South Ural State University (Chelyabinsk, Russia):

V. P. Vostrikov, Senior Researcher, Dept. of Machines and Technology of Metal Forming
L. A. Barkov, Dr. Eng., Scientific Director of the Resource Center for Special Metallurgy, e-mail: barkovla@susu.ru
M. N. Samodurova, Dr. Eng., Prof., Dept. of Machines and Technology of Metal Forming, e-mail: samodurovamn@susu.ru
Yu. S. Latfulina, Research Engineer, the Resource Center for Special Metallurgy, e-mail: latfulinays@susu.ru

The traditional method of production of laminated bars by rolling in calibers with double-sided compressions is considered. Drawbacks of the method are noted, leading to low quality of the received bars and low yield of suitable ones. The modern method is described as well as rol ling mills with triple-roller calibers, crimping the rolled products from three sides. The advantages of the method of rolling with three-way crimping are specified. A new layered material, a new method and new designs of mills for production of layered bars on the mills with three-way crimping are presented. The authors of the article received patents of the Russian Federation and foreign countries for inventions for material, method and design of mills. The process is described and designs of mills for rolling of laminated bars with four-sided compressions are presented. The research and development of the rolling method is carried out both for single- and multi-cell mills, in which the four-rollers had only two or all four drive rolls. The mills were designed with patents from the USA, Japan and European countries.

1. Kobelev А. G., Sharonov М. А., Kobelev О. А., Sharonova V. P. Materials Science. Technology of composite materials. Moscow: KnoRus. 2016. 268 p.
2. Grachev V. A., Rozen A. Y., Perelygin Y. P., Rozen A. A. Multilayer metal material with special properties and the production technology. Research Journal of Pharmaceutical, Biological and Chemical Sciences. 2016. Vol. 7, Iss. 5. pp. 403–411.
3. Kobelev А. G., Lysak V. I., Chernyshev V. N., Bykov А. А., Vostrikov V. P. Production of metal layered materials. Moscow: Intermet Inzhiniring. 2002. 495 p.
4. Gurevich L. М., Shmorgun V. G., Slautin О. V., Bogdanov А. I. Layered intermetallic composites and coatings. Moscow: Metallurgizdat. 2016. 346 p.
5. Vostrikov V. P., Plotnikov I. V., Plotnikova Yu. V., Lapshov M. A., Brylkin A. V. Composite steel stainless material with layer structure and method of its production. Patent RF No. 2155134. Applied: 19.10.99. Published: 27.08.2000.
6. Samodurova M. N., Barkov L. A., Latfulina Yu. S. Deformation in and efficiency of rolling in two- and multi-roll passes. Metallurgist. 2016. Vol. 60, Iss. 7-8. pp. 706–712.
7. Barkov L. А., Samodurova М. N., Latfulina Yu. S. Universal mills with multi-roll gauges of SUSU design. Mashinostroenie: setevoy elektronny zhurnal. 2017. Vol. 5. No. 1. pp. 11–17.
8. Stab- & Drahtwalzwerke — Kocks [Electronic resource] Available at: https://www.kocks.de/de/bar-and-wire-rod-mills/ (accessed: 01.04.2019).
9. Sapozhnikov S. Е., Katsnelson D. Ya. Blocks of finish modern wire mills abroad. Moscow: NIIinformtyazhmash. 1973. 48 p.
10. Sigalov Yu. М., Bakhtinov Yu. B., Komarov V. М., Kozlov А. N. Prospects for improving the quality of titanium rods when using a 10-stand block on the 250 mill. Tekhnologiya legkikh splavov. 2012. No. 3. pp. 88–95.
11. Samodurova М. N., Barkov L. А., Ivanov V. А. Molybdenum metallurgy and powder technology. Chelyabinsk: Izdatelskyi tsentr YuUrGU. 2014. 185 p.
12. Molyarov V. G., Kalashnikova A. V., Molyarov A. V., Belomytsev M. Yu., Endel N. I. Promising Bimetallic Construction Material with Increased Strength and Corrosion Resistance. Metallurgist. 2017. Vol. 60. pp. 1197–1201.
13. Qiaoling Chu, Ruixiang Bai, Min Zhang, Jihong Li, Zhenkun Lei et al. Microstructure and mechanical properties of titanium/steel bimetallic joints. Materials Characterization. 2017. Vol. 132. pp. 330–337.