Prediction of the Variation of the Form in the Processes of Extrusion

The theoretical analysis of dimple formation in direct, radial and combined extrusion processes was made. By the theoretical methods of analysis of radial, direct and radial-back extrusion processes, the problems on the determination of geometric parameters of extruded parts without dimples have been solved. Was found the parameters which has influence on defect formation in radial, direct and radial-back extrusion processes. Graphic dependence for determination of geometric parameters of parts extruded without dimple have been constructed.