EXPERIMENTAL STUDY ON POWER PARAMETERS OF “ROLLING - ECA-PRESSING” COMBINED PROCESS
https://doi.org/10.23947/1992-5980-2018-18-3-289-299
Abstract
Introduction. Power parameters of the “rolling − equalchannel angular pressing” (ECA) combined process are studied. The work objective is to determine forces of rolling and pressing in the deformation by the combined method.
Materials and Methods. The die strength calculation and the experiment on deformation of AISI 6063 aluminum samples were carried out. During the experiment, the force values were recorded using a strain-gauge station.
Research Results. The strength analysis results show that this die design is suitable for creating an experimental stand of the “rolling − ECA-pressing” combined process, since the calculated safety margin is sufficient to implement the pressing under extreme conditions. The rolling forces at all stages of the deformation exceed the corresponding pressing forces, which is a necessary condition for the combined process. Discussion and Conclusions. The obtained results can be used in the design of experimental stands that implement the investigated combined process. Herewith, the given strain-gauge method for studying strength characteristics is suitable for the case of calibrated rolls.
About the Authors
A. B. NaizabekovKazakhstan
Naizabekov, Abdrakhman B. - rector, Dr.Sci., professor.
38, 50 let Oktyabrya St., Rudny, Kostanay region, 111500.S. N. Lezhnev
Kazakhstan
Lezhnev, Sergey N. - associate professor of the Metallurgical Engineering and Mining Department, Cand.Sci.
38, 50 let Oktyabrya St., Rudny, Kostanay region, 111500.T. A. Koinov
Bulgaria
Koinov, Toncho A. - professor of the Physical Metallurgy and Thermal Generating Units Department, Dr.Sci., professor.
8, Kliment Ohridsky Blvd., Sofia, 1756.E. A. Panin
Kazakhstan
Panin, Evgeny A. - senior lecturer of the Metal Forming Department.
30, Republic Ave., Temirtau, Karaganda region, 101400.References
1. Jahedi, M. High-Pressure Double Torsion as a Severe Plastic Deformation Process: Experimental Procedure and Finite Element Modeling / M. Jahedi, M. Knezevic, M.-H. Paydar // Journal of Materials Engineering and Performance. — 2015. — Vol. 24, iss. 4. — P. 1471–1482.
2. Straska, J. Evolution of microstructure and hardness in AZ31 alloy processed by high pressure torsion / J. Straska [et al.] // Materials Science and Engineering: A. — 2015. — Vol. 625. — P. 98–106.
3. Alhamidi, A. Grain refinement and high strain rate superplasticity in aluminium 2024 alloy processed by high-pressure torsion / A. Alhamidi, Z. Horita // Materials Science and Engineering: A. — 2015. — Vol. 622. — P. 139–145.
4. Valiev, R.-Z. Principles of equal-channel angular pressing as a processing tool for grain refinement / R.- Z. Valiev, T.-G. Langdon // Progress in Materials Science. —2006. — Vol. 51. — P. 881–981.
5. Microstructure and mechanical properties of Al-7075 alloy processed by equal channel angular pressing combined with aging treatment / M.-H. Shaeri [et al.] // Materials & Design. — 2014. — Vol. 57. — P. 250–257.
6. Effect of route on tensile anisotropy in equal channel angular pressing / X. Zhang [et al.] // Materials Science and Engineering: A. — 2016. — Vol. 676. — P. 65–72.
7. Microstructure and tensile properties of Cu-Al alloys processed by ECAP and rolling at cryogenic temperature / W. Wei [et al.] // Journal of Alloys and Compounds. — 2016. — Vol. 678. — P. 506–510.
8. Microstructural, texture, plastic anisotropy and superplasticity development of ZK60 alloy during equal channel angular extrusion processing / E. Mostaed [et al.] // Metallurgia Italiana. — 2015. — Iss. 11–12. — P. 5–12.
9. Inhomogeneity in strain, microstructure and mechanical properties of AA1050 alloy during twist extrusion / F.-J. Kalahroudi [et al.] // Materials Science and Engineering: A. — 2016. — Vol. 667. — P. 349–357.
10. Finite element analysis of the plastic deformation in tandem process of simple shear extrusion and twist extrusion / J.—G. Kim [et al.] // Materials & Design. — 2015. — Vol. 83. — P. 858–865.
11. Bar Bahadori, S.-R. Comparison of microstructure and mechanical properties of pure copper processed by twist extrusion and equal channel angular Pressing / S.-R. Bar Bahadori, K. Dehghani, S.-A.-A.-A. Mousavi // Materials Letters. — 2015. — Vol. 152. — P. 48–52.
12. Modeling and Characterization of Texture Evolution in Twist Extrusion / M. I. Latypov [et al.] // Metallurgical and Materials Transactions: A. — 2016. — Vol. 47A, iss. 3. — P. 1248–1260.
13. Устройство для обработки металлов давлением : патент 2181314 Рос. Федерация : 7 B21D25/02 / Г. И. Рааб [и др.] ; Уфимский государственный авиационный технический университет. — № 2000115099/02 ; заявл. 09.06.2000 ; опубл. 20.04.2002, Бюл. № 16.
14. Naizabekov, A. B. Change in Copper Microstructure and Mechanical Properties with Deformation in an Equal Channel Stepped Die / A. B. Naizabekov, S. N. Lezhnev, I. E. Volokitina // Metal Science And Heat Treatment. — 2015. — Vol. 57, iss. 5–6. — P. 254–260.
15. Устройство для непрерывного прессования металла : патент 25863 Республика Казахстан : B21J 5/00 / А. Б. Найзабеков, С. Н. Лежнев, Е. А. Панин ; Карагандинский государственный индустриальный университет. — № 2011/0762.1 ; заявл. 02.07.11; опубл. 16.07.12 , Бюл. № 7. — 6 с.
16. Theoretical grounds of the combined «rolling — equal — channel step pressing» process / A. Naizabekov [et al.] // Journal of Chemical Technology and Metallurgy. — 2016. — Vol. 51, iss. 5. — P. 594–602.
17. Найзабеков, А. Б. Моделирование совмещенного процесса «прокатка — прессование» с использованием равноканальной ступенчатой матрицы / А. Б. Найзабеков, С. Н. Лежнев, Е. А. Панин // Труды Университета. — 2008. — № 3. — С. 16–19.
18. Lezhnev, S. Investigation of the Influence of Geometric and Technological Factors on the Stress — Strain State of Metal in the Implementation of the Combined Rolling —Pressing Process / S. Lezhnev, E. Panin // Advanced Materials Research. — 2014. — Vol. 936. — P. 1918–1924.
19. Evaluation of the effectiveness of the use of horizontal and vertical rolls in the «Rolling — pressing» process on the basis of the stress — strain state studying / S. Lezhnev [et al.] // IOP Conf. Series: Materials Science and Engineering. — 2017. — Vol. 179, № 012047. — 5 р.
20. Study of broadening in a combined process «rolling — pressing» using an equal — channel step die / A. Naizabekov [et al.] // Journal of Chemical Technology and Metallurgy. — 2015. — Vol. 50, iss. 3. — P. 308–313.
21. Lezhnev, S. Research of combined process «Rolling — pressing» influence on the microstructure and mechanical properties of aluminium / S. Lezhnev, E. Panin, I. Volokitina // Advanced Materials Research. — 2013. — Vol. 814. — P. 68–75.
22. Influence of Combined Process «Rolling — pressing» on Microstructure and Mechanical Properties of Copper / A. Naizabekov [et al.] // Procedia Engineering. — 2014. — Vol. 81. — P. 1499–1504.
23. The Role of Preliminary Heat Treatment in the Formation of Ultrafine — Grained Structure in the Implementation of the Combined Process «Rolling — Equal Channel Angular Pressing» / A. Naizabekov [et al.] // Materials Science Forum. — 2016. — Vol. 879. — P. 1093–1098.
24. Система прочностного анализа APM FEM для КОМПАС-3D [Электронный ресурс] / ООО Научно-технический центр «АПМ». — Режим доступа: http://apm.ru/produkti/programmnie_kompleksi/APM_FEM (дата обращения: 14.07.18).
25. Тензометрическая станция ZET 017-T8 [Электронный ресурс] / Предприятие «Электронные технологии и метрологические системы» (компания ZETLAB). — Режим доступа: https://zetlab.com/shop/izmeritelnoeoborudovanie/tenzostantsii/tenzostanciya-zet-017-t8. (дата обращения: 14.07.18).
Review
For citations:
Naizabekov A.B., Lezhnev S.N., Koinov T.A., Panin E.A. EXPERIMENTAL STUDY ON POWER PARAMETERS OF “ROLLING - ECA-PRESSING” COMBINED PROCESS. Vestnik of Don State Technical University. 2018;18(3):289-299. https://doi.org/10.23947/1992-5980-2018-18-3-289-299