tension control method for a rolling mill

FUZZY TENSION CONTROL OF THE WIRE ROD ROUGHING MILL

tension. In general, rolling with low tension in roughing mill is a fundamental condition to ensure the stable rolling quality [2], [3]. This paper proposes the fuzzy control structure for the roughing mill in Slovakia Steel Mills, a.s. Strážske. The given roughing mill consists of six rolling stands (STD), individually driven by motors

Simulating a Multi-Stage Rolling Mill Process, Part 3

Dec 17, 2009· Simulating a Multi-Stage Rolling Mill Process, Part 3: Tension Control. From the series: Simulating a Multi-Stage Rolling Mill Process. Alec Stothert, MathWorks. This webinar is the third in a three-part series that highlights the use of MathWorks products for modeling and control of a multistage rolling mill process. In this webinar, you will

Metal Rolling thelibraryofmanufacturing

In a metal rolling process, rolls, stands, bearings, housing, motors, and other mechanical equipment are all a necessary part of the manufacturing operation. The place where all the equipment for metal rolling manufacture is set up is called a rolling mill. Rolling mills often …

1. Hot rolling and rolling defects: 1.1 Front and back

Reducing the roll gap increases the roll pressure to p3. Gage control in multiple rolling mills is achieved through measurement of strip thickness using x-ray gage and adjusting the strip tension using feedback control system. 1.8 Rolling defects: Mill spring is a defect in which the rolled sheet is thicker than the required thickness because,

Looperless Tension Control in Hot Rolling Process Using SVR

Constant tension control between stands in hot rolling process is essential to enhance the quality of steel. Sensorless tension control is under research by some advanced companies to replace the conventional tension control method because in continuous finishing mill process, it is impossible to install the looper used in conventional control

Modeling and Control of Multi Stage Rolling Mill Process

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.

Tension Control Systems steminbreitbach

Analog Tension Control The MCS-204 is a solid-state control designed for manual or analog input to operate one or two 24 VDC tension brakes.It is designed for use with the MCS-166 power supply. See page 47. n Input 24–28 VDC @ 3 amps n Operates from torque adjust control knob

Control of Strip Tension in a Rolling Mill Based on

hot rolling mills. We thus consider tandem rolling mills equipped with loopers in this paper. Due to their easy setup, PI force controllers are still the most prevalent controllers for the position of looper rolls (Choi et al., 2007b). More advanced control systems use tension meters (Zhao et al., 2008) to measure the current strip tension.

Basics of Web Tension Control Summary tappi

different methods of control be it either speed or torque. Lastly we will explore the different types of tension systems including: manual, open loop and closed loop. We will discuss different components and methods used in each, as well as the advantages and disadvantages. This section is intended to help the audience best select the system best

FUZZY TENSION CONTROL SCHEME FOR ROUGHING AND …

This paper proposes a fuzzy interstand tension control scheme for roughing and intermediate rolling mills to deal with the first problem mentioned above. The proposed scheme detects the changes in the motor current and corrects the motor speed of the upstream stand based on approximate human reasoning to remove speed mismatch.

New Rolling Method R f Reversing Cold Rolling Mill

OUTLINE OF REVERSING COLD ROLLING MILL Outline of reversing cold rolling mill and rolling method As illustrated in Figure 1, a reversing cold rolling mill is structured mainly of a mill proper, a winding machine (pay-off ree l), an entry winding machine (tension reel) and a delivery-winding machine (tension …

The Complete Technology Book on Hot Rolling of Steel

The Complete Technology Book on Hot Rolling of Steel Author: NIIR Board of Consultants & Engineers Format: Paperback automatic gauge control systems, strip tension control system in cold mills, flat rolling practice cold rolling, pack rolling, steelmaking refractories, refining of Passive roll eccentricity control methods

THE MECHANICS OF TENSION CONTROL Converter …

methods for doing this. • If you already have a load cell tension control, it normally has the ability to display actual tension in total pounds across the web. You can also purchase load cells with only a display (no control) if you would like to measure tension within any zone in your machine.

New Rolling Method R f Reversing Cold Rolling Mill

OUTLINE OF REVERSING COLD ROLLING MILL Outline of reversing cold rolling mill and rolling method As illustrated in Figure 1, a reversing cold rolling mill is structured mainly of a mill proper, a winding machine (pay-off ree l), an entry winding machine (tension reel) and a delivery-winding machine (tension …

Tension Measuring Method and the Effect of Tension Control

This slight tension control is called the "Tension Free Control". The main technical problem of such control is to detect the inter-stand tension without touching the strip. The tension measurement method shown in this paper is a method which, uses the motor torque and the rolling force of each stand.

:Journal of the Society of Instrument and Control Engineers · 1976:Yasuo Morooka · Shinya Tanifuji · Takakazu Sakurai · Akiya Yamashita:

Looperless Tension Control in Hot Rolling Process Using SVR

Constant tension control between stands in hot rolling process is essential to enhance the quality of steel. Sensorless tension control is under research by some advanced companies to replace the conventional tension control method because in continuous finishing mill process, it is impossible to install the looper used in conventional control

THE MECHANICS OF TENSION CONTROL Converter …

methods for doing this. • If you already have a load cell tension control, it normally has the ability to display actual tension in total pounds across the web. You can also purchase load cells with only a display (no control) if you would like to measure tension within any zone in your machine.

Robust Tension Control of Strip for 5-Stand Tandem Cold Mills

Tandem cold rolling process is a nonlinear complex system with external and internal uncertainties and significant disturbances. The improvement in the quality of the final output depends on the control strategy of centerline thickness and interstand tension. This paper focuses on interstand tension control problem in 5-stand tandem cold rolling mills.

Fuzzy multiple stand tension control of a roughing rolling

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Fuzzy multiple stand tension control of a roughing rolling mill @article{JanabiSharifi2002FuzzyMS, title={Fuzzy multiple stand tension control of a roughing rolling mill}, author={Farrokh Janabi-Sharifi and Ge-qiang Li}, journal={2002 Annual Meeting of the North …

Simulating a Multi-Stage Rolling Mill Process, Part 3

Dec 17, 2009· Simulating a Multi-Stage Rolling Mill Process, Part 3: Tension Control. From the series: Simulating a Multi-Stage Rolling Mill Process. Alec Stothert, MathWorks. This webinar is the third in a three-part series that highlights the use of MathWorks products for modeling and control of a multistage rolling mill process. In this webinar, you will

Fuzzy multiple stand tension control of a roughing rolling

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Fuzzy multiple stand tension control of a roughing rolling mill @article{JanabiSharifi2002FuzzyMS, title={Fuzzy multiple stand tension control of a roughing rolling mill}, author={Farrokh Janabi-Sharifi and Ge-qiang Li}, journal={2002 Annual Meeting of the North …

US5809817A Optimum strip tension control system for

1. An optimum strip tension control system for a tandem rolling mill having at least a first upstream driven rolling stand and at least a second downstream driven rolling stand defining an interstand distance between adjacent stands and adapted to contain an interstand section of metal strip being rolled, said system comprising means to calculate load ratios of adjacent mill stands as a

Rolling Mill Control Russula

Cascade control uses the reduction concept (R-Factor) to calculate the mill cascade speed reference. This parameter, directly related to rolling fundamentals, simplifies the setup and operator control. During production the loop and tension control automatically adjust the RFactor, ensuring minimum material stress between the stands.

Improvement of Electric and Mechanical System for

Improvement of Electric and Mechanical System for Automated Strip Tension Control at Continuous Wide-Strip Hot-Rolling Mill . HOME ; Improvement of Electric and Mechanical System for Automated Strip Tension Control at Continuous Wide-Strip Hot-Rolling Mill

Designing of Hot Strip Rolling Mill Control System

last finishing mill, the coiler entered the stage of tension control. Strip tensions are mainly provided between mandrel and pinch roll, between pinch roll and finishing mill. In order to make full use of the motor torque, the tension control system adopts the maximum torque method [2]. The basic control process is: when the mandrel

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