Grudkina N. The shape deformation of axisymmetric parts such as the "glass with flange" using the combined radial-backward extrusion.

The object of the research is the process of extrusion of hollow parts with flanges. The aim is the technical and economical efficiency in cold forging processes of the parts on the basis of rational technological regime of the shape deformation of the hollow parts with flanges. Research Methods are energy method, finite element method (FEM), method of grids, mathematical statistics. Theoretical and practical results are the mathematical models for calculating the power parameters, and the defects appearance in the form of dimple, recommendations for the improvement of technology and development of the tools. Novelty is the influence of the main factors on the power parameters of forming parts such as the power parameters, and the defects appearance in the form of dimple using the combined radial-backward extrusion of hollow parts with flanges. Efficiency of implementation is the developed and transferred to industrial development of technology and the tools for the combined radial-backward extrusion of hollow parts with flanges. Area of application is metal forming, unit engineering and metallurgical enterprises, industrial research institutes.