hot rolling mill roll eccentricity

Strip Thickness Control of Cold Rolling Mill with Roll 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 Rolling Mill Technology Free Pdf - tivlabs rolling mill technology free pdf - thelink rolling mill design sample questions tenshion Tolerance Handbook Free download as PDF File the type of rolling mill A Contribution to Rolling Mill Technology _ Roll

Non

non-circular shape was ground on the rolls The empirical research took place at a hot strip mill As a result the 3D ground non-circular geometry of the backup rolls considerably reduced the rolling force variation Key words: non-circular grinding rolling mill backup roll rolling force variation 1 INTRODUCTION

Schematic structure of a hot rolling mill The thickness of the rolled material is measured by an X-Ray thickness gauge in the last pass This measurement is possible within several meters distance from the roll gap therefore considerable dead time has to be taken into account in thickness control Measuring Systems in Hot Strip Mills

hot rolling mill roll eccentricity Upgrading of Hot Finishing Mill to Stands and hot-rolled coils thereby effecting pass cutting in the cold-rolling process 3) To realize a high-productivity hot-rolling mill by replac-ing the computer control system with one of the latest design that achieved a significant degree of automa-tion Get price

Roll eccentricity is a periodic disturbance caused by a structure of back up rolls in rolling mills and it affects product thickness accuracy It cannot be measured directly by sensors so it should be identified by measured thickness or measured roll force When there is a large difference of diameters between top and bottom back up roll the performance of roll eccentricity control using

A new rolling mill with higher ability to control strip crown-shape than conventional 4Hi mills was developed in 1974 which was called HC mill 57) As this rolling mill with 6Hi structure could made work-rolls to be small the control characteristic of deformation shape of rolls was improved by shifting a middle roll in the width direction


how to control eccentricity problem in hot rolling mill

how to control eccentricity problem in hot rolling mill Rolling Mill Tutorial Before continuing make sure you have read Chapter 5 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 steel coming out the other

Rolls in rolling mills are never completely round but have eccentricity which can be caused by: • grinding inaccuracy • non-uniform thermal expansion • asymmetrical adjustment of bearing rolls shell via drive keys Each eccentricity consists of a base frequency which is the rotary frequency of the roll and several harmonic frequencies

Roll eccentricity elimination control PC1: Rougher master table master PC2: Rougher sub-machine control master PC3: Machines around rougher mill control master Automatic gauge control PC4: Slab cooling temperature control Figure 2 Configuration of computer control system for hot strip rolling mill Roll thermal crown calculation Finisher set-up

The roll eccentricity in a rolling mill may define the limit of achievable thickness tolerances and thus is subject of interest for the automation equipment in hot rolling mills as well as in cold rolling mills Today's demand on thickness tolerances less than 0 8% require efficient methods for roll eccentricity identification and compensation

5/6/1975A control system and method are disclosed to operate with at least one roll stand of a rolling mill to determine the magnitude and phase relationship of the eccentricity of each back-up roll of a four high roll stand to monitor the rotation of the back-up rolls during the rolling process and for each back up roll to correct the roll vertical

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

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

9th INTERNATIONAL ROLLING MILL ACADEMY 5-9 November 2007 - Glasgow Scotland The lectures will be given by leading international experts in hot and cold mill control systems As well as providing an in-depth understanding of the theory they will also explain the practical issues of implementing rolling mill control systems

hot rolling mill roll eccentricity

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

A Foil Rolling Mill rolls in subsequent long passes(due to the relative thin material) coiled strip (coiled on steel spool) from a thickness of up to 0 6 mm (coming from Cold rolling Mill) down to 2 x 5 m the mill is designed in order to roll in closed gap The Mechanics of the Rolling Process

hot rolling mill roll eccentricity Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network Waleed I Hameed Khearia A Mohamad Department of Electrical Engineering University of Basrah Basrah Iraq been developed for hot or cold mill processes

The Complete Technology Book on Hot Rolling of The Complete Technology Book on Hot Rolling of Steel Rolling mills perform the function to reform the metal pieces such as billet and Desulfurization Technology Tolerance Handbook Free download as PDF File the type of rolling mill A Contribution to Rolling Mill Technology _ Roll

CiteSeerX - Document 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

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

The primary function of the conventional hot strip mill (HSM) is to reheat the semi-finished steel slabs (rolled or continuously cast) to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling up the lengthened steel sheet for its easy handling and

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

how to control eccentricity problem in hot rolling mill 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

hot rolling mill roll eccentricity - pochirajucoin Neural network for identification of roll eccentricity in rolling mills Feb 16 1999 The roll eccentricity in a rolling mill may define the limit of thus is subject of interest for the automation equipment in hot rolling

Hot Rolling Mill Roll Eccentricity We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment milling equipment mineral processing equipment and building materials equipment

forged steel balls for ball mill as ball mill media

xl for conveyor calculations

best sieve size for rock hounding

used stone processing marble plant

ore nickel sulfide

ball mill dimentioon for t

who sells calcite for water bolivia

1 cubic metre rcc m 20 grade

copper rod mill suppliers and copper rod mill manufacturers xbm

jaw crusher bloomington

quarrying in the yorkshire dales

gold and silver ore milling and processing equipment in south africa

sbm milling machine

dpc200 hammer crusher

list of upcoming sponge iron projects in karnataka

mini concrete crusher rental

portable crushing and grinding mill for sale primarie delle

internal wall of ball mill drum

usa mobile crusher and usa stone rock crusher

dolomite crusher plants

aggregate crusher machines for sale in uk

electric posho mills price

drilling equipment for open pit mining

coal mill roller replacement rate

gold processing equipment in usa

machine ice softy

sand machine for sale in nairobi

method statement for crushing concrete

Have a project in mind?
Contact me directly
[email protected]