Mar 30, 2021 Y. Zhong, S. Tan, and X. Xu, “Research and application of the feedforward AGC system in hot strip rolling mills,” Journal of Northeastern University (Natural Science), vol. 30, no. 2, pp. 169–171, February 2009. Google Scholar [39]
4-high rolling mills used for reduction and skinpass at its Hagen, Germany, location. In this case, each mill uti-measurement. The application at each roll mill required a set of two LSVs, one located on either side of the mill. The combina-tion measures strip entry and exit speed for determining elongation or for mass flow calculations.
Dec 22, 2013 Main Features of a modern Hot Strip Mill. The objective of a hot strip mill (HSM) is to reheat and roll thick slabs into thin strip with a wide range of thickness. Because of its huge size and large investment a hot strip mill need to have a life time of several decades. The mill must be capable of meeting the market demands for a wide range of ...
Rolling Mill Technology. Rolling Mill technology is a core competency of IMS. This is where IMS truly got its start, and remains at the heart of what we do. When it comes to Rolling knowledge and experience, IMS is a world leader. IMS was one of the first companies to pioneer the application of PLC systems to all aspects of rolling mill control.
Apr 22, 2020 The rolling mill vibration is characterized by the coupling effects among mechanical, electrical, hydraulic and interfacial subsystems. The influence of the mill modulus control gain in automatic gauge control on the vibration in hot rolling mills was investigated. Firstly, an experiment related to the mill modulus control gain was carried out in the hot rolling mill process, and it was …
maximum rolling speed of a cold or foil mill, 8 meters of strip is produced. It is easy to see why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1)
C OUPLING VIBRATION MODEL FOR HOT ROLLING MILLS AND ITS APPLICATION. JIMIN W U, X IAOQIANG Y AN ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1799 speed at entry and exit, respectively; 5, 6 and are the strip entry angle, the strip exit angle and the neutral angle, respectively; R is the roll speed; D is the roll gap spacing along the
ANDRITZ Herr-Voss Stamco provides engineering and supply of new or upgraded roll change equipment for rolling mills. Mill types included are skin pass, temper, hot and cold rolling mills. Mill configurations include 2 High, 4 High and 6 High. Styles that are provided are as follows: Porter bar. Hydraulic cylinder retraction and insertion.
maximum rolling speed of a cold or foil mill, 8 meters of strip is produced. It is easy to see why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1)
[3]. Z. X. Li and X. H. Liu, Research of the Gauge Control System for 2160 Hot Strip Mill at Shrugging, Metallurgical Industry Automation, 2010, 100-102. [4]. X. C. Zhang, Development and Application of AGC Control System for 1500mm Hot Continuous Rolling in …
In this article the AGC (Automated Gauge Control) system, of a hot rolling mill is analyzed and different methods are described to improve its performance. The mill stretch compensation and other disturbances during the rolling process are
Thickness precision is one of the most important quality indexes in strip rolling process [2, 3].Monitor automatic gauge control (AGC) based on hydraulic roll gap control system is widely used in modern strip rolling mills [4–7].In monitor AGC system, gauge meter is used to measure strip gauge derivation, which is installed at the delivery side of the finishing mill.
Mar 16, 2014 The novel GM-AGC system has been applied successfully in a hot strip mill, the application results show that the thickness control precision is improved significantly, with the novel GM-AGC system, over 98.6% of the strip thickness deviation of 3.0 mm class can be controlled within the target tolerances of 20 μm.
In order to improve the quality of the hot strip gage and to reduce the strip thickness deviation, the automatic gauge control (AGC) system now is widely used in modern hot strip mills. Mill...
According to the virtual model fitted by true measured parameters, the Smith predictor in the monitor AGC was applied to predict the gauge error in the finishing mill and used this gauge error to control the …
Thickness accuracy of plate production depends on Automatic Gauge Control (AGC) in the plate mill area. A typical modern thickness control system design and implementation of a steel plate mill is discussed together with the impact on the design of process models, available measurements, available control actuators and material properties. A highlevel software design approach provides the ...
posed control approach obtained from an industrial hot strip rolling mill show a signicant improvement of the strip thickness accuracy compared to the existing standard controllers. The proposed adaptive feedforward control strategy is now in permanent operation at the considered rolling mill. Nomenclature Abbreviations AGC Automatic gauge control
be satisfied in hot rolling mills; these are the dimensional quality and mass flow of the strip. The dimensional quality specification includes the thickness, width, flatness and profile of the strip. Control is performed by dedicated control sys-tems such as AGC (Automatic Gauge Control), AWC (Automatic Width Control), ASC (Auto-
Narrow Strip & Plate Mills. Preet & our associates (Engineering Companies) has designed, manufactured and successfully delivered Semi Continuous narrow Hot Strip Mill. Semi Continuous Hot Strip Mill which incorporates the latest proven technology and know-how available in the steel industry. Our experienced team of engineers and design has ...
Descales are a must in hot strip mills for attaining good surface quality.Present day descales employ state of the art nozzle technology with highly effective application of high pressure water (upto 400 bars). Descales are usually of closed design to prevent water from escaping.
Over the years, our steel mill applications has covered the whole steel making production line, from ship unloader, sintering machine, coke ovens, torpedo cars, blast furnaces, BOF (basic oxygen furnaces), EAF (electric arc furnaces), continuous casting machines, furnaces, hot strip mills, plate mills, rolling mills, roughing stands, finishing ...
Because conventional PID controller is difficult to solve the pure lag problem, so the technology of monitor AGC caused in hot strip rolling mills, the control strategy of predicted extrapolation data processing algorithm is put forward. It figures out stability and dynamic nature of system that the pure lag and programmed algorithm induce.
the endless hot strip rolling practical by minimizing the idle time. ... and then to the finishing mill stands of the continuous hot rolling mill of the Yawata Works, which was commissioned in 1982. ... Fig. 7 Improvement of gauge accuracy through application of absolute mode AGC Fig. 8 Result of automatic crown set-up control
The rolling stand in FIG. 1, a four-high rolling stand, is used for the hot rolling or cold rolling of metallic strip material 1, which consists, e.g., of various grades of steel, and has backup rolls 2, 3 and work rolls 4, 5, each of which is pivoted in chocks 6, 7.
Qty. 1 Second-hand double stand cold rolling mill stand Mfc.: SMS/Germany Type: 4-Hi Double Stand Cold Rolling Mill Built: 2009 Stopped: 2017 Capacity: 800,000 Ton/Year Annual running: 6480 h Strip width: 800 – 1650 mm Thickness entry: 1.8~5.0 mm Exit: 0.3 – 2.5 mm Coil OD: 1000~2200 mm Coil ID: 610 mm Coil Weight: Max. 30 T Line Speed: max. 1350 m/min Threading Speed: 30 m/min
hot steel strip rolling mill Top PDF hot steel strip rolling mill: COMPUTER SIMULATION AND EXPERIMENTAL STUDY FOR CALCULATION OF SLAB SLIP FORWARD FACTOR IN FINISHING ROLL AREA OF HOT STRIP MILL OF MOBARAKEH STEEL COMPANY Of the most important of these changes, one can ...
Descales are a must in hot strip mills for attaining good surface quality.Present day descales employ state of the art nozzle technology with highly effective application of high pressure water (upto 400 bars). Descales are usually of closed design to prevent water from escaping.
Oct 01, 2020 The application of oil lubrication in hot strip rolling has many advantages for the process, i. e., reduced roll force, reduced energy consumption, better strip surface quality, and reduced roll wear.On the other hand, oil lubrication may also induce severe disturbances for several control loops in a tandem hot rolling mill, which can reduce the final strip quality or might even jeopardize a ...
the endless hot strip rolling practical by minimizing the idle time. ... and then to the finishing mill stands of the continuous hot rolling mill of the Yawata Works, which was commissioned in 1982. ... Fig. 7 Improvement of gauge accuracy through application of absolute mode AGC Fig. 8 Result of automatic crown set-up control
narrow hot strip mill is here described. DOI: 10.1115/1.2361323 Keywords: hot strip rolling mills, multi-variable control, multi-objective control, dy-namic models 1 Introduction In this paper we report the results concerning the application of advanced multi-variable control techniques to hot strip mills HSM .
