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Active control system of mill products tension at the outlet of roughing train in continuous light-section mill

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Authors:

M.Kuzmenko, orcid.org/0000-0002-1989-242X, National Metallurgical Academy of Ukraine, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

М.Rybalchenko, Cand. Sc. (Tech.), orcid.org/0000-0001-5162-5201, National Metallurgical Academy of Ukraine, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.Boyko, orcid.org/0000-0002-9714-2843, National Mining University, Dnipro, Ukraine

D.Beshta, orcid.org/0000-0003-2848-2737, National Mining University, Dnipro, Ukraine

Abstract:

Purpose. To find the regularities that provide control of interstand force in the roughing train.

Methodology. The methodology for solving the problem of control of interstand forces in a roughing train is based on the estimation of the change in the controller output of deflection/loop tension of the rolled product, which will ensure the stability of the cross-sectional dimensions of the rolled product at the outlet of the roughing group.

Findings. The work deals with an issue of decreasing gage interference of bar section by controlling speed rate of rolling in a roughing train. A method for controlling the interstand force in the roughing train based on the analysis of a low-frequency component of disturbance which occurs during automatic stabilizationof free deflection/loop in the finishing train is substantiated and tested. The proposed system of active control of rolling tension enables to stabilize the transverse dimensions of mill bar before the finishing train. The research results have shown that the ultimate objective function of interstand forces control in the roughing trains is to minimize the scattering of dimensions of the rolled product at the outlet of the roughing trains. Active regulation of the rolling tension for stabilizing the cross-sectional dimensions of the rolled product at the roughing train outlet is rationally carried out using program control for the rolling speed rate in the first interstand space of the finishing train.

Originality. General regularities that provide the interstand force identification through the change of the regulator outlet of the rolling deflection/loop were determined.

Practical value. The organization of interstand force control in the roughing train after the obtained dependencies allows stabilizing the cross-sectional dimensions of the rolled product in the finishing train.

References.

1. Kuvaiev, V. M. and Beshta, D. О., 2017. Dynamic model of interaction of mechanisms on the section between the roll mill stand and the coiler in the process of wire winding by Garrett reel. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 4, pp. 61‒66.

2. Egorov, A. P., Zvorykin, V. B., Mikhalev, A. I. and Kuzmenko, M. Yu., 2016. Modeling of multiply connected control systems for high-speed rolling mode on a continuous light-section mill.Systemni tekhnolohiyi. Rehionalnyy mizhvuzivsʹkyy zbirnyk naukovykh prats’, 5(106), pp. 36‒44.

3. Andryushin, I. Yu., Shubin, A. G. and Gostev, A. N., 2014. Development of mathematical model for interrelated electrical and mechanical systems of rolling mill roughing train. Teoriya i praktika avtomatizirovannogo elektroprivoda, 3(24), pp. 24‒31.

4. Karandaev, A. S., Khramshin, V. R., Radionov, A. A., Andryushin, I. Yu., Galkin, V. V. and Gostev, A. N., 2013. Coordination of rolling stand electric drive speed of continuous train of rolling mill, Vestnik IGEU, 1, pp. 98‒103.

5. Shubin, A. G., Gostev, A. N., Khramshin, R. R. and Odintsov, K. E., 2015. System of interstand tension compensation in roughing train of rolling mill research using mathematical modeling method. Teoriya i praktika avtomatizirovannogo elektroprivoda, 4(29), pp. 10‒21.

6. Beshta, А. С., Kuvaev, V. N., Potap, O. E. and Ego­rov, A. P., 2014. Automation of technological processes on light-section rolling mills: monograph. Dnepropetrovsk: Zhurfond.

7. Kuvaev, V. N., 2010. Identification of interstand efforts at continuous rolling on static loading moment of stand’s electric drives. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu [online], 7‒8, pp. 77‒81. Available at: http://nvngu.in.ua/index.php/ru/arkhiv-zhurnala/po-vypuskam/637-/soderzhanie-7-8/elektrotekhnicheskie-kompleksy-i-sistemy/1763-identifikatsiya-mezhkletevykh-usilij-pri-nepreryvnoj-prokatke-po-staticheskomu-momentu-nagruzki-elektroprivodov-kletej [Accessed 5 May 2017].

8. Shokhin, V. V., Khramshin, V. R. and Nowicki, R. Yu., 2017. Mathematical Simulation of Roughing Electric Drives of 450 Bar and Shape Mill Mounted at Arch-Furnace Plant of Magnitogorsk Iron and Steel Works, OJSC. Bulletin of the South Ural State University. Ser. Power Engineering, 17(2), pp. 58–66. DOI: 10.14529/power170208.

9. Аleinikova, A. A. and Deryuzhkova, N. E., 2015. Мathematical model of two adjacent stands of a wire mill during rolling with loop formation. In: Materials of the 45th scientific and technical conference of students and graduate students, April 1‒14, 2015, Komsomolsk-on-Amur, рp. 17‒20. Available at: <https://knastu.ru/media/files/page_files/page_1425/SBORNIK_GOTOVYY.pdf> [Accessed 14 May 2017].

10. Beshta, O., Nolle, E. and Kuvaiev, M., 2016. Entwurf einer einfachen und modifizierten Rastmomentkompensation für die permanenterregte Synchronmaschine. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 6(156), pp. 95–100.

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ISSN (print) 2071-2227,
ISSN (online) 2223-2362.
Journal was registered by Ministry of Justice of Ukraine.
Registration number КВ No.17742-6592PR dated April 27, 2011.

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