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  • Profile and Flatness Set Up System for Rolling Mill

    2021-5-11 · CNP®(Combined Numerical Profile) Mill in actual hot rolling operations. As a result product quality has been successfully improved. This paper introduces the profile and flatness set up system (PFSU) for finishing mill in hot strip mill and reversing finishing mill in

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

    2019-2-4 · Hot rolling and rolling defects: force is to apply a small tensile force on the strip. Appliion of tensile force longitudinally 1.7 Rolling mill control: Production of continuous sheets and strips is one of the attractive features of modern rolling mills. However control of sheet thickness and cross-section is

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  • Stability and Accuracy of Agc

    1983-1-1 · INTRODUCTION Most hot strip mills are equipped with AGC-systems on the finishing stands. Installations vary from single stand to all stands AGC hydraulical or electrical positioned. In most systems a feedback (monitor) control is available in modern installations a feedforward system is included.

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  • Algorithm design and appliion of novel GM

    2014-3-16 · The novel GM-AGC system has been applied successfully in a hot strip mill the appliion results show that the thickness control precision is improved significantly with the novel GM-AGC system over 98.6% of the strip thickness deviation of 3.0 mm class can be controlled within the target tolerances of ±20 μm.

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  • Shree Gautam Rolls

    2019-6-20 · Shree Gautam Rolls 9001 : 2015 certified company since 1994 as an exporter and manufacturer we have always been concentrating on the research and development in production of steel rolling mill rolls hot rolling mill rolls chilled rolls spheroidal graphite iron rolls alloy steel adamite rolls forged rolls.

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  • Induction slab heating in a hot rolling process

    Induction heating in cold rolling millsFor cold rolling of thin strips the strip geometries and the material properties must be kept within close tolerances. The precise control capability of induction heating makes it particularly significant for thin strips. Along with full heating with boosters partial heating is used in cold rolling mills.

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  • Research on Intelligence of AGC System in Hot Strip Mill

    [3]. Z. X. Li and X. H. Liu Research of the Gauge Control System for 2160 Hot Strip Mill at Shrugging Metallurgical Industry Automation 2010 100-102. [4]. X. C. Zhang Development and Appliion of AGC Control System for 1500mm Hot Continuous Rolling in Lagging Information Technology 2015 80-83. [5]. F.

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  • The Hot Rolling Process

    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 77000 hp and finally coiling up the lengthened steel sheet for transport to the next process.

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  • ホットストリップミルにおける

    2021-5-11 · IHI Vol.48 No.2 ( 2008-6 ) 107 ホットストリップミルにおける Rolling Technology for Thin Steel Strip in Hot Strip Mill Train システム

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  • Improvement and Appliion of Automatic Gauge Control

    Mill Modulus Control (MMC) is one of important methods on Automatic Gauge Control (AGC) systems of strip rolling mills. It would result in a slower adjusting speed of strip rolling gap to combine

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF

    2003-10-15 · 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 interest - also maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS

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  • ArcelorMittal to complete new hot strip mill in Mexico

    2021-5-18 · ArcelorMittal Mexico plans to complete the construction of a new hot strip mill with a 2.5 million metric ton capacity at its steelmaking site in Lazaro Cardenas by

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  • 4

    1. Configurable work roll bending roller device 2. The whole machine structure is simple easy maintenance operation less investment. 3. Screw down has two kinds control method ordinary electromechanical screw down and AGC hydraulic screw down. AGC 4-hi rolling mill control accuracy especially suitable for high precision cold-rolled strip

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  • Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

    2015-11-4 · P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement – 98 – Another way to determine the thermal expansion of the work roll is the modelling of the heat transfer between the work rolls and the strip. This depends on the roll speed strip thickness the properties of the strip roll gap contact time and cooling parameters.

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  • Micro adjustment AGC of last stand in hot finishing mill

    In order to alleviate this influence micro adjustment AGC of last stand in hot finishing mill based on kernel partial least squares (KPLS) and tracking differentiator (TD) is proposed in this paper. It established relations between F5 and F6 standsnprocess variables through nonlinear feature extraction from rolling information of previous strip.

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  • CHINA STEEL

    2019-5-13 · The hot rolled plant whose annual production capacity is 7 million tons operates on two lines of hot strip mills. In addition to the basic rolling facilities it is equipped with a variety of cutting-edge facilities such as the edge heater the hydraulic automatic gage and width control system the work roll bending system the work roll shift system and the automatic profile and flatness

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  • Research on appliion of Smith predictor to monitor AGC

    2009-6-19 · Research on appliion of Smith predictor to monitor AGC in hot strip rolling mills which has some negative effect on the control of strip thickness so the monitor AGC was not a control system in time. According to the virtual model fitted by true measured parameters the Smith predictor in the monitor AGC was applied to predict the gauge

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  • A Roll

    Indeed many modern hot and cold rolling mills are equipped with “continuously variable crown” (CVC) rolls having cubic diameter profiles that are designed to operate with roll shifting and bending mechanisms for controlling the thickness profile and flatness of the rolled metal strip.

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  • Optimizing Strip Speed Measurement for Mass Flow

    2020-11-18 · The appliion at each roll mill required a set of two LSV’s one loed on either side of the mill. The combination measures strip entry and exit speed for determining elongation or for mass flow calculations. One of the 4-High rolling mills is a reversing mill so the strip could be moving in either direction. Figure 8a is a schematic of

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  • The Hot Rolling Process

    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 77000 hp and finally coiling up the lengthened steel sheet for transport to the next process.

    Get Price
  • [PDF] Research and Appliion of Thickness Control

    Thickness accuracy of plate production depends on Automatic Gauge Control (AGC) in the plate mill area. A typical modern thickness control system design and implementation of a steel plate mill is discussed together with the impact on the design of process models available measurements available control actuators and material properties. A highlevel software design approach provides the

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  • Hot Strip Mill and Cold Rolling Mill

    2021-7-21 · Hot rolling. This process stretches a slab into a strip. The slab is reheated to approximately 1250°C and rolled in hot conditions. The resultant strip steel is wound into a roll like toilet paper (hot coil). Chains for lifting; Toughrollers; Conveyor chains for conveying semi-finished products

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  • CHINA STEEL

    2019-5-13 · The hot rolled plant whose annual production capacity is 7 million tons operates on two lines of hot strip mills. In addition to the basic rolling facilities it is equipped with a variety of cutting-edge facilities such as the edge heater the hydraulic automatic gage and width control system the work roll bending system the work roll shift system and the automatic profile and flatness

    Get Price
  • ArcelorMittal to complete new hot strip mill in Mexico

    2021-5-18 · ArcelorMittal Mexico plans to complete the construction of a new hot strip mill with a 2.5 million metric ton capacity at its steelmaking site in Lazaro Cardenas by

    Get Price
  • FAG Rolling Bearings for Rolling Mill Appliions

    2019-5-24 · In strip mills in fine-section and wire millsthe rolling speedsare often so high thattapered roller thrustbearingsand sphericalroller thrustbearingscannotbe used. In these casesthe axialload is accommodated byangular contact ballbearingsor deep groove ball bearings. For the back-up rollsoflarge four-high strip and foilmillsa deep

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  • Autoset Appliion: Levelers in Hot strip mill

    2017-8-17 · Autoset Appliion: Levelers in Hot strip mill Lianyuan steel has equipped their 2 SMS levelers in the cutting line of the hot strip mill with Autoset couplings. The 155 m long cutting line have a strip width of 2250 mm and run with a strip speed of 40m/min. The Autoset slip and release coupling offers two function.

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  • CHINA STEEL

    2019-5-13 · The hot rolled plant whose annual production capacity is 7 million tons operates on two lines of hot strip mills. In addition to the basic rolling facilities it is equipped with a variety of cutting-edge facilities such as the edge heater the hydraulic automatic gage and width control system the work roll bending system the work roll shift system and the automatic profile and flatness

    Get Price
  • Online Gain Tuning Method of Roll Force AGC in Hot Strip

    Online Gain Tuning Method of Roll Force AGC in Hot Strip Mills by Using Fuzzy Logic. Autores: Young Kow Lee Yu Jin Jang Sang Woon Kim. Localización: IEICE transactions on fundamentals of electronics communiions and computer ISSN 0916-8508 Vol. 90 Nº 6 2007 págs. 1144-1153.

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  • Temperature Monitoring for Hot Rolling Mills

    Temperature Monitoring. Temperature Control in Hot Rolling Mills. Hot Rolling Mills are used to reheat shapes of steel to soften them enough so that they can be rolled thinner and longer through a series of rolling stands. The finished product can be either a strip

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  • Optimization of a Cold Rolling Mill

    2017-7-21 · maximum rolling speed of a cold or foil mill 8 meters of strip is produced. It is easy to see why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1)

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