between the tandem rolling stands and a control method based on the model predictive control ... end of the strip steel sheet reaches the down coiler and a tension is applied, both measurement results show good agreement as the strip ... of the rolling mill stand. In such control systems, since the strip

Aug 09, 2013· Flatness sensing based on pressure measurement is widely used today in the steelmaking industry. In fact, it is the most commonly used technique for flatness measurement in cold rolling mills. Contact flatness sensors for flatrolling mills and production lines are rollers with builtin sensors.

Design tension levelling lines and ... FAGOR offers a full assistance and training service during the setup and startup of the lines and rolling mills. The process control and modelling systems are also integrated, with a team specialising in processing lines and rolling mills. FAGOR's six plants also enable us to optimise the manufacture ...

rolling mill, dedicated roll cooling systems are required to fulfill the required functions. Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to control the flatness of the strip in cold rolling mills.

Jun 12, 2015· In order to improve the control performance of strip rolling mill, theoretical model of the hydraulic gap control (HGC) system was established. HGC system offline identification scheme was designed for a tandem cold strip mill, the system model parameters were identified by ARX model, and the identified model was verified.

An optimal multivariable looper control system based on new decoupling strategy has been developed for hot strip finishing mills. The variables coupling degree is determined by the diagonal dominance degree of inverse Nyquist curve. Through pseudodiagonalisation compensating the loopers′ height and tension control system has the diagonal dominance characters.

Digital Optimal Control of Multistand Rolling Mills ˙˙ 263 Journal of Engineering Science and Technology April 2014, Vol. 9(2) Section 4, and the proposed algorithm is then applied to a typical rolling process in Section 5. Finally, the concluding remarks are given in section 6. 2. Rolling Mill Behavior

Rolling Mill Controls K. J. JENTZEN (1985, 1995) B. G. LIPTÁK ... level2 process control for hot strip mills, rolling mill simulations, multistand and multipass mills Danieli Automation, USA, automation and process control systems for metals indus ... The DC drive also lends itself to tension control because of its simple currenttorque ...

Hot Rolling Mill Hydraulic Gap Control (HGC) thickness control improvement Peter Kucsera*, Zsolt ... Abstract: 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 ... P. Kucsera et al. Hot Rolling Mill HGC Thickness Control ...

A Cold Rolling Mill rolls, in subsequent short passes(due to the relative thick material), coiled strip from a thickness of up to 8 mm (coming from Hot Rolling Mill) down to mm; the mill is designed with high rolling force and power capability and efficient and fast coil handling to minimize the waiting time.

Abstract—The role of a hot rolling mill process is to produce strips of thickness about ∼ 20 mm from heated slabs. One of the major control problems in hot rolling mills are the looper and tension control loops because these have a significant impact on the dimensional quality of a strip and process stability.

Aimed at the complex demand of hot strip rolling mill in practicing, the configuration of the coiler and the technological process is analyzed. The arithmetic of coiling tension and the control process is introduced. The frame of the tension adjusting system is given. The coiler control system hardware is designed. The system is designed scientifically with steady control and meets demand of ...

Thickness gauges for centre line and profile measurement in cold rolling mills: Multi channel profile measurement for continuous cross profile measurement: Speed measurement for mass flow control: At cold rolling mills on Tandem mills and reversing stands as set value for the process control

Simulating a MultiStage Rolling Mill Process, Part 3: Tension Control. From the series: Simulating a MultiStage Rolling Mill Process. Alec Stothert, MathWorks. This webinar is the third in a threepart series that highlights the use of MathWorks products for modeling and control of a multistage rolling mill process. In this webinar, you will ...

shape control method is adopted in which the specific portions of the work roll barrel are hydraulically and selectively pushed (FFC method) by the bending rolls, as shown in Fig. 2. (2) For rolling mills with a long barrel, as a method of bending a work roll, an outboard bending mechanism is

POINTWISE LINEAR QUADRATIC OPTIMAL CONTROL OF A TANDEM COLD ROLLING MILL John R. Pittner, PhD University of Pittsburgh, 2006 The tandem cold rolling of metal strip is a complex multivariable process whose control presents a significant engineering challenge. The present technology generally relies on a control

In steel rolling industry, control of hot metal rolling process plays an important role in assuring high product quality and safe process operation. Although many advanced looper control technologies for finishing rolling process have emerged, looperless interstand tension control of roughing rolling mills remains a challenging problem.

the speed of the drive mill motor. Of the control systems that can directly or indirectly influence the specifications of the HSMP, the looper control system, whose controlled outputs are the strip tension and looper angle, is a key subsystem for the safe rolling process and stable strip quality. Strip tension control is

the hot rolling mill is coiled for transport to the cold mill which might be on the same site or elsewhere. Cold mills, in a wide range of types and sizes are available; some are single stand, others 3 stand and some 5 stand (Figures and ). Cold rolling speeds vary but modern mills operate at exit speeds as high as 3000 m per

This is the first in a threepart webinar series that will highlight the use of MathWorks products for modeling and control of a multistage rolling mill process. In this webinar MathWorks engineers demonstrate the benefits of using Simulink as a platform for modeling and control system design for a sheetmetalrolling application.

【摘要】：In order to lucubrate the rolling characteristic of the two stands reversible cold rolling mill and establish the tension and thickness control strategy, the steadystate characteristic simulating program was established using the steadystate continuous rolling influences of each factor on exit thickness under different tension control methods were analyzed.

control of hazards in cold rolling mill in stainless steel plant using Workplace Risk Assessment and Control (WRAC) technique different researchers in the field of risk assessment. to identify, analyze hazards and recommend necessary control measures for them. Keywords: cold rolling mills, risk assessment, analyze hazards, WRAC.

Steel Rolling Technology Handbook (2nd Revised Edition) Author: NIIR Board of Consultants Engineers ... Interstand Tension Control in Hot Strip Mills ThreeStage AGC for Tandem Hot Strip Mill ... Width Change and Control in Rolling Mills Main Objectives and Methods of Width Change Width Reduction by Rolling Slab Sizing Mills

Modeling, simulation and identification for control of tandem cold metal rolling . ... such as mill thickness input, strip input tension on stand 1 and strip output tension on stand 5; c) interstand time delay is considered for a linear approximation, by using 4 first order lags in cascade and d) a new subspace identification method, called ...

This paper reports a multistand fuzzy tension control system for a roughing rolling mill. Combined with a novel decoupling strategy [3], the proposed scheme makes it possible to separate interstand interactions and realize intelligent tensionfree control of multiple roughing rolling stands. To verify the developed control strategy, a