Siberian State Industrial University (Novokuznetsk, Russia)

A. R. Fastykovsky, Dr. Eng., Associate Prof., E-mail: fastikovsky@mail.ru

JSC “EVRAZ ZSMK” (Novokuznetsk, Russia)

E. V. Chinokalov, Chief Specialist, E-mail: Evgeny.Chinokalov@evraz.com

A new promising type of product is considered - a long multiplethread screw reinforcement profile. The advantages of the new profile in comparison with the classic reinforcement profi le are given. A method for obtaining a new profi le is described, and conditions are defined under which long-length multiple-thread screw profiles can be obtained by drawing without twisting. The formula for determining the pitch of the screw surface, depending on the main factors affecting the process is obtained. It has been established that the proposed method of obtaining long-dimensional screw profiles by drawing without twisting is energetically more advantageous than the classical method combining the operations of drawing and twisting.

1. GOST 34028-2016. Reinforcing rolled products for reinforced concrete constructions. Specifications. Introduced: 01.01.2019. Moscow: Standartinform, 2017. 43 p.
2. Ivchenko А. V., Gul Yu. P. Improvement of standards and tensile test methods for reinforcing bars. Metallurgicheskaya i gornorudnaya promyshlennost. 2014. No. 6. pp. 125–128.
3. Polyakova М. А., Gulin А. Е., Nikitenko О. А. et. al. Features of ultrafine structure forming and mechanical properties of carbon wire during process of complex deformation action. Stal. 2014. No. 5. pp. 93–96.
4. Sychkov А. B., Malashkin S. О. Regularities of structure and properties forming for wire rolls during its production. Metallurg. 2016. No. 8. pp. 87–93.
5. Kumar D. S. et al. High-strength rebar production in the new rolling plant at B.S.R.M. in Bangladesh. MPT Int. 2013. Vol. 36. No. 1. pp. 42–44, 46.
6. Braga S., Muscarà G., Galimberti S. et al. Start-up of the modernized rebar mill at Ferriera Valsabbia SpA, Italy. 25 percent capacity boost. Metals & Mining. 2009. Vol. 3. pp. 82–83.
7. Baykushev А., Manolov V., Lukarsky Ya. Compact machine for cold drawing and ribbing of reinforced steel. Inzhenernye nauki. 2012. No. 4. pp. 71–79.
8. Manolov V., Petrov P. et. al. Reduction technology for cold drawing of reinforced steel. Inzhenernye nauki. 2011. No. 1. pp. 54–61.
9. Zhelezkov О. S., Malakanov S. А., 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.
10. Kharitonov V. А., Gallyamov D. E. New modular combined steel wire production method. Chernye Metally. 2019. No. 2. pp. 42–48.
11. GOST 6727-80. Cold-drawn low-carbon steel wire for reinforced concrete. Specifications. Introduced: 01.01.1983.
12. Kargin V. R. Processes for obtaining screw profi les and tubes. Moscow: Metallurgiya, 1994. 96 p.
13. Goloviznin S. М., Pokachalov V. V., Pykhov L. E. Effect of drawing rate on mechanical properties of high-strength reinforcing wire. Vestnik Magnitogorskogo gosudarstvennogo tekhnicheskogo universiteta imeni G. I. Nosova. 2015. No. 4. pp. 71–74.
14. Fastykovsky A. R., Chinokalov E. V., Amelin A. V., Leboshkin B. M., Fastykovsky D. A., Meshkov V. Z. Method to produce screw-like shapes. Patent RF No. 2553728. Published: 20.06.2015. Bulletin No. 17.
15. Fastykovsky A. R., Chinokalov E. V., Kadykov V. N., Chinokalov V. Ya. Roller die. Patent RF No. 143099 U1. Published: 10.07.2014. Bulleting No. 19.
16. Fastykovsky A. R., Chinokalov E. V., Milovanov А. G. Cold-drawn reinforced wire with screw profile. Metallurg. 2014. No. 6. pp. 128–131.