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ArticleName Study of the effect of drawing conditions in the twin dies on tube breakage rate
ArticleAuthor A. V. Vydrin, K. Yu. Yakovleva, A. S. Kochkin, B. V. Barichko

All-Russian Scientific and Research Institute of Tube Industry — RosNITI (Chelyabinsk, Russia):

A. V. Vydrin, Dr. Eng., Prof., Deputy General Director on Scientific Work, e-mail:
K. Yu. Yakovleva, Cand. Eng., Scientific Researcher, Laboratory of Extrusion and Drawing, e-mail:
A. S. Kochkin, Junior Scientific Researcher, Laboratory of Simulation of the Technological Processes, e-mail:
B. V. Barichko, Cand. Eng., Leading Scientific Researcher, Laboratory of Extrusion and Drawing, e-mail:


The method of drawing in two monolithic dies installed in one production line for manufacture of cold-deformed tubes is a relatively new one and, therefore, is a little-studied process. Application of this drawing method makes it possible to considerably increase the diameter reduction of the tube and to deform the tubes with a larger total stretching in a single pass compared to conventional tube drawing, which reduces the number of operations. In this case, the process of drawing is important to conduct under conditions that ensure a stable course of deformation without breakage. The breakaway of pipes when drawing in twin dies is influenced by various factors, such as the distance between the dies, distribution of deformation along the deformation area, the friction coefficient at the contact between the tube and working tool, and others. The object of research and analysis is the technological process of manufacturing cold-deformed tubes from various steel grades. The work is devoted to the analysis of the influence of the distribution of strain on the dies on the stressed state, the drawing force, the safety factor, the conditions of the anti-tension. All these factors must be taken into account in the development of rational routes for drawing of tubes in twin dies. Technological features of manufacturing of tubes by drawing in twin dies are considered in the article, the basic advantages of the given method are considered. The optimal parameters of the stable course of the drawing process are determined and scientifically substantiated on the basis of computer modeling with the use of specialized software products.

keywords Seamless tubes, sink drawing, fixed plug drawing, computer modeling, plastic deformation, twin dies, breakage rate, safety factor

1. Bisk M. B., Grekhov I. A., Slavin V. B. Cold deformation of steel tubes. Part. 1. Preparation to deformation and drawing. Sverdlovsk: Sredne-Uralskoe knizhnoe izdatelstvo, 1976. 232 p.
2. Orlov G. A. Improvement of tube drawing and cold rolling processes. Metallurg. 2014. No. 11. pp. 76–79.
3. Guryanov G. N. Estimation of back tension efficiency during round billet drawing. Stal. 2013. No. 11. pp. 63–70.
4. Kravchenko N. S., Revinskaya O. G. Methods for measurement analysis and inaccuracy estimation in educational laboratory session: tutorial. Tomsk: Izdatelstvo Tomskogo politekhnicheskogo universiteta, 2011. 88 p.
5. Solonin S. I. Histogram method. Yekaterinburg: TsNOT ITOO UrFU, 2014. 98 p.
6. Yakovleva K. Yu. Intensifi cation of cold-deformed tube floating plug drawing process on the base of complex simulation: Dissertation … of Candidate of Engineering Sciences: 05.16.05; FGAOU VO YuUrGU (NIU). Chelyabinsk, 2017. 192 p.
7. Perlin I. L., Ermanok M. Z. Theory of drawing. Moscow: Metallurgiya, 1971. 448 p.
8. Kolikov A. P., Romatsev B. A. Theory for metal forming: manual. Moscow: Izdatelsky Dom MISiS, 2015. 452 p.
9. Guryanov G. N., Zuev B. M. Dependence of wire allowable deformation ratio on friction, safety factor and strain hardening. Stal. 2013. No. 4. pp. 49–54.
10. Guryanov G. N., Zhelezkov O. S., Platov S. I., Terentev D. V. Wire safety factor and forming efficiency in dependence on drawing angle. Izvestiya vuzov. Chernaya metallurgiya. 2015. No. 1. pp. 24–30.
11. Grudnev A. P. Exturnal friction during rolling. Moscow: Metallurgiya, 1973. 288 p.
12. Kolmogorov G. L., Chernova T. V., Averyanova E. M., Snigireva M. V. Optimal geometry for technological drawing tool. Izvestiya vuzov. Chernaya metallurgiya. 2013. No. 7. pp. 51–53.
13. Kolmogorov V. L., Guryanov G. N., Smirnov S. V. Selection of wire drawing deformation parameters on the base of allowable values of I. L. Perlin safety factor and stress state index. Problemy chernoy metallurgii i materialovedeniya. 2017. No. 4. pp. 5–12.
14. Zhelezkov O. S., Malakanov S. A., Platov S. I. Stress-strained state and forming in drawing of hexagonal sections from a round billet. Chernye metally. 2016. No. 12. pp. 31–35.
15. Tropotov A. V., Orlov G. A., Shveikin V. P. Investigation of reasons of cold-deformed tubes delayed damage after sinking. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoy i ekonomicheskoy informatsii 1993. No. 12. pp. 21–22.
16. Voronin I. A. Development and analysis of tubes drawing process through two tandem draw rings: Dissertation of Magister. Uralsky federalny universitet, Institut materialovedeniya i metallurgii, Kafedra obrabotki metallov davleniem. Yekaterinburg, 2015. 79 p.

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