Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
IMPLEMENTATION OF AUTOMATION SYSTEMS ON CONTINUOUS COLD ROLLING MILL «1700» AT PJSC «MARIUPOL METALLURGICAL PLANT»
Abstract:

In 2014 the following process automation systems were implemented on a continuous 4-stand cold rolling mill “1700” at PJSC “Mariupol Metallurgical Plant n.a. Ilyich”:

-          system of thickness and tension regulation (SARTiN);

-          system of tension regulation during strip feeding (SRNZ);

-          system of automatic strip head end reduction (SAOP).

Eight tension regulators and limiters and two thickness regulators are implemented in the new SARTiN system which is based on a programmable controller Simatic S7-400. In case of tension discrepancy in the interstand interval screw tension regulators (RNV) influence the speed of screwdowns of the following stand. Stand tension regulators 2 and 3 (RNK2 and RNK3) influence the speed of stands 2 and 3 and operate according to feedback signal about the difference between tension discrepancy in two adjacent interstand intervals. Integral thickness regulator on the output side of the mill influences the speed of stands 3 and 4 simultaneously because of the low level of reduction in stand 4.

SRNZ and SAOP systems are also implemented on the rolling mill. These systems operate at the beginning of the rolling process before SARTiN is activated.

As a result of implementation of new systems the amount of defective product per 1 ton of end product has been reduced from 7% to 1,5%.

Authors:
Keywords
DOI
10.15276/etks.15.91.2014.42
References

Braun A.E., and Vakhrushev S.M. Modernizatsiya ASU TP reversivnogo stana 1200 PTS. [Revamping of Process Control System of Reversible Rolling mill 1200 PTS], (2009), Avtomatizatsiya v Promyshlennosti Publ., No. 8.

2. Abbas A., (2001), Control of Aluminum Rolling mills, Materials and ManufacturingProcesses, 16(5), pp. 691 – 700.

3. Soler N., Isermann R., and Feldmann F., (2008), Improved Drive Control for Multi-Stand Cold Rolling Mills, Proceedings of the 17th World Congress the International Federation of Automatic Control Seoul, Korea, pp. 1006 – 1011.

4. A.C. No. 228116, “Sposob sinkhronizatsii dvizheniya nazhimnykh vintov prokatnoy kleti”[Method of Synchronization of Stand Screwdowns’ Movement], (1969), Dralyuk B.N., Vinogradov L.G., Tikotskiy A.E., BI No. 3, 1969.

5. A.C. No. 250857, “Ustroystvo dlya regulirovaniya natyazheniya polosy na motalke prokatnogo stana”[Strip Tension Regulating Device on Rolling Mill Coiler]. (1969), Valdyrev A.S., Dralyuk B.N., Tikotskiy A.E., Al’shits V.M., BI No.27, 1969.

6. А.С. No. 354917, “Sposob opredeleniya momenta nachala tormozheniya listoprokatnogo stana” [Method of Defining of Moment of Deceleration of a Sheet Rolling Mill]. (1972), Valdyrev A.S., Tikotskiy A.E., BI No.31.

7. А.С. No. 461747, “Sposob upravleniya skorost’yu nepreryvnogo mnogoklet’evogo stana kholodnoy prokatki” [Way to Сontrol the Speed of Continuous Mnogoletnego cold Rolling Mill"], (1975), Valdyrev A.S., Dralyuk B.N., Mamkin V.M., Sinayskiy G.V., Tikotskiy A.E., BI, No. 8.

8. А.С. No. 569347 “Sposob sinkhronizatsii dvizheniya nazhimnykh vintov prokatnoy kleti” [Method of Synchronization of Stand Screwdowns’ Movement], (1977), Dralyuk B.N., Vinigradov L.G., Tikotskiy A.E., Braun A.E., BI 1977, No.31.

9. А.С. No. 10379831, “Ustroystvo regulirovaniya mezhkletyevogo natyazheniya na neprepyvnom stane kholodnoy prokatki” [Interstand Tension Regulating Device on a Continuous Cold Rolling Mill]. (1983), Braun A.E., Dralyuk B.N., Tikotskiy A.E., BI 1983, No. 32.

10. А.С. No. 1639818, “Ustroystvo dlya regulirovaniya tolshchiny polosy na odnoklet’evom stane kholodnoy prokatki PO “Uralmash” [Strip Thickness Regulating Device on 1-stand Cold Rolling Mill]. (1991), Dralyuk B.N., Tikotskiy A.E., Kontoroviya B.I., Mishin Y.A., Malanov A.L., Kolmakov L.G., Kasyanov V.N., Dokuchaev D.V., BI 1991, No.13.

 

Published:
Last download:
2017-11-22 22:01:53

[ © KarelWintersky ] [ All articles ] [ All authors ]
[ © Odessa National Polytechnic University, 2014. Any use of information from the site is possible only under the condition that the source link! ]
Яндекс.Метрика