Journals →  Chernye Metally →  2021 →  #2 →  Back

Rolling and Other Metal Forming Processes
ArticleName Control of properties and structure of steel vessels by cooling in various media at the outlet of rolling and pressing lines
DOI 10.17580/chm.2021.02.06
ArticleAuthor R. L. Shatalov, V. A. Medvedev

Moscow Polytechnic University (Moscow, Russia):

R. L. Shatalov, Dr. Eng., Prof., Materials Forming and Additive Technologies Dept., E-mail:
V. A. Medvedev, Graduate Student, Materials Forming and Additive Technologies Dept., E-mail:


When controlling the mechanical properties and structure of vessels made of carbon structural steels manufactured by hot deformation on rolling and pressing lines (PPL) of machine-building enterprises of Russia, such cooling media as water, I20 industrial mineral oil, air are used. The applied cooling media are able to provide the workpieces with a given structure with a wide range of mechanical properties. However, the cooling media have a number of technological limitations and conditions of the use, non-compliance with which leads to reject. When cooled in oil, the probability of ignition is high; when cooled in water, hardening cracks may form, and air is not always able to provide the required rate and uniformity of heat transfer to the environment. The efficiency of control of physical and mechanical properties and structure of deformed vessels made of 50 steel by cooling in TERMAT polymer aqueous solutions in different concentrations on PPL of the plant of JSC NPO Pribor was studied. The effect of varying the concentration from 2 to 9% of TERMAT polymer on the formation of metal structure, as well as physical and mechanical properties of hot-deformed vessels was studied. The results of testing the strength and plastic characteristics of vessels by destructive and non-destructive control methods are presented. According to the results of physical and mechanical properties, regression equations were obtained with at least 95% reliability of R2, which establish the relationship between the controlled plastic and strength parameters of the vessel metal`s properties. The conducted researches allowed to compare the indicators of the main physical and mechanical properties of steel vessels at the PPL outlet and to propose methods of inhomogeneity control that reduce time and material costs by 5–10% during the tests.

keywords Rolling and pressing line, vessel, steel 50, cooling conditions, TERMAT polymer, polymer concentration in aqueous solution, control of physical and mechanical properties, microstructure, regression equations

1. Vydrin A. V. Development of the technologies of hot rolling of seamless tubes. Chernye Metally. 2012. No. 9. pp. 16–20.
2. Köhnen P., Haase Ch., Bültmann J., Ziegler S., Schleifenbaum J. et al. Mechanical properties and deformation behavior of additively manufactured lattice structures of stainless steel. Mater. Des. 2018. Vol. 145. pp. 205–217.
3. Shatalov R. L., Medvedev V. А. Infl uence of temperature non-uniformity of a deformable workpiece on mechanical properties of thinwalled steel vessels when processing on a rolling and pressing line. Metallurg. 2019. No. 2. pp. 53–58.
4. Fomin A. V., Aleshchenko A. S., Maslenniko I. M., Galkin S. P., Nikulin A. N. Structural and analytical evaluation of the strain intensity and its components during cross-roll piercing at different feed angles. Metallurgist. 2019. Vol. 63. No. 5-6. pp. 477–486.
5. Tereshchenko A. А., Fartushnyi N. I., Goncharuk А. V., Davydova Е. А., Romantsev B. А. Improvement of the method of calculating the deformation center geometric parameters when rolling seamless pipes in continuous mills. Proizvodstvo prokata. 2007. No. 9. pp. 20–23.
6. Guo F., Wang X., Wang J., Misra R. D. K., Shang C. The significance of central segregation of continuously cast billet on banded microstructure and mechanical properties of section steel. Metals. 2020. Vol. 10, Iss. 1. p. 288.
7. Wang X.-J., Sun X.-J., Song C. et al. Grain Size-Dependent Mechanical Properties of a High-Manganese Austenitic Steel. Acta Metallurgica Sinica (English Letters). 2019. Vol. 32. No. 6. pp. 746–754.
8. Masoumi M., Mohtadi-Bonab M. A., de Abreu H. F. G. Effect of Microstructure and Texture on Anisotropy and Mechanical Properties of SAE 970X Steel Under Hot Rolling. J. Mater. Eng. Perform. 2016. Vol. 25. pp. 2847–2854.
9. Samusev S. V., Aleshchenko А. S., Fadeev А. А. Modeling of the process of continuous forming of welded straight-seam pipes on the basis of TESA 10-50 simulator. Izvestiya vuzov. Chernaya metallurgiya. 2018. Vol. 61. No. 5. pp. 378–384.
10. Goryushin V. V., Shevchenko S. Yu. On the use of polymer hardened media in industry. Metallovedenie i termicheskaya obrabotka metallov. 2010. No. 6. pp. 26–30.
11. Bayati Н., Rimmer A. L., Elliott R. The austempering kinetics and processing window in an austempered, low-manganese compacted graphite cast iron. Cast Metals. 1994. Vol. 7, Iss. 1. pp. 11–24.
12. Shatalov R. L., Shelest A. E., Medvedev V. A. Electromagnetic Device for Nondestructive Control of the Mechanical Properties of Thin-Walled Steel Vessels. Russian Metallurgy. 2020. Iss. 3. pp. 259–264.
13. Technical specifi cation 2219-003-30014146–2011. Concentrated aqueous solution of TERMAT hardening medium.
14. Astashchenko V. I. Features of cooling capability of polymers aqueous solutions. Sotsialno-ekonomicheskie i tekhnicheskie sistemy. 2007. No. 1. pp. 73–78.
15. GOST 9012–59. Metals. Method of Brinell hardness measurement. Introduced: 01.01.1960.
16. GOST 1487–84. Metals. Methods of tensile test. Introduced: 01.01.1986.
17. GOST 9454–78. Metals. Methods for testing impact strength at low, room and high temperature. Introduced: 01.01.1979.
18. GOST 5640–68. Steel. Metallographic method for determination of microstructure of sheets and bands. Introduced; 01.01.1970.
19. Jia N. N., Guo K., He Y. M., Wang Y. H., Peng J. G. et al. A Thermomechanical Process to Achieve Mechanical Properties Comparable to Those of Quenched-Tempered Medium-C Steel. Mater. Sci. Eng. A. 2017. Vol. 700. pp. 175–182.
20. Kobzar А. I. Applied mathematical statistics. For engineers and scientists. Moscow: Fizmatlit, 2012. 816 p.

Language of full-text russian
Full content Buy