tension control method for a rolling mill

Fuzzy Multiple Stand Tension Control of a Roughing Rolling Mill

Fuzzy Multiple Stand Tension Control of a Roughing Rolling Mill F. Janabi-Sharifi G. Li∗ Department of Mechanical, Aerospace & Industrial Engineering

Value Paper Authors: SUN Xin, SUN Han-feng Speed cascade ...

4 Speed cascade control system for bar and wire rod mills | ABB Value Paper The reference of tension coefficient is given from rolling pass schedule, generally it is slightly more than 1.

Rolling (metalworking) - Wikipedia

Most steel mills have rolling mill divisions that ... Some technological details about the feedback control of ... Other method of decreasing roll deflection ...

AIST Mass Flow Control for Intercritical Rolling in Hot Mi…

Intercritical hot rolling is a problem for gauge control quality but it is a more serious problem for controlling the mass flow between stands and enabling the mill to continue rolling. The challenges to

AUTOMATIC CONTROL METHOD AND APPARATUS FOR A ROLLING MILL ...

According to the present invention a method and apparatus are provided for controlling the delivery gauge of work strip material issuing from a tandem rolling mill, by providing a substantially constant mass flow condition in relation to adjacent roll stands through desired tension operation, sensing a deviation from said desired tension ...

Designing of Hot Strip Rolling Mill Control System

tension control system adopts the maximum torque method [2]. The basic control process is: when the mandrel ... C.Z. (2009) Hot Rolling Coiler Tension Control ...

Minimum Tension in a Merchant Bar Rolling Mill using Modern ...

The problem of achieving minimum bar tension in a merchant bar rolling mill without direct tension measurement is considered. A non-linear state-space process model which represents the mill dynamics has been developed, and a control scheme is proposed which incorporates an Extended Kalman Filter for estimation of bar tension, and optimal state feedback to provide appropriate control action.

US5546779A - Interstand strip gauge and profile conrol ...

Interstand strip gauge and profile conrol Country Status (1) ... Hot strip mill tension control ... Tension control method for a rolling stock section

Modeling, simulation and identification for control of tandem ...

In general, the rolling mill automation technology deal with the control problem by division into sub problems, where both the adjust thickness and the interstand tension are independent 1, decentralized strategy.

Tension control method for a rolling mill - Hitachi, Ltd.

In the control of the tension of a workpiece which is rolled by a tandem rolling mill, a tension control method for a rolling mill wherein the tension of a workpiece is controlled by a looperless tens

MILL CONTROL SYSTEM AND METHOD FOR CONTROL OF METAL STRIP ROLLING

MILL CONTROL SYSTEM AND METHOD FOR CONTROL OF METAL STRIP ROLLING 8-4-2015 ... "Hot strip mill tension-looper control based on ... for looper tension control in ...

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

Journal of Engineering Volume 2014, ... suboptimal control and synthesis method are applied to tension control ... Tandem Cold Metal Rolling Mill Control Using ...

Looper and tension control in hot rolling mills: A survey ...

Request PDF on ResearchGate | Looper and tension control in hot rolling mills: A survey | Looper and tension control is important in hot strip mills because they affect the strip quality as well ...

Interstand tension control method and apparatus for tandem ...

In a tandem rolling mill consisting of at least a first rolling stand and a second rolling stand, the interstand tension is controlled by the steps of detecting the rolling force b.10 and rolling

Tension Measuring Method and the Effect of Tension Control on ...

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.

US8261590B2 - Roll position setting method of Sendzimir mill ...

Roll position setting method of sendzimir mill ... Shape control in a strip rolling mill of cluster type ... Control method and control system of tension in the ...

Looper and tension control in hot rolling mills: A survey ...

Looper and tension control in hot rolling ... M. KonishiAdaptive and robust control method with estimation of rolling ... M.J. ChapmanHot strip mill tension 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. Following page has links to the webinar ...

Basics of Web Tension Control Summary - TAPPI

Basics of Web Tension Control Summary Presenter: Darrell Whiteside, Sales Channel Manager – Tension Control Maxcess International This presentation is intended to take the mystery out of web tension control.

The Hot Rolling Process - California Steel Industries

The Hot Rolling Process ... small 2-hi rolling mill called a scalebreaker reduces the slab's thickness by ... fragile as it is rolled and tension between the ...

Dynamics and Variance Control of Hot Mill Loopers

Dynamics and Variance Control of Hot Mill ... Variance control, Hot strip mill, Hot rolling ... and the tension control loop, which sets the looper torque required to ...

Chapter 3 - Rolling of metals

•Rolling-mill control ... Cold rolling •The cold-rolling of metals has ... the final product but also provide back tension and front tension to the strip.

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

tension using feedback control system. Mill spring is a defect in which the rolled sheet is thicker than the required thickness because, the rolls get deflected by high rolling forces.

Designing of Hot Strip Rolling Mill Control System -

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.

Control of Strip Tension in a Rolling Mill Based on Loopers ...

Control of Strip Tension in a Rolling Mill ... Pittner, J. and Simaan, M. (2010). A control method for improvement in the tandem hot metal strip rolling process ...