Computer-Simulation of the Billet Shape Change during Helical Piercing

Abstract:

In this paper the task of the study of the deformation during helical piercing of the metal was set and solved with the use of the DEFORM-3D software. Methodology, that allows to calculate the length of helix lead along the deformation zone, as well as determine for each lead absolute and relative reduction, the width of the contact area and the metal strain refinement indicator was developed. Based on the developed methodology application the following variation regularities were established: helix lead length (l_i), quotient reduction (Δr/r₀), ratio of the billet radius to the width of the contact area (r₀/b), as well as the length of the billet contact surface (l₀) with the roll in dependence of the feed angle (β), the roll number of revolutions (N) and the plug nose advancement over the gorge (C_g).

• Periodical: Solid State Phenomena (Volume 299)
• Pages: 386-391
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.299.386
• Online since: January 2020
• Authors: Vladimir Toporov, Aleksandr Bogatov, Danis Sh. Nukhov*
• Keywords: Billet Reduction Rate, Computer Simulation, Contact Area, Deformation Zone Geometry, Feed Angle, Helical Rolling, Helix Lead, Plug Nose Advancement over the Gorge, Rotation Speed

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