Contrast and research of process research of long span metal molding parts

The long span metal molding parts method are studied in this paper. Large curvature and long span parts are key components of aircraft wings, commonly used in the forming process of wing panel skins and longitudinal trusses. As the process of the metal molding parts, based on the analysis of test and manufacture, the design requirements and mechanism are summarized as follow. The mechanism compared the results of various forms of molding parts, the design reliable thereunder was proved for the airfoil detailed design. Various mature forming methods in engineering were compared in this article, and the advantages and disadvantages of each method were presented. Based on the actual engineering test results, the application scope of various methods was given, and the actual effects of the corresponding mechanisms were summarized. In practical application, the method of smoothing the curvature of the maximum range of compressive stress is to use large projectiles for forming has been applied to domestic aircraft.