how to control eccentricity problem in hot rolling mill

CorrosionpediaWhat is Hot Rolling Definition from

CorrosionpediaWhat is Hot Rolling Definition from

Nov 26 2018 · Hot rolling breaks the grain structures and destroys the boundaries giving rise to the formation of new structures with strong boundaries having uniform grain structures. Starting materials such as blooms or slabs at an elevated temperature flow from the continuous casting process directly into the rolling mills.

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The Complete Technology Book on Hot Rolling of Steel

The Complete Technology Book on Hot Rolling of Steel

Roll Eccentricity Control Methods The Instrumentation and Computer Control of Hot Mills Introduction Pyrometers Thickness Gaging Monitoring the Profile of Hot-rolled Strip Measuring the Flatness of Hot-rolled Strip The Complete Technology Book on Hot Rolling of Steel

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Modeling and Control of Plate Mill Processes Pedersen

Modeling and Control of Plate Mill Processes Pedersen

The reheat furnace and the rolling mill can be considered two of the main processes in a plate mill. The reheat furnace is used for heating steel blocks which is the raw material for the rolling mill and the rolling mill is used for turning the steel block to a plate by making it wider thinner and longer.

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Solutions for cold rolling mills Nonlinear simulation of

Solutions for cold rolling mills Nonlinear simulation of

Solutions for cold rolling mills Nonlinear simulation of cold rolling processes The rolling of flat products is a complex and challenging process. With the simulation tool for cold rolling mills the complex rolling process can be precisely simulated also for various production scenarios. It helps to quickly identify quality

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 Strip Thickness Control of Cold Rolling Mill with

Strip Thickness Control of Cold Rolling Mill with

In rolling mill the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls the exit thickness deviates periodically. In this paper we design PI controller in outer loop for the strip exit thickness while PD controller is

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Roll Eccentricity MillsVriendenkring RZ Tienen

Roll Eccentricity MillsVriendenkring RZ Tienen

Hot rolling mill roll eccentricity. Control system for tandem cold mills with roll eccentricity control system for tandem cold mills with roll eccentricity seung-soo kim in the cold-rolling mill process the major sources of output thickness variation are the entry-thickness variation ca

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Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

accuracy in thickness control in metal rolling area. If the required accuracy of hot rolling mills can be achieved then in some cases cold rolling is not even required which can result in a radical decrease of production costs. The schematic structure of a typical aluminum hot reversing rolling mill

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Strip Thickness Control of Cold Rolling Mill with Roll

Strip Thickness Control of Cold Rolling Mill with Roll

Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using constraints can be a tedious and challenging problem in many control applications 2 . the high precision of strip thickness various types of Automatic Gauge Control (AGC) methods have been developed for hot or cold mill processes. The Brit-ish

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hot rolling mill roll eccentricityPochiraju Industries Ltd

hot rolling mill roll eccentricityPochiraju Industries Ltd

Automation and Control in Iron and Steel Industrieseolss. thickness and flatness of strip in hot and cold rolling mills. Nearly two-thirds of the total weight of rolled products consists of flat and only one- .. roll eccentricity control the modeling of hydrodynamics and chemical processes in a newly

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Unwind/rewind eccentricity control for rolling mills

Unwind/rewind eccentricity control for rolling mills

Mar 06 1990 · It has been discovered that variations in the thickness of metal strip entering and/or leaving a rolling mill resulting from cyclic conditions associated with coils of the strip that can be substantially reduced if not eliminated all together by direct application of the eccentricity control algorithm disclosed in U.S. Pat. Nos. 4 222 254

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Active compensation of roll eccentricity in rolling mills

Active compensation of roll eccentricity in rolling mills

Abstract This paper is concerned with the active compensation of the roll eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons like e.g. inexact roll grinding or nonuniform thermal expansion of the rolls.

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hot rolling mill roll eccentricityPochiraju Industries Ltd

hot rolling mill roll eccentricityPochiraju Industries Ltd

Automation and Control in Iron and Steel Industrieseolss. thickness and flatness of strip in hot and cold rolling mills. Nearly two-thirds of the total weight of rolled products consists of flat and only one- .. roll eccentricity control the modeling of hydrodynamics and chemical processes in a newly

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CiteSeerX — ROLL ECCENTRICITY CONTROL WITH THE FORCE

CiteSeerX — ROLL ECCENTRICITY CONTROL WITH THE FORCE

CiteSeerXDocument Details (Isaac Councill Lee Giles Pradeep Teregowda) The Force Feed Forward (FFF) System is the only hot strip mill AGC system in the world today which does not incorporate the BISRA principle for gage control. Instead using a revolutionary control algorithm FFF has proven in five installations in North and South America that steelmakers need not replace their

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Unwind/rewind eccentricity control for rolling mills

Unwind/rewind eccentricity control for rolling mills

Mar 06 1990 · It has been discovered that variations in the thickness of metal strip entering and/or leaving a rolling mill resulting from cyclic conditions associated with coils of the strip that can be substantially reduced if not eliminated all together by direct application of the eccentricity control algorithm disclosed in U.S. Pat. Nos. 4 222 254

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Cold Rolling Mills Solutions Nidec Industrial Solutions

Cold Rolling Mills Solutions Nidec Industrial Solutions

Nidec Industrial Solutions Packages real time automation and process control systems to ensure consistent quality. For all types of cold rolling mills from single stand up to a tandem with pickilng line Nidec Industrial Solutions has developed an electrical and automation solution for your needs.

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Mino Automation Company

Mino Automation Company

MINO Automation together with MINO Process Control has developed the technological architecture AVANTI™ TCS which provides automatic flatness control and thickness control for ferrous and non-ferrous rolling mills. The system is designed to be integrated or act as stand-alone package for new revamped and upgraded rolling mills.

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Active compensation of roll eccentricity in rolling mills

Active compensation of roll eccentricity in rolling mills

This paper is concerned with the active compensation of the roll-eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be

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Advanced Process and Quality Control in Hot Rolling Mills

Advanced Process and Quality Control in Hot Rolling Mills

3.1 Key Feature of Process Control Detection of Periodic Defects Rolls and rollers are the most heavily used parts of a rolling mill. Due to wear from contacting hot material with great force their lifetime is limited. Although rolls are refurbished in the roll shop regularly they occasionally crack before the end of the usual production cycle.

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Improvement of thickness tolerances in aluminium cold

Improvement of thickness tolerances in aluminium cold

After the successful simulation study the control concepts were implemented on the two-stand cold rolling mill. In observation mode the functions for eccentricity and hardness compensation could be monitored and preoptimized in parallel to normal operation with no effect on the current operation of the mill.

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hot rolling mill roll eccentricityHof van Hoeven

hot rolling mill roll eccentricityHof van Hoeven

ROLL ECCENTRICITY CONTROL WITH THE FORCE FEED ROLL ECCENTRICITY CONTROL WITH THE FORCE FEED FORWARD AGC SYSTEM Francis Wagner Manager Rolling Mill Automation Hatch Associates Consultants Inc. Buffalo NY USA ABSTRACT The Force Feed Forward (FFF) System is the only hot strip mill AGC system in the world today which does not incorporate the BISRA principle for gage control.

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Technological Milestones ‹ Danieli

Technological Milestones ‹ Danieli

The world s first 4-high Continuous Hot Strip Steel Rolling Mill which made it possible for width and gauge ratios to be increased from 250 1 to 500 1 up to 1000 1 1 Mtpy rolling mill for section and rails in-line heat treated 100-m-long rails for high-speed trains. 2013 DEC DED Danieli eccentricity control and detection for drawn

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Upgrading of Hot Finishing Mill to 4-Stands and

Upgrading of Hot Finishing Mill to 4-Stands and

an overview of the hot finisher mill after the upgrade and describes the new control technology and hot rolling pro-cess control system that were introduced. 2. GENERAL DESCRIPTION The hot rolling mill of the Fukui Works went into service in May 1983 as a world-class facility equipped with large rolling stands capable of producing wide

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Active compensation of roll eccentricity in rolling mills

Active compensation of roll eccentricity in rolling mills

Abstract This paper is concerned with the active compensation of the roll-eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons e.g. inexact roll grinding or nonuniform thermal expansion of

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CorrosionpediaWhat is Hot Rolling Definition from

CorrosionpediaWhat is Hot Rolling Definition from

Nov 26 2018 · Hot rolling breaks the grain structures and destroys the boundaries giving rise to the formation of new structures with strong boundaries having uniform grain structures. Starting materials such as blooms or slabs at an elevated temperature flow from the continuous casting process directly into the rolling mills.

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(PDF) Strip Thickness Control of Cold Rolling Mill with

(PDF) Strip Thickness Control of Cold Rolling Mill with

Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network Control) system of a hot rolling mill is analyzed and different methods are

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1328 The Open Automation and Control Systems Journal

1328 The Open Automation and Control Systems Journal

Abstract This paper proposes the eccentric problem in the coiling process of cold rolling mills. The wavelets multi-resolution control method is designed A wavelets multi-resolution controller is introduced in the control cycle of coiling tension control whose purpose is to acquire the element caused by periodically change of the coiling

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Technological Milestones ‹ Danieli

Technological Milestones ‹ Danieli

The world s first 4-high Continuous Hot Strip Steel Rolling Mill which made it possible for width and gauge ratios to be increased from 250 1 to 500 1 up to 1000 1 1 Mtpy rolling mill for section and rails in-line heat treated 100-m-long rails for high-speed trains. 2013 DEC DED Danieli eccentricity control and detection for drawn

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60 YEARS OF ROLLING MILL TECHNOLOGY By Ford B. Cauffiel

60 YEARS OF ROLLING MILL TECHNOLOGY By Ford B. Cauffiel

Rolling mills are not a standard machine tool nor are they built for stock. They are designed and built-to-order to specifically accomplish an end product or process. At one point during the industrial revolution in America the United States led the world in hot and cold rolling plate mills slabbing mills and blooming mills.

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Roll Eccentricity Control for Strip Rolling Mills

Roll Eccentricity Control for Strip Rolling Mills

An in-depth review of the roll eccentricity control design problem is provided which encompasses a number of recent novel design contributions and includes experimental results from two separate steel tandem cold rolling mill installations.

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A BASIC UNDERSTANDING OF THE MECHANICS OF

A BASIC UNDERSTANDING OF THE MECHANICS OF

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago the results were never published but of high interestalso maybe later. K. H. Schröder July 2003 K. H. Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

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Upgrading of Hot Finishing Mill to 4Stands and

Upgrading of Hot Finishing Mill to 4Stands and

how to control eccentricity problem in hot rolling mill. how to control eccentricity problem in hot rolling mill how to control eccentricity problem in hot rolling mill Roll Eccentricity Control for Strip Rolling An indepth review of the roll eccentricity control design problem is provided which encompasses a number of recent novel design contributions and includes experimental results from

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Active compensation of roll eccentricity in rolling mills

Active compensation of roll eccentricity in rolling mills

Abstract This paper is concerned with the active compensation of the roll eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons like e.g. inexact roll grinding or nonuniform thermal expansion of the rolls.

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Cold Rolling Mills Solutions Nidec Industrial Solutions

Cold Rolling Mills Solutions Nidec Industrial Solutions

Nidec Industrial Solutions Packages real time automation and process control systems to ensure consistent quality. For all types of cold rolling mills from single stand up to a tandem with pickilng line Nidec Industrial Solutions has developed an electrical and automation solution for your needs.

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Method of measuring and compensating roll eccentricity of

Method of measuring and compensating roll eccentricity of

Jan 26 1993 · A rolled plate with uniform thickness and flatness from a rolling mill is a goal constantly pursued by many steel plate manufacturers. Among the various factors which affect the thickness and flatness of the rolling plate eccentricity of the backup roll is most decisive.

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Advances in Mechanical Engineering 2018 Vol. 10(11) 1–10

Advances in Mechanical Engineering 2018 Vol. 10(11) 1–10

controller design of looper control system for hot strip mill process Yufeng Gao1 2 Xu Yang1 and Yuri AW Shardt3 Abstract This article considers a robust decoupling controller design for a multivariate control system with parameter uncertain-ties for the hot rolling mill process.

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 Strip Thickness Control of Cold Rolling Mill with

Strip Thickness Control of Cold Rolling Mill with

In rolling mill the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls the exit thickness deviates periodically. In this paper we design PI controller in outer loop for the strip exit thickness while PD controller is

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