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September 10, 2025

Creation of internal protrusion in pipe billet by radial extrusion. Determination of kinematic and stress states. Part 2

Key Points

The study finds formulas to calculate the stresses and force parameters in internal radial extrusion.
Maximum pressure on the die wall was determined, showing critical pressure limits in processing.
Using plastic flow theory, the expansion force on the mandrel was calculated, revealing efficiency in design.
Implications suggest improved design parameters for pipe production processes in industrial applications.

Abstract

Using the theory of plastic flow according to the method of A. L. Vorontsov, the formulas necessary for calculating the stresses and force parameters of the process of internal radial extrusion of a pipe billet have been obtained. The expansion force acting on the upper mandrel and the maximum pressure acting on the die wall were determined.

Creation of internal protrusion in pipe billet by radial extrusion. Determination of kinematic and stress states. Part 2

Key Points

Abstract

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