National University of Science and Technology “MISiS” (Moscow, Russia)

V. N. Shinkin, Dr. Phys.-Math., Professor, e-mail: shinkin-korolev@yandex.ru

The shaping of the large-diameter pipes on the pre-shaping press of the tube-electric welding unit with help of the punch with a flat-bottom is an important applied technical problem in the ferrous metallurgy. The proper selection of the shape’s characteristics of the punch and the shaping’s characteristics for the given characteristics of the steel sheet is the complicated technical problem for the technologists of the pipe shops. On the one hand, the insufficient reduction of the steel billet on the pre-shaping press leads to too large a gap between the longitudinal edges of the steel sheet. In this case, the welding of the sheet edges is impossible. The pipe billet has to be additional bent on the special press before the welding of the sheet’s edges, since there is not enough power of the devices for pressing the edges to each other on the electric welding unit before the pipe’s assembling. On the other hand, the excessive reduction of the steel billet on the pre-shaping press leads to the defect of the edges’ overcloak after shaping the billet on the final-shaping press. All this leads to significant downtimes in the continuous manufacture process of the steel pipes.

1. Shinkin V. N. Analytical description of metal plasticity at shift. CIS Iron and Steel Review. 2020. Vol. 19. pp. 66-70.
2. Shinkin V. N. Non-linear description of hardening zone of steel. Journal of Physics: Conference Series. 2020. Vol. 1431. 012069.
3. Grote K.-H., Hefazi H. Springer handbook of mechanical engineering. Springer. 2021. 1450 p.
4. Molotnikov V., Molotnikova A. Theory of elasticity and plasticity: A textbook of solid body mechanics. Springer. 2021. 485 p.
5. Belskiy S. M., Pimenov V. A., Shkarin A. N. Mathematical model for evaluating the actual form of the profile’s contour of the hot-rolled strip’s cross section. Journal of Chemical Technology and Metallurgy. 2021. Vol. 56. No. 1. pp. 214220.
6. Belskiy S. M., Shopin I. I. On issue of strip’s break during cold rolling. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 969. 012072.
7. Tarantino A. M., Lanzoni L., Falope F. O. The bending theory of fully nonlinear beams. Springer. 2019. 87 p.
8. Ushakov I. V. Method of mechanical testing of laser treated metallic glass by indenters with different geometry. Proceedings of SPIE The International Society for Optical Engineering. 2007. Vol. 6597. 659714.
9. Gasik M. Handbook of ferroalloys: Theory and technology. Butterworth-Heinemann. 2013. 536 p.
10. Jazar R. N. Approximation methods in science and engineering. Springer. 2020. 537 p.
11. Shinkin V. N. Torque at elastic-plastic torsion of sheet-straightening machines’ steel shafts. Chernye Metally. 2020. No. 11. pp. 35-39.
12. Shinkin V. N. To question about moment at elasticoplastic bending. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 971. 042055.
13. Cazacu O., Revil-Baudard B. Plasticity of metallic materials: Modeling and applications to forming. Elsevier. 2020. 560 p.
14. Li H., Fu M. Deformation-based processing of materials: Behavior, performance, modeling and control. Elsevier. 2019. 350 p.
15. Belskiy S. M., Shopin I. I. Statistical regression analysis of breakages in cold rolling. IOP Conference Series: Materials Science and Engineering. 2020. Vol. 969. 012074.
16. Ritchie R., Liu D. Introduction to fracture mechanics. Elsevier. 2021. 152 p.
17. Gonzalez-Velazquez J. L. Mechanical behavior and fracture of engineering materials. Springer. 2020. 244 p.
18. Ushakov I. V., Feodorov V. A., Permyakova I. J. Mechanical characteristics and crystallization of annealed metallic glass 82K3XCP. Proceedings of SPIE The International Society for Optical Engineering. 2004. Vol. 5400. pp. 261-264.
19. Yu M.-H. Unified strength theory and its applications. Springer. 2018. 463 p.
20. Faraji G., Kim H. S., Kashi H. T. Severe plastic deformation: Methods, processing and properties. Elsevier. 2018. 324 p.
21. Silberschmidt V. V. Mechanics of materials in modern manufacturing methods and processing techniques. Elsevier. 2020. 465 p.