Customer case abouthot roll mill hydraulic system

hot roll mill hydraulic system

hot roll mill hydraulic system yanko-wellness.be

hot roll mill hydraulic system; A real-time expert system for the condition. 359 A real-time expert system for the condition monitoring of hydraulic control systems in a hot steel strip finishing mill K W Gale and J Watton* Cardiff School of Engineering, Cardiff University, Wales, UK.

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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.

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hot roll mill hydraulic system multiergo.fr

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.

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Hot Rolling Nippon Yakin

Nippon Yakin's 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.

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Highest performing Hot Strip Mills Primetals Technologies

MSD is a hydraulic cylinder installed to mill housing window and press a roll chock against the opposite side with constant force. MSD eliminates gap between roll chocks and mill housing, keep rolls in proper position and stabilize rolls. Enables stable rolling at

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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.

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

2019-2-4  the rolls get deflected by high rolling forces. Elastic deformation of the mill takes place. If we use stiffer rolls, namely roll material of high stiffness or elastic constant, we could avoid mill spring. Normally elastic constant for mills may range from 1 to 4 GNm-1. Roll elastic deformation may result in uneven sheet thickness across.

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Modeling and Simulation of Electric-hydraulic Control

2008-9-8  Abstract—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.

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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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Looper and tension control in hot rolling mills: A survey

2007-7-1  The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 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

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Hot Rolling Nippon Yakin

Nippon Yakin's 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.

get price

Highest performing Hot Strip Mills Primetals Technologies

MSD is a hydraulic cylinder installed to mill housing window and press a roll chock against the opposite side with constant force. MSD eliminates gap between roll chocks and mill housing, keep rolls in proper position and stabilize rolls. Enables stable rolling at

get price

Modernization of the hot plate rolling mill thickness

2017-10-27  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 conducted

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

2019-2-4  the rolls get deflected by high rolling forces. Elastic deformation of the mill takes place. If we use stiffer rolls, namely roll material of high stiffness or elastic constant, we could avoid mill spring. Normally elastic constant for mills may range from 1 to 4 GNm-1. Roll elastic deformation may result in uneven sheet thickness across.

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Wrapper Roll Control System of Hot Strip Mill SpringerLink

Wrapper roll is one of the most important components in rolling coiler. And it has great relation to the quality of the final products. Based on the programming and optimization experience, a hot strip coiler with new coiling process, which operates with position control and pressure control is introduced. Control method and operational mode

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Looper and tension control in hot rolling mills: A survey

2007-7-1  The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 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

get price

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

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Strip Thickness Control of Cold Rolling Mill with Roll

2013-11-12  the roll gap, or the roll bite) between the work rolls. In this region the metal is plastically deformed, and there is slipping between the strip and the work roll surface. The necessary compression force is applied by hydraulic rams, or in many older mills by a screw arrangement driven by an electric motor [6]. Figure 1.

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Dynamic modelling and simulation of a hot strip finishing

2009-7-1  A 7-stand finishing mill is shown in Fig. 2, together with the runout table and coiler.Typical values for strip thickness, temperature and speed are also given. A 4-high mill stand consists of two work rolls and two backup rolls supporting them, the former having a smaller diameter as seen in Fig. 2.The backup roll supports the work roll to mitigate the deflection caused by the deformation force.

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Hydraulic system vertical roller mill operation

2015-3-25  Hydraulic system vertical roller mill operation 1. The working principle of the hydraulic system vertical roller mill The hydraulic system ofvertical mill is an important system, the main function ofthe hydraulic system is to break the grinding roller, which is when the internal grinding cavity wear parts wear, can stop open on both sidesofthe grinding roller mill

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Modernization of the hot plate rolling mill thickness

2017-10-27  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 conducted

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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

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Modelling of the hydraulic work roll bending control

2017-2-3  Abstract: 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.

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Looper and tension control in hot rolling mills: A survey

2007-7-1  The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 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

get price

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

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High Response Control System and Diagnosis System for

2021-5-11  mills, hot rolling mills, plate rolling mills and seamless tube mills, with the dramatic improvements in the high responsiveness of the hydraulic roll gap control system and the thickness accuracy achieved by the control unit for variable mill modulus control that

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Dynamic modelling and simulation of a hot strip finishing

2009-7-1  A 7-stand finishing mill is shown in Fig. 2, together with the runout table and coiler.Typical values for strip thickness, temperature and speed are also given. A 4-high mill stand consists of two work rolls and two backup rolls supporting them, the former having a smaller diameter as seen in Fig. 2.The backup roll supports the work roll to mitigate the deflection caused by the deformation force.

get price

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

get price

Energy-Efficient Cooling and Hydraulic Descaling Systems

2020-11-11  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

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ROLL GRINDERS AND AUTOMATIC ROLL SHOPS

2017-10-19  Cold & Hot Mill Work and intermediate rolls Ø max. 800mm With and without chocks Cold & Hot Mill Work, intermediate and back-up rolls Ø max. 1800mm With and without chocks Plate & Hot Mill Work rolls, back-up rolls Ø max. 2400mm + With and without chocks Paper Mill, Roll Makers, Other Special Applications For all roll and mill sizes CNC ROLL

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