ISSN 10683712, Russian Electrical Engineering, 2013, Vol. 84, No. 8, pp. 441–445. © Allerton Press, Inc., 2013.
Original Russian Text © A.S. Karandaev, V.R. Khramshin, I.Yu. Andryushin, S.A. Petryakov, R.R. Khramshin, 2013, published in Elektrotekhnika, 2013, No. 8, pp. 34–38.
Improvement of automated electric drives and
automated control systems of production parameters
of broadstrip hotrolling mills (BSHRMs) is the most
important area in the development of rolling produc
tion. Very stringent demands are currently being made
to separate BSHRM systems—in particular, systems
of automated thickness control of the strip (ATCS).
Modern ATCSs should provide a limiting gauge inter
ference in tolerance limits of ±0.025 mm for 90–98%
of the strip length. This is associated with the fact that
up to 25% of a thin hotrolled strip is not subjected to
further cold treatment, i.e., it is a final market product
. Widening of the assembly due to rolling thin strips
0.8–1.5 mm thick is a generally accepted world trend.
The Davy McKee (United Kingdom) SATC is cur
rently most widely used at active Russian and foreign
mills [1, 2]. It has been set up at more than 300 rolling
mills, including mills 2000 and 2500 at the Magni
togorsk Iron and Steel Works (OAO MMK). It auto
matically controls the thickness in a function of the
roll space and rolling force according to the gaugeme
ter principle (a gaugemeter being an absolutely rigid
The ATCS complex of a finishing train (nos. 7–13)
of mill 2000, which is schematically represented in
Fig. 1, contains hydraulic screwdown structures
(HSSs) with hydraulic cylinders (HCs), an ATCS of
the strip produced by Davy McKee, and a hydraulic
Method for Correction of Gauge Interference
of the HeadStrip Section in a System for Automated Controlling
of the Thickness of a BroadStrip HotRolling Mill
A. S. Karandaev
, V. R. Khramshin
, I. Yu. Andryushin
, S. A. Petryakov
, and R. R. Khramshin
South Ural State University, Chelyabinsk, 454080 Russia
Magnitogorsk State Technical University, Magnitogorsk, 455000 Russia
Magnitogorsk Iron and Steel Works, Magnitogorsk, 455000 Russia
Received July 15, 2013
—To compensate for gauge interference caused by increased temperature of the headstrip section
during milling on a broadstrip hotrolling mill, a method for automated correction of thickness is proposed.
Its essence lies in additional separation of the rolls during rolling of the head section with its subsequent return
into the specified position for rolling the main strip length. The structure of the system for automated con
trolling, which implements this method, is considered. Rational parameters for correction of the roll space
for the strips of diverse assembly are substantiated. The results of experiments performed at roll 2000 of the
Magnitogorsk Iron and Steel Works are presented.
: broadstrip hotrolling mill, automated thicknesscontrol system, strip, gauge interference, correction
Block diagram of the ATCS of mill 2000 at OAO MMK.
The original version of this article was revised: Previously missing affiliations were added.