method was used to obtain the quantitative regression model of spinning maximum forming force and spinning parameters. The regression equation was analyzed by variance analysis, and its multivariate correlation coefficient, reliability and accuracy were calculated. The results show that the model has high reliability and accuracy. And take the point verification, found that the error is within 10 %, so the regression model is more accurate. Finally, the spinning experiment was carried out, and the springback angles of the simulation results and the measured results of the spinning experiment were compared and analyzed. The average error was about 6.2 %, which verified the reliability of the simulation results. The research results of this paper provide theoretical guidance and technical support for the accurate forming of cold strong rotation of superalloy sheet metal casing conical parts.