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Hot Rolling Mill Hydraulic Gap Control HGC thickness

Hot Rolling Mill Hydraulic Gap Control Hgc Thickness

P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement 94 load between passes, and for accurate positioning during rolling two hydraulic cylinders are installed. The position of the cylinders is controlled by servo valves

PDF Hot Rolling Mill Hydraulic Gap Control HGC

Pdf Hot Rolling Mill Hydraulic Gap Control Hgc

Jun 06, 2015 In this article the AGC Automated Gauge Control system, of a hot rolling mill is analyzed and different methods are described to improve its performance. The mill stretch compensation and other disturbances during the rolling process are compensated and a rolling speed dependent, adaptive PI controller is developed to accomplish fine thickness control. The improved system has

Modeling and Simulation of Electrichydraulic Control

Modeling And Simulation Of Electrichydraulic Control

Sep 24, 2008 Hydraulic bending roll system has become one of key equipments to control the exit strip shape in strip rolling mills. The hydraulic bending roll system of a hot rolling mill was researched and analyzed, and its mathematics models were founded in whole based on the action principle of some representative hydraulic components. At last, the hydraulic bending roll system was simulated with

Looper and tension control in hot rolling mills A survey

Looper And Tension Control In Hot Rolling Mills A Survey

Jul 01, 2007 The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.820 mm. Fig. 1 shows a typical layout of a hot strip mill. Slabs are heated up to around 1200 C in reheating furnaces and then rolled on two reversing roughing mills which reduce the thickness of bars to ...

Butech Bliss Coil Processing MetalCutToLength Line

Butech Bliss Coil Processing Metalcuttolength Line

The stretch leveling cut-to-length line, dubbed, The Memeory Eraser recently underwent some exciting upgrades. As a result, the four year old Butech Bliss cut-to-length, originally rated to process .750 x 74 x 70,000 lb. hot-rolled, cold-rolled and coated carbon steels, is

Rolling Mills Metal Rolling Mill Machine Rolling Mill

Rolling Mills Metal Rolling Mill Machine Rolling Mill

Two-High Generally, a 2-HI mill is used for hot or cold breakdown and finishing of bar, sheet or strip. A wide range of sizes with separating force capacities from 10,000 lbs. 4.53 MT to over 3,000,000 lbs. 1360 MT are available. Three-High A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High A 4-HI mill may be used for finish rolling of thin gauge ...

Dynamic matrix predictive control for a hydraulic looper

Dynamic Matrix Predictive Control For A Hydraulic Looper

Jul 09, 2017 Identification and optimization for hydraulic roll gap control in strip rolling mill J. Journal of Central South University, 2015, 226 21832191. Article Google Scholar 13 CHEN Chun-ta, RENN J C, YAN Zong-yuan. Experimental identification of inertial and friction parameters for electro-hydraulic motion simulators J.

ClosedLoop System in Hydraulic Automatic

Closedloop System In Hydraulic Automatic

Oct 18, 2019 observer for the hydraulic servo-position system in a cold-strip rolling mill with uncertain parameters, immeasurable states and unknown external load forces. Sun et al. 12 introduced key technical features and new technology of the improved cold strip mill process control system system

Vibration and maintenance of hydraulic system of vibratory

Vibration And Maintenance Of Hydraulic System Of Vibratory

Vibration and maintenance of hydraulic system of vibratory roller Jul 22, 2019 The high-frequency strong vibration force when the vibratory roller is working is an important factor to achieve high productivity, but it is also the main reason that affects the structure, reliability and machine failure rate of

Rolling Mills 6 Different Types of Rolling Mills Images

Rolling Mills 6 Different Types Of Rolling Mills Images

Sep 30, 2020 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 in 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 equipment, rolling is done in the ...

US9016100B2 Fully hydraulic edger for plate mills

Us9016100b2 Fully Hydraulic Edger For Plate Mills

A fully hydraulic edging system suitable for use in wide plate mills is disclosed. The need for electro-mechanical screws to effect large movements of the side rollers is avoided by employing a pull-back hydraulic cylinder for this purpose. The main hydraulic cylinders are switched to a non-operational mode during large movements thus avoiding the need for large volumes of hydraulic fluid to ...

EnergyEfficient Cooling and Hydraulic Descaling Systems

Energyefficient Cooling And Hydraulic Descaling Systems

Nov 11, 2020 The cooling system for the rolls of thick-wall rolling mills was optimized and modified for Voestalpine Stahl GmbH Austria, U.S. Steel Kosice, Ltd. Slovakia, and HYUNDAI STEEL Korea. A collector prototype for hydraulic descaling is currently tested on a P1500 Steckel rolling mill

Setting Automated Roll Axial Shifting Control System of

Setting Automated Roll Axial Shifting Control System Of

Jan 01, 2017 The paper provides the CVC plus system designed for control of cross-section and sheet flatness of the 5,000 mm plate mill stand at OJSC Magnitogorsk Iron and Steel Works. It considers principles of roll axial shifting and spindle horizontal balancing. It describes designs of correlated systems of automated roll and spindle position control.

Cleaner Fluid Boosts Steel Mill Uptime Hydraulics

Cleaner Fluid Boosts Steel Mill Uptime Hydraulics

The hydraulic system of the hot roll plate mill operated at a pressure 4,200 psi, and the working temperature of the fluid hovered around 130 F. An off-line kidney loop filter was provided for the reservoir, and filters were also located at the pump discharge for servovalve pilot circuits and for

Modernization of the hot plate rolling mill thickness

Modernization Of The Hot Plate Rolling Mill Thickness

Oct 27, 2017 The paper presents a methodology to control the hydraulic gap device of a thick plate rolling mill. The method is based on modeling the next metal pass of through the rolls and on the preliminary calculation of the hydraulic pressing device movements values during the rolling process. The results of this method are compared with an indirect method of thickness measuring. Based on

The Hot Rolling Process California Steel

The Hot Rolling Process California Steel

The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, and finally coiling up the lengthened steel sheet for transport to the next process.

Coupling vibration model for hot rolling mills and its

Coupling Vibration Model For Hot Rolling Mills And Its

In this paper, we propose an effective mechanical-electrical-hydraulic-interfacial coupling vibration model for hot rolling mills and obtain a practical measure to relieve mill vibration. First, an experiment related to mill modulus control gain in automatic gauge control AGC is carried out during manufacturing. Rolling mill vibration is observed to gradually be enhanced with increasing mill ...

Products Flat Hot Strip Mills Modern rolling mills

Products Flat Hot Strip Mills Modern Rolling Mills

The Hot Strip Mill represents the most productive solution for flat rolled products. It provides the highest level of productivity together with a large product mix and outstanding quality. Yearly productivity of Hot Strip Mills can vary from 2 to 6 Mtpy, depending on the configuration that is selected.

Coupled Vibration Behavior of Hot Rolling Mill Rolls under

Coupled Vibration Behavior Of Hot Rolling Mill Rolls Under

A coupled vibration model of hot rolling mill rolls under multiple nonlinear effects is established by considering the nonlinear spring force produced by the hydraulic cylinder, the nonlinear friction between the work rolls, the dynamic variation of rolling force, and the effect of external excitation as well as according to the structural constraints of a four-high hot rolling mill in the ...

Rolling of steel in Hot Strip Mill IspatGuru

Rolling Of Steel In Hot Strip Mill Ispatguru

Dec 03, 2015 The position of each roll is fed back to the finishing mills sophisticated automation system which, along with information from the load cells that monitor rolling force and from the X-ray gauge measuring final strip thickness, work to smoothly adjust the roll gaps and speeds to maintain stable rolling of strip to the necessary thickness in ...

Design and Analysis of Hydraulic Roller press frame

Design And Analysis Of Hydraulic Roller Press Frame

mill competently or in partial. Roller press is characterized by low power consumption and lower noise for reforming old factories Fig.2 Hydraulic Roller Press at site Construction of Hydraulic Roller Press The hydraulic roller press consists of a frame assembly in which two rotating rollers are mounted with roller bearings and bearing housings.

Solving Hydraulic System Overheating Problems

Solving Hydraulic System Overheating Problems

How hot is too hot Hydraulic fluid temperatures above 180 F 82 C damage most seal compounds and accelerate degradation of the oil. While the operation of any hydraulic system at temperatures above 180 F should be avoided, fluid temperature is too high when viscosity falls below the optimum value for the hydraulic systems components.

Pulp and Paper Industry Lubrication Guide

Pulp And Paper Industry Lubrication Guide

Pulp and Paper Industry Lubrication Guide. Many paper mills have lubrication and hydraulic systems that, it would seem, have been constructed over time by several committees with no common goals or objectives. Needless to say, these systems are far from state-of-the-art in design and construction. There are many reasons that systems can fall ...

Types of Lubricants Used in Roll Forming Equipment

Types Of Lubricants Used In Roll Forming Equipment

Hydraulic oil is used in hydraulic presses or clamping systems. Anti-wear additives make these non-detergent oils the best choice for hydraulic systems and equipment. Slick 50 can be applied to the roll space portion of the mill spindles. It is a synthetic oil-based treatment that protects from friction and heat.

Roll Bending an overview ScienceDirect Topics

Roll Bending An Overview Sciencedirect Topics

John G. Lenard, in Primer on Flat Rolling Second Edition, 2014 2.10 Modern Steckel Mills. The development of modern Steckel mills has included many items of improved design including more effective descaling, hydraulic automatic gauge control HAGC, work-roll bending control, larger coiling furnaces and coiling drums, quick work-roll change, retractable furnace tables, higher speed rolling ...

Hot Rolling Nippon Yakin

Hot Rolling Nippon Yakin

Nippon Yakins roughing mill handles plate rolling as well as rough bar rolling for strips with sophisticated hydraulic screw down system. The original physical model of rolling of the process computer enables optimum rolling pass schedule calculations for each product. Primary Specifications. Roughing Mill. four-high reverse mill.

Modeling and Simulation of Electrichydraulic Control

Modeling And Simulation Of Electrichydraulic Control

AbstractHydraulic bending roll system has become one of key equipments to control the exit strip shape in strip rolling mills. The hydraulic bending roll system of a hot rolling mill was researched and analyzed, and its mathematics models were founded in whole based on the action principle of some representative hydraulic components.

Drive system hydraulic cylinder amp clamping device

Drive System Hydraulic Cylinder Amp Clamping Device

Drive system Ratio-Drive , industrial hydraulic cylinder, clamping device At 12 ms, the redhot steel rods are transported out of the finishing roll block onto the cooling bed of the rolling mill of Georgsmarienh tte GMH.

Modelling of the hydraulic work roll bending control

Modelling Of The Hydraulic Work Roll Bending Control

For modern hot rolling mills the typical hydraulic circuit was designed to control the roll bending force during rolling process. The most common operating modes of the roll bending system were studied rolling, start and stop. The bending roll control system was designed in the form of functional blocks, connecting the actuators, sensors and sided subsystems of the rolling control.

A BASIC UNDERSTANDING OF THE MECHANICS OF

A Basic Understanding Of The Mechanics Of

cooling system. Problems of this kind can never really be calculated but they have a detrimental effect on all rolling schedules including stresses in the roll. As regards abnormal rolling conditions - which are more or less very normal for rolling mills - roll damage often occurs with consequences for the mill and the rolled product.

Basics of Rolling and Rolling Mills IspatGuru

Basics Of Rolling And Rolling Mills Ispatguru

May 30, 2013 Fig 4 Roll configurations in rolling mills. Two-high mill roll configuration This is the most commonly used rolling mill configuration. In this configuration, there are two horizontally mounted rolls. The rolling mill motor drives either both rolls top and bottom or only one roll normally the bottom roll with the top roll rotating due to the friction between the roll and the work piece.

ElectroHydraulic Servo Control System Upgrade for Steel

Electrohydraulic Servo Control System Upgrade For Steel

Basically, hot-rolled means that the steel is heated in the furnace to a cherry-red temperature and then passed through a series of rolling mills to reduce it to the desired size. When cold-rolled steel is wanted, the hot-rolled steel is reduced only part of the way in gauge and then allowed to cool and then finally passed through a series of ...

Steel Mill applications Brant Hydraulics

Steel Mill Applications Brant Hydraulics

BRANT HYDRAULICS has extensive experiences and capabilities on building heavy-duty cylinders for steel mill applications. Steel mills cylinders have been one of our strength over years and our customers are always satisfy with our cylinders. Over the years, our steel mill applications has covered the whole steel making production line. We have experiences in doing ALL the steel mill cylinders ...

Technological packages Danieli

Technological Packages Danieli

Mechanical properties estimator for hot rolled flat products. Q-HEAT. Induction heating system for long and flat products. Q-FLOW . Advanced laminar cooling system for hot strip mills. DQ - DIRECT. Compact cooling system to increase cooling rate, save alloy costs and extend steel grades portfolio. ... Hydraulic oscillator technology for bloom ...

Work Roll change in a Hot Rolling Mill especially in a

Work Roll Change In A Hot Rolling Mill Especially In A

Dec 13, 2013 28. Work roll latches In the closed position, the latches are connecting the Work roll chocks with the CVC-shifting cylinder. In roll change the latches must be opened so that the work rolls WR can be removed from the mill stand. The top and bottom latches are driven by two 2 hydraulic