Journals →  Chernye Metally →  2023 →  #9 →  Back

100th anniversary of the “Metal forming” dept. of Ural federal university
ArticleName Evaluation of the influence of technological parameters of screw piercing on the shell quality and process stability
DOI 10.17580/chm.2023.09.01
ArticleAuthor O. A. Panasenko, D. Sh. Nukhov, A. O. Khalezov
ArticleAuthorData

JSC Seversky Tube Works, Polevskoy, Russia:
O. A. Panasenko, Head of the Pipe-Rolling Laboratory of the Research Center, e-mail: PanasenkoOA@stw.ru

 

Ural Federal University named after the first President of Russia B. N. Yeltsin, Ekaterinburg, Russia:
D. Sh. Nukhov, Cand. Eng., Associate Prof., Dept. of Metal Forming, e-mail: d.s.nukhov@urfu.ru
A. O. Khalezov, Postgraduate Student, Dept. of Metal Forming, e-mail: alekssanja633@mail.ru

Abstract

Over the past decades, high-performance units have become widespread in the technology of production of hot-worked tubes, existing pipe mills are being actively modernized, the range of products has been significantly expanded, and the requirements for its quality have been increased. The tasks of theoretical research and practical implementation of new technical solutions in improving the technology of seamless tube rolling, in which a special place is occupied by the process of screw piercing of a continuously cast billet, become topical. The main difficulty of the theoretical study of the screw piercing process in cross-rolling mills lies in the exact determination of the geometric parameters of the deformation zone, which have a significant effect on the deformation-speed and energy-power parameters of the process. The use of analytical solutions developed on the basis of numerical models allows to more quickly obtain the desired solutions as a result of engineering calculations. Previously, under the guidance of professor A. A. Bogatov, a technique for studying the shape change of the billet was developed, which takes into account the complexity of metal movement in the longitudinal and transverse directions of the deformation zone. The application of this technique made it possible to obtain the distributions of the relative billet reduction (Δr/r0), ovalization coefficient (ξ), and the ratio of the billet radius to the width of the contact surface (r0/b) for each helix line pitch number. It has been established that with an increase in the feed angle β, the number of helix pitches before meeting with the plug decreases, and the value of partial reduction increases. It was revealed that screw piercing with a reduced rolls rotation frequency contributes to reduction of the uneven outflow of the peripheral and central layers of the billet, reduction of the process cyclicity in the final stage, which reduces the annular delamination of the metal and the probability of defects formation.

The study was carried out within the framework of the design part of the state task No. 075-03-2023-006 dated 01/16/2023.

keywords Screw rolling, computer simulation, ovalization coefficient, relative billet reduction, helix pitch, deformation degree, near-contact area, rolling axis
References

1. Teterin P. K. Theory of transverse and screw rolling. Moscow : Metallurgiya, 1983. 270 p.
2. Danilov F. A., Gleyberg A. Z., Balakin V. G. Hot rolling and pressing of pipes. Moscow : Metallurgiya, 1972. 576 p
3. Osadchiy V. Ya., Vavilin A. S., Zimovets V. G., Kolikov A. P. Technology and equipment of pipe production. Moscow : Intermet Inzhiniring, 2007. 560 p.
4. Kolikov A. P., Romantsev B. A. Theory of metal forming. Moscow : Izdatelskiy dom MISiS, 2015. 451 p.
5. Vydrin A. V. Development of the technologies of hot rolling of seamless tubes. Chernye Metally. 2012. № 9. P. 16–20.
6. Osadchiy V. Ya., Kolikov A. P. Production and quality of steel pipes: A manual for high schools. Moscow : Izdatelstvo MGUPI, 2012. 370 p.
7. Potapov I. N., Kolikov A. P. Theory of pipe production. Moscow : Metallurgiya, 1991. 424 p.
8. Shevakin Yu. F., Gleiberg A. Z. Production of tubes. Moscow : Metallurgiya. 1968. 440 p.
9. Kolmogorov V. L. Stress, deformation and fracture. Moscow : Metallurgiya, 1970. 229 p.
10. Golubchik R. M., Merkulov D. V. Estimation of pierced billet dimensions according to the parameters of cyclic shaping. Stal. 2012. No. 12. pp. 37–40.
11. Bogatov A. A. Mechanical properties and models of metal destruction. Ekaterinburg : UGTU–UPI, 2003. 239 p.
12. Toporov V. A., Chepurin M. V., Parfenov V. A., Stepanov A. I. Investigation of screw rolling during billet piercing. Stal. 2014. No. 6. pp. 63–66.
13. Bogatov A. A., Pavlov D. A., Nukhov D. Sh. Screw rolling of continuously cast billets from structural steel grades: textbook. Ekaterinburg: Izdatelstvo Uralskogo universiteta, 2017. 164 p.
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.
15. Orlov D. A., Goncharuk A. V., Kobelev O. A., Komarnitskaya O. G., Bunits N. S. Analysis of the features of the process of piercing pipes on PRP 70–270 using the finite element method. Izvestiya vuzov. Chernaya metallurgiya. 2020. Vol. 63. No. 10. pp. 848–855.
16. Romantsev B. A., Aleshchenko A. S., Guseynov E. R., Tsyutsyura V. Yu. Development of a method and equipment for testing materials for alternating bending during piercing in screw rolling mills. Chernye Metally. 2020. No. 11. pp. 29–34.
17. Gamin Y. V., Skripalenko M. M., Romantsev B. A. et al. Prediction of billet fracture at two-high screw rolling piercing. Metallurgist. 2021. Vol. 64, Iss. 36. pp. 1020–1028.
18. Topa A., Kim D. K., Kim Y. 3D numerical simulation of seamless pipe piercing process by fluidstructure interaction method. MATEC Web of Conferences. 2018. 06016.
19. Orlov D. A., Gamin Y. V., Goncharuk A. V., Romantsev B. A. Development and investigation of piercing process using cooled guide shoes. Metallurgist. 2021. Vol. 65, Iss. 3–4. pp. 389–399.
20. Galkin S. P., Gamin Yu. V., Aleshchenko A. S., Romantsev B. A. Modern development of elements of the theory, technology and mini-mills of radial shear rolling. Chernye Metally. 2021. No. 12. pp. 51–58.
21. Nguyen Q., Aleshchenko A. S. Research on the mandrel wear of a screw rolling piercing mill by the finite element method. Key Engineering Materials. 2022. Vol. 910. pp. 381–387.

Language of full-text russian
Full content Buy
Back