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ArticleName Taking into account the curvature of non-contact zone of steel pipe billet at its bending on the pre-forming press with non-asymmetrical rocking arm of TESA 1020 line
DOI 10.17580/chm.2021.09.07
ArticleAuthor V. N. Shinkin

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

V. N. Shinkin, Dr. Phys.-Math., Prof., Dept. of Physics, e-mail:


In the production of the large-diameter steel pipes according to JUOE technology on TESA 1020 line, the steel sheet is bent sequentially on the flanging press (J-press), the pre-forming press (U-press) and the final forming press (O-press). On the flanging press, the longitudinal edge of the steel sheet is bent along the entire length of the sheet. On the pre-forming press, the steel sheet is given a U-shape by bending its central part. The final forming press gives the cross-section of the steel pipe’s billet the shape of a circumference (O-shape). There are two main constructions of the pre-forming press for various types of the large-diameter pipe’s production: the press with a vertical cylindrical punch and the movable horizontal reduction beams with the cylindrical rollers and the press with a vertical cylindrical punch and a movable swinging rocking arm with the cylindrical reduction rollers. In given paper, we consider the forming of a steel pipe billet on the pre-forming press with an non-symmetrical swinging rocking arm having the cylindrical reduction rollers of different diameters. The hardening zone of steel is described by the nonlinear dependence that takes into account the Young’s modulus, the hardening modulus, the yield strength and the ultimate strength of steel. The calculations take into account the non-linearity of the transversal neutral line of steel sheet (pipe billet) in the non-contact zone between the punch and the reduction rollers of the swinging rocking arm. When forming a pipe billet on the final forming press, the effects of Bauschinger, Masing and Hencky for the pipe billet’s zones with sign-alternating bending during forming process on TEWA 1020 presses are taken into account.

keywords Elastoplastic bending, pipe’s billet, pre-forming press with swinging rocking arm, TESA line

1. Romanovskiy V. P. Cold stamping guide. Saint-Petersburg: Mashinostroenie, 1971. 782 p.
2. Nikolaev G. А., Kurkin S. А., Vinokurov V. А. Welded structures. Manufacturing technology. Automation of production and design of welded structures. Moscow: Vysshaya shkola, 1983. 344 p.
3. Chechulin Yu. B., Boklag N. Yu., Pesin Yu. V., Zolotov A. M. Press shaping of arched components by means of a mobile tool. Steel in Translation. 2013. Vol. 43. No. 4. pp. 212–214.
4. Seetharaman S. Fundamentals of metallurgy. Cambridge: Woodhead Publishing, 2005. 576 p.
5. Fonstein N. Advanced high strength sheet steels: physical metallurgy, design, processing and properties. Chicago: Springer, 2015. 418 p.
6. Shinkin V. N. Analytical calculation of steel billet`s shape at production of large diameter pipes on presses of TESA 1020. Chernye Metally. 2020. No. 3. pp. 31–35.
7. Kolikov A. p., Taupek I. M. Simulation of continuous roll forming process for producing welded pipes of small and medium diameters. Metallurgist. 2018. Vol. 61. No. 9-10. pp. 839–843.
8. Belskiy S. M., Shkarin A. N., Pimenov V. A. 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. 2020. Vol. 56. No. 1. pp. 214–220.
9. Shinkin V. N. Direct and inverse non-linear approximation of hardening zone of steel. Chernye Metally. 2019. No. 3. pp. 32–37.
10. Shinkin V. N. Influence of non-linearity of hardening curve on elasticoplastic bend of rectangular rod. CIS Iron and Steel Review. 2019. Vol. 17. pp. 39–42.
11. Stouffer D. M., Dame L. T. Inelastic deformation of metals: Models, mechanical properties and metallurgy. New York: John Wiley and Sons Wiley, 1996. 520 p.
12. Kutz M. Applied plastics engineering handbook: Processing, materials and applications. New York: Elsevier Science, 2016. 784 p.

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