National University of Science and Technology “MISIS”, Moscow, Russia

V. N. Shinkin, Dr. Phys.-Math., Prof., Dept. of Physics, e-mail: shinkin-korolev@yandex.ru

Bending the sheet’s edges is a mandatory operation in the production of the single-seam welded steel pipes of large diameter. Usually, the operation of edges’ bending of a flat steel sheet foregoes the operation of pipe billet’s forming on the presses (for example, in the technology of the German company SMS Meer). However, when forming a pipe billet on the three-roller mills, the operation of edges’ bending of steel sheet is carried out after the roller operation of sheet (for example, in the technology of the Swiss company Haeusler). This is due to the fact that after forming the sheet on three-roller mills, the large non-deformable flat sections of the sheet (splines) remain at the edges of pipe billet, which do not allow for the high-quality gas assembly of the pipe billet’s edges. To solve this problem, the company Haeusler has developed the roller edge-bending mills, located after the three-roller mills by Haeusler. In this paper, the mathematical model for calculating the shape of the steel tubal billet’s edges, when the billet is formed on the roller edgebending mills by the company Haeusler with the two-radial surface profile of rollers, is constructed.

1. Shinkin V. N. Continuum mechanics for metaqllurgists. Moscow : MISiS, 2014. 628 p.
2. Shinkin V. N. Moment at elastic-plastic bending of steel sheet. Part 2. Cubic approximation of steel’s hardening zone. Chernye Metally. 2022. No. 2. pp. 15–18.
3. Versaillot P. D., Zhao Z. L., Wu Y. F. A new theoretical method for predicting the elastoplastic behavior of ductile metallic materials. International Journal of Mechanical Sciences. 2021. Vol. 200. 106450.
4. Tu S., Ren X., He J., Zhang Z. Stress-strain curves of metallic materials and post-necking strain hardening characterization: A review. Fatigue and Fracture of Engineering Materials and Structures. 2020. Vol. 43. No. 1. pp. 3–19.
5. Adigamov R. R., Baraboshkin K. A., Mishnev P. A., Karlina A. I. Development of rolling procedures for pipes of K55 strength class at the laboratorial mill. CIS Iron and Steel Review. 2022. Vol. 24. pp. 60–66.
6. Barykov A. M., Stepanov P. P., Il’inskii V. I., Golovin S. V. et al. Development of rolled product manufacturing technology for pipes with high deformation capacity. Metallurgist. 2020. Vol. 63. No. 11-12. pp. 1204–1219.
7. Shirizly A., Dolev O. From wire to seamless flow-formed tube: Leveraging the combination of wire arc additive manufacturing and metal forming. JOM. 2019. Vol. 71. No. 2. pp. 709–717.
8. Bauer A., Manurung Y. H. P., Sprungk J., Graf M. et al. Investigation on forming-welding process chain for DC04 tube manufacturing using experiment and FEM simulation. The International Journal Advanced Manufuring Technology. 2019. Vol. 102. pp. 2399–2408.
9. Komissarov A. A., Sokolov P. Y., Tikhonov S. M., Sidorova E. P. et al. Production of low-carbon steel sheet for oil-industry pipe. Steel in Translation. 2018. Vol. 48. No. 11. pp. 748–753.
10. Naumenko V. V., Bagmet O. A., Muntin A. V., Soldatov E. A. et al. Study of the effect of microalloying on microstructure and mechanical property formation for rolled product of strength class K52 produced under cru conditions. Metallurgist. 2020. Vol. 64. No. 7-8. pp. 759–769.
11. Belskiy S. M., Pimenov V. A., Shkarin A. N. Analysis of geometrical parameters of hot-rolled rolling. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 971, No. 2. 022074.
12. Belskiy S. M., Pimenov V. A., Shkarin A. N. Profiles’ classifier of hot-rolled. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 971, No. 2. 022075.
13. Zhigulev G. P., Skripalenko M. M., Fadeev V. A., Skripalenko M. N., Danilin V. N. Modelling of the sheet forming while 3-roller bending process. CIS Iron and Steel Review. 2022. Vol. 23. pp. 45–49.
14. Goncharuk A. V., Fadeev V. A., Kadach M. V. Seamless pipes manufacturing process improvement using mandreling. Solid State Phenomena. 2021. Vol. 316. pp. 402–407.