South Ural State University (Chelyabinsk, Russia):

V. G. Ilyichev, Cand. Eng., Associate Prof., Dept. “Processes and machines”, e-mail: ilichevvg@susu.ru

The technologies for production of large diameter pipes (LDP) for hydrocarbons transportation have been studied from the standpoint of achieving competitive advantages in the corresponding segment of the profile assortment. The analysis of the reasons for decreasing in operational reliability due to the features of individual shaping operations and the practice of their implementation was carried out. Technical solutions were proposed to minimize the negative impact of a sheet-pipe technological process stage on product quality characteristics.

1. Ushakov А. S., Kondratov L. А. About steel pipe production. Stal. 2017. No. 7. pp. 36–40.
2. Nesterov G. V., Studenov Е. P., Gavrilov D. А. Assessment of the effect of pipe technologica process state on metal properties of strength class K56 large diameter pipes. Nauka i tekhnologiya truboprovodnogo transporta nefti i nefteproduktov. 2017. Vol. 7. No. 3. pp. 48–57.
3. STO Gazprom No. 2-5.1-148–2007. Stress corrosion cracking test methods for steels and welded joints. Introduced: 28.12.2007.

4. API SPEC 5L. Line pipe. Specifications. Published: 01.07.2000.
5. Sazonov М. P., Trapeznikov I. S. Creation and experience of a testing ground for pneumatic testing of pipes with 11.8 MPa working pressure. Proceedings of the International scientific and practical conference «Tubes 2008» (Chelyabinsk, 16–17 September 2008). Chelyabinsk: RosNITI, 2008. pp 299–305.
6. Ilyichev V. G. To the issue of informativeness of routine tests to assess the gas pipes reliability. Proceedings of the International scientific and technical conference «Tubes 2011». Chelyabinsk: RosNITI, 2012. pp. 271–276.
7. Chukin М. V., Golubchik М. V., Korchunov А.G. et. al. Adaptive approaches to the design of technological processes and quality management of metal products. Saint Petersburg: Piter, 2016. 464 p.
8. Stasovsky Yu. N., Sokurenko V. P., Stepanenko А. N., Ugryumov Yu. D. The current state and prospects of production and consumption of pipe products in the world (Part 1). Chernaya metallurgiya. Byulleten nauchno-tekhnichesloy i ekonomichesloy informatsii. 2014. No. 5. pp. 12–23.
9. Chikalov S. G., Kirichenko V. V., Fedichkin V. F., Frolochkin V. V., Kuznetsov V. Yu. Mastering the production technology of electricwelded spiral seam oil pipes. Stal. 2000. No. 2. pp. 43–45.
10. Matrosov Yu. I., Litvinenko D. А., Golovanenko S. А. Steel for gas pipelines. Moscow: Metallurgiya, 1989. 288 p.
11. Boklag N. Yu. Optimization of the process and equipment to improve the quality of forming large diameter pipes in a preform press. Dissertation ... of Candidate of Engineering Sciences. Yekaterinburg, 2015.
12. Lyaskovsky А. А. Pipe production technology in the conditions of JSC ZTZ. Proceedings of the XXII International scientific and practical conference «Innovations and import substitution in the tube industry» («Tubes 2016») (Chelyabinsk, 20–22 September 2017). Chelyabinsk: RosNITI. pp. 97–101.
13. Birger I. А. Residual stresses. Moscow: Mashgiz, 1963. 232 p.
14. Shinkin V. N. Calculation of technological parameters of O-forming press for manufacture of large-diameter steel pipes. CIS Iron and Steel Review. 2017. Vol. 13. pp. 33–37.
15. Ilyichev V. G., Zalavin Ya. Е. Experimental study of friction forces in the deformation zone during roll forming. Vestnik Yuzhno-Uralskogo gosudarstvennogo universiteta. Seriya: Metallurgiya. 2015. Vol. 15. No. 3. pp. 4–11.
16. Johnson W., Mellor P. Engineering plasticity. Moscow: Mashinostroenie. 1979. 437 p.
17. Emelyanenko P. Т., Zhukovsky B. D. Calibration of rolls for continuous pipe forming mills. Stal. 1947. No. 7. pp. 616–626.
18. Kolikov А. P., Zvonarev D. Yu., Taupek I. М. Usage of mathematical simulation for calculation of conditions plastic deformations for heavy plate billets and quality improvement in large-diameter tubes. Chernye Metally. 2018. No. 11. pp. 60–66.
19. Kolikov А. P., Zvonarev D. Yu. Modeling the change in ovality of large-diameter welded pipes during expansion. Proceedings of the XXII International scientific and practical conference «Innovations and import substitution in the tube industry» («Tubes 2016») (Chelyabinsk, 20–22 September 2017). Chelyabinsk: RosNITI, 2017. pp. 251–254.
20. Ilyichev V. G., Zalavin Ya. Е. Experimental study of frictional forces at the boundary of a tool and workpiece under conditions of expansion of large diameter pipes. Vestnik Yuzhno-Uralskogo gosudarstvennogo universiteta. Seriya: Metallurgiya. 2017. Vol. 17. No. 1. pp. 81–88.