• Neural network for identification of roll eccentricity in

    Jun 15 1996 · 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.

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  • Robert-Gubernat

    Major projects included Back-up roll eccentricity compensation for 3 stand cold mill at Reynolds Metals Plate mill setup models for Dongkuk Steel Company Steckel mill setup models for IPSCO mandrel mill setup models stretch reducing mill setup models mill facilities planning and crop end control for USS Seamless Pipe Mill Laminar flow set-up models for USS Fairfield Works Hot Strip Mill

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  • Roll Eccentricity Control Using Identified Eccentricity of

    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

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  • CNBDouble-roller casting rolling-hot

    1. double-roller casting rolling-hot continuous rolling method this method content is pour into the aluminum or aluminum alloy melt between a pair of internal water cooling casting roller continuously it is rolled into preset thickness by twin-roll cast-rolling mill-hot-rolling mill crop also is rolled into coiled material it is characterized in that the casting section length is between

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  • Advanced technologies for a new 20-roll mill stand

    The new 20-roll stand produces 110 000 t per year of cold rolled strip with a width of up to 1350 mm and a thickness between 0.2 to 2.5 mm at a rolling speed of max. 800 m/min. It processes coils weighing up to 30 t. ABB sets standards in the automation of stainless-steel mill stands For this cold rolling mill ABB applies the complete

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  • Roll Cooling Lechler

    In the metalworking rolling process in hot and cold rolling mills heat is generated by friction and deformation in the mechanical forming of the rolling stock. As a result efficient cooling of the rolls as well as the surrounding roll area is essential for the forming process in order to ensure stable roll temperatures and effective heat

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  • Strip Thickness Control of Cold Rolling Mill with Roll

    Nov 12 2013 · Roll eccentricity is not part of the controller but must be considered to be consistent with data reported from operating mills which . Figure 3. Effects of roll eccentricity on output strip thick- ness. usually includes its effects. The eccentricity components remaining in the mill

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  • Method of measuring and compensating roll eccentricity of

    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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  • USARolling mill control for compensating for the

    Roll eccentricity correction system and method USA (en) Ltd. Method and apparatus for controlling eccentricity of rolls in rolling mill DEA1 (en) Ltd Means for controlling the thickness of the rolling in a rolling mill

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  • how to control eccentricity problem in hot rolling mill

    How To Control Eccentricity Problem In Hot Rolling Mill. production planning and control in hot roll mill pdf. ABB drives and control system for hot rolling mills. Rolling Mills supporting all mill crew to optimize quality Get Price Here

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  • CiteSeerX — FAULT DIAGNOSIS OF ROLL SHAPE UNDER THE

    In this study a new diagnosis method for roll eccentricity under the roll speed changes was developed. The new method was induced from analyzing the rolling mechanism by using rolling force models radius-speed relationship and measured rolling force etc. Simulation results by using the field data show that the proposed method is very useful.

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  • Roll Cooling Lechler

    In the metalworking rolling process in hot and cold rolling mills heat is generated by friction and deformation in the mechanical forming of the rolling stock. As a result efficient cooling of the rolls as well as the surrounding roll area is essential for the forming process in order to ensure stable roll temperatures and effective heat

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  • Robert-Gubernat

    Major projects included Back-up roll eccentricity compensation for 3 stand cold mill at Reynolds Metals Plate mill setup models for Dongkuk Steel Company Steckel mill setup models for IPSCO mandrel mill setup models stretch reducing mill setup models mill facilities planning and crop end control for USS Seamless Pipe Mill Laminar flow set-up models for USS Fairfield Works Hot Strip Mill

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  • Loop monitoring and assessment of hot strip mill control

    casted steel slabs and rolled in two stands down to desired thickness. The first stand is a conventional roughing mill. The last stand is a steckel mill. It is a special rolling technique that is only used in a small number of hot strip mills in the world. When this special technique is used the demand on the control is

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  • Technology packages for the metals industry

    Roll Eccentricity Compensation Elimination of a known strip thickness quality disturbance from rolls Strip Width Control ISV Roll coolant spray bars for hot and cold rolling mill strip flatness control Air Bearing Shapemeter Shape measurement of rolled metal sheet and foil Schneider® Filter

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  • SEALED ROLL NECK BEARINGSTimken Company

    Flat product rolling mills require well- bearings for rigorous applications in hot and cold rolling mills while continuously improving the company s bearings and seals to keep pace with the demands of the metals industry. and eccentricity. Secondary seal lip

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  • 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. 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 Control Using Identified Eccentricity of

    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

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  • MetalsMaster™Honeywell Process

    Honeywell has engineered MetalsMaster specifically to meet the needs of aluminum rolling mills. MetalsMaster incorporates advanced features such as roll eccentricity control and mass flow control along with proven control technologies like tension and speed AGC for foil mills hydraulic gap control (HGC) for cold mills and speed/load

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  • MetalsMaster™Honeywell Process

    Honeywell has engineered MetalsMaster specifically to meet the needs of aluminum rolling mills. MetalsMaster incorporates advanced features such as roll eccentricity control and mass flow control along with proven control technologies like tension and speed AGC for foil mills hydraulic gap control (HGC) for cold mills and speed/load

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  • Hot Mill Rolls Rolling Mill Rolls ManufacturerZhuzhou UKO

    They are generally heated to 1100 to 1250°C for rolling. This rolling process is called hot rolling. The termination temperature of hot rolling is generally 800 to 900°C and then it is generally cooled in air so the hot rolling state is equivalent to normalizing treatment. Most steels are rolled by hot rolling.

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  • Hot Rolling MillYouTube

    Apr 23 2012 · (Roll forming http //youtu /k6iODHla6qY)This film takes you through the processes within a hot rolling mill. You ll get to see the different stages all th

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  • USARolling mill control for compensating for the

    Roll eccentricity correction system and method USA (en) Ltd. Method and apparatus for controlling eccentricity of rolls in rolling mill DEA1 (en) Ltd Means for controlling the thickness of the rolling in a rolling mill

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  • Non-circular grinding of backup rolls to reduce rolling

    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 Contemporary steel mills are operating on a global market and the

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  • FAULT DIAGNOSIS OF ROLL SHAPE UNDER THE SPEED

    find both eccentricity magnitude and eccentricity location in the roll as shown in Fig.10. But as shown in Fig.12 not only magnitude of eccentricity but also location of eccentricity in the roll is obtained. 4.2 Simulations with Field Data Fig.13 shows a simplified multi-stand hot rolling system. The rolling system consists of seven stands.

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  • USARolling mill control for compensating for the

    Roll eccentricity correction system and method USA (en) Ltd. Method and apparatus for controlling eccentricity of rolls in rolling mill DEA1 (en) Ltd Means for controlling the thickness of the rolling in a rolling mill

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  • Loop monitoring and assessment of hot strip mill control

    casted steel slabs and rolled in two stands down to desired thickness. The first stand is a conventional roughing mill. The last stand is a steckel mill. It is a special rolling technique that is only used in a small number of hot strip mills in the world. When this special technique is used the demand on the control is

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  • AboutMill Rolls Manufacturer

    Thanks to years exploration TSR has developed series of products which are sold to over 30 countries and regions including rolls and sleeves for hot rolling mills forged steel rolls and rolls of

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  • Reducing thickness variation of hot rolled steel strip by

    Jul 18 2013 · Typically back-up rolls in hot strip mills are equipped with sliding bearings and it is common to use a key that prevents relative motion between the conical sleeve and the roll shaft. The key groove causes deformation of the sleeve under load.

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  • Fault diagnosis of roll shape under the speed variation in

    In this study a new diagnosis method for roll eccentricity under the roll speed changes was developed. The new method was induced from analyzing the rolling mechanism by using rolling force models radius-speed relationship and measured rolling force etc. Simulation results by using the field data show that the proposed method is very useful.

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  • Roller Guide BoxGear Couplings and Pinch Rolls

    The range comprises Roller Guide Box Pinch Rolls Reduction Gear Box for Cold Rolling Machines Pinion Stands for Cold Roll Machine Steel Rolling Mill Stand for Cold Roll Machine and more. These are easy to operate and install machines and we can customize them

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  • Roll Eccentricity Control for Strip Rolling Mills

    Jul 01 1987 · SIMULATION RESULTS In eccentricity control the following practical considerations apply to production rolling mills and thus should be cons idered in the des ign of relevant simulation studies • the incoming feed can introduce periodic disturbances in the form of hot rolled thickness disturbances or uncoiler induced tension fluctuations

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  • CNBDouble-roller casting rolling-hot

    1. double-roller casting rolling-hot continuous rolling method this method content is pour into the aluminum or aluminum alloy melt between a pair of internal water cooling casting roller continuously it is rolled into preset thickness by twin-roll cast-rolling mill-hot-rolling mill crop also is rolled into coiled material it is characterized in that the casting section length is between

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  • Technological control for cold rolling processes

    Roll eccentricity control Irregularities in roll geometry cause periodic varia-tions in the roll gap which can lead to variations in thickness of the rolled product. The predominant sources of these variations are the backup rolls of the stand. The function compensates for periodic disturbance from geometric asymmetries on the backup rolls. An

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  • Rolling mill roll eccentricity controlKaiser Aluminum

    The invention relates to the control of rolling mill backup roll eccentricity by combining the load carrying characteristics of rolling mill tapered roller bearing assemblies during rolling with prescribed levels of axial thrust to effect a controlled deflection of backup roll necks on a 4-high rolling mill or the like due to the selected thrust force applied axially to the ends or necks of

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  • Method of measuring and compensating roll eccentricity of

    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.

    Chat Online
  • Technology packages for the metals industry

    Roll Eccentricity Compensation Elimination of a known strip thickness quality disturbance from rolls Strip Width Control ISV Roll coolant spray bars for hot and cold rolling mill strip flatness control Air Bearing Shapemeter Shape measurement of rolled metal sheet and foil Schneider® Filter

    Chat Online

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