The ITC system consists of separate control modes for initial mill threading and steady-state rolling. The threading control mode is configured specifically to establish interstand tension during initial threading. The steady-state or run control mode is configured to reduce interactions between interstand tension and strip thickness.

The rolling process in a finishing mill inherently has interactions between for example thickness control loops and mass flow control loops. Tandem Cold Metal Rolling Mill Control An advantage of this method is that it provides good control of thickness and tension (and thus mass flow ) throughout the entire mill, which enhances the stability ...

P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement – 98 – Another way to determine the thermal expansion of the work roll is the modelling of the heat transfer between the ...

In available continuous cold rolling mill with inactivated roller in the ultimate mill bed, there are problem of interference between the entrance side tension control and exit side plate thickness control of the ultimate mill bed and problem of response lagging of exit side plate thickness control. For sake of solving the problems, the present invention has altered plate thickness …

If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the utilization can be improved by 1 %, the available rolling hours is 365 x 24 x 0.81 = 7096.6, creating 87.6 extra rolling hours. At 114.16 tons/hour that is an additional 10,000 tons can be rolled.

Rolling Mill Tutorial. Before continuing, make sure you have read Chapter 5. System Description. Another control problem (besides the continuous caster) arising in the steel industry is the control of the exit steel thickness in a rolling mill. The diagram below shows the layout of a rolling mill, with thick steel going in one side, and thin ...

Cold rolling mill control systems; Cold rolling mill control systems. By using meticulous auto-control and abundant monitoring and recovery functions, these systems achieve the world's highest quality level as they control steel thickness, tension, and shape through the adoption of advanced control theory while also promoting stable operations. ...

TelePro/SSE mill automation systems are designed, developed, commissioned and supported by engineers with extensive process control experience on all types of rolling mills. We have spent many years working directly with plant technical and operating personnel to understand the functional requirements for these systems.

In the rolling process, the job is drawn through a set of rolls due to interface friction, and the compressive forces reduce the thickness of the workpiece or change its cross-sectional area.. The types of rolls used in rolling mills are depended upon the shape, size, and the gap between the rolls and their contour. Because of workability and limitations in …

A Hille-100 rolling mill with rolls of 225 mm diameter and 254 mm length, driven by a variable speed DC motor of 75 horse power, was used. The maximum rolling force, torque and speed …

The rolling process in a finishing mill inherently has interactions between for example thickness control loops and mass flow control loops. Tandem Cold Metal Rolling Mill Control An …

During the hot rolling mill process, many factors are taken into account to ensure the final rolled product meets the desired thickness tolerances and ultimate quality requirements. With the goal of reducing material consumption and manufacturing costs, it's imperative for manufacturers to achieve minimum and nominal thickness tolerances by ...

Summary. Hot strip rolling mills are characterised by a process which has many interactions, is distributed with dominant transport delays and has a lack of measurements due to the severe environment. There is ever increasing market demand for better product quality of the steel strip hence the requirement for higher performance controllers.

Available for all material and rolling mill types: • Break down mills • Multi-roll mills • Two-stand mills • DCR mills • Tandem mills • Temper mills • Foil mills ... equipment and control strategy solution fit to - gether. Comprehensive know-how cold …

This paper addresses the problem of the product quality improvement in hot rolling mills. The simplest scheme for modeling the rolling process considers the reduction of …

A method of operating an automatic platethickness control rolling mill system to compensate for inherent rolling mill effects that are variable with speed, comprising the steps of: operating the rolling mill for the reduction of plate material for a first predetermined period of operation; measuring the platethickness going into the rolling ...

Models. Reviews (1) Discussions (2) Sheet Rolling Mill processes involve progressive thickness reduction of continuous sheet metal in multiple stages. Some of the control variables of interest are exit thickness, throughput and the tension in the sheet as it passes from one stage to the other. Following page has links to the webinar series that ...

FirstOpNet DCS system for Cold Rolling Mills with adaptive control. The DCS control system designed by First Control is based on modern control technology with self-tuning control to achieve maximal production performance. Experience from several installations shows that the self-tuning regulator reduces the thickness deviations by 50-75% ...

control system rolling mill mill control rolling mill Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Application number CA114674A Other versions CA114674S (en Inventor

Advanced Process and Quality Control in Hot Rolling Mills Using Eddy Current Inspection Autor: SVEN KLING Speaker: Markus WITTE PRÜFTECHNIK NDT GmbH Ismaning, Germany +49 89 99 616 152 [email protected] Abstract Eddy current testing is a common method for the surface inspection of semi-finished products.

The high-precision rolling mill speed control system must have higher precision for given regulated power supply. Therefore, when designing the system control scheme and formulating the control circuit, it is necessary to pay great attention to the design and selection of the regulated power supply. The stabilized power supply consisting of ...

a rolling mill has a gagemeter control on substantially every mill stand. an x-ray gage deviation signal is fed through an isolator unit which provides a wide dead-band within the gage tolerance for a particular order. if the gage deviation signal exceeds the width of the dead-band the deviation signal is integrated in a high gain integrator and used to change the set point of the …

Thermo mechanical controlled processing (TMCP) is a technique designed to improve the mechanical properties of materials by controlling the hot-deformation process in a rolling mill. This was originally designed to produce the required external shape of the product. Controlled rolling, controlled-cooling and direct-quenching are typical ...

Abstract: A rolling mill having hydraulic cylinders in each housing to adjust the roll gap is provided with a control system whereby a workpiece is kept on a central path through the mill and is prevented from wandering from this path towards one of the mill housings. The system includes a pair of circuits and a connector between the circuits ...

Metal Rolling Mill Control Using Practical Advanced Methods Springer-Verlag, London 2011 . Project Summary . The rolling of hot metal strip in a tandem finishing mill is an important industrial manufacturing process that has considerable implications related to the health of the US economy. However, at present the US competitive position in the ...

Rolling mill control: architecture and applications. Abstract: Considers some of the distributed aspects of the control of modern metal rolling mills. Such mills have a range of ever more ambitious targets, for example product quality, yield, metallurgy and throughput. These aims are supported by high levels of mill sophistication, in terms of ...

Rolling Mill (or roll stand or steel rolling mill) is a machine in which all the equipment for metal rolling like rolls, bearings, housing, motors, frame, power system, etc are set up to perform a metal rolling operation. In steel rolling mills, workpiece having greater thickness is fed through the rollers and the final workpiece with reduced ...

Firstly this paper proposes a lumped-parameter hot-rolling mill model. The rolling mill examined is reversible and equipped with an independent speed control system for each work roll (two single ...

In this paper a fully neural network-based structure have been proposed to control speeds of rolling stands of a steel rolling mill. The structure has property of controlling the motors speed such ...