hot rolling mill roll eccentricity

  • 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.

  • Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

    P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement98Another way to determine the thermal expansion of the work roll is the modelling of

  • 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

  • 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

  • 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

  • The Differences Between Hot and Cold Rolled Steel

    NOTE Hot-rolling and cold-rolling should not be mistaken for different grades of steel. Steels of different grades can be produced as hot-rolled or cold-rolled. HOT-ROLLED STEEL. Hot-rolling refers to a mill process in which you roll the steel at a temperature above its recrystallization temperature a heat that typically exceeds 1000° F.

  • 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.

  • 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

  • Upgrading of Hot Finishing Mill to 4-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. The expansion of the hot finisher to 4 stands which was

  • 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

  • The Engineering Design of Rolling MillA L Alluminio e Leghe

    A Cold Rolling Mill rolls in subsequent short passes(due to the relative thick material) coiled strip from a thickness of up to 8 mm (coming from Hot Rolling Mill) down to 0.2 mm the mill is designed with high rolling force and power capability and efficient and fast coil handling to minimize the waiting time.

  • 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.

  • 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.

  • 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

  • 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

  • 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.

  • ROLL ECCENTRICITY COMPENSATION (REC)

    Every roll of each roll stack can show such eccentricities which lead to thickness and tension errors which also lead to disturbances in neighboring stands. The result is a mixture of many cyclic disturbances in the exit thickness that in most plants add up to a significant percentage of the total thickness error.

  • 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

  • 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

  • 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

  • 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.

  • 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

  • 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

  • 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

  • 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

  • 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

  • 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

  • Hot Rolling Mill Hydraulic Gap Control (HGC) thickness

    P. Kucsera et al. Hot Rolling Mill HGC Thickness Control Improvement98Another way to determine the thermal expansion of the work roll is the modelling of

  • Active compensation of roll eccentricity in rolling mills

    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.

  • 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

  • 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

  • Proses Pengerolan Canai Panas Canai Dingin Hot Rolling

    Contoh produk cold dan hot rolling. Kemudian contoh rumus menghitung besar persetase cold hot rolling atau contoh prinsip kerja. Kata dalam artikel 2019 "mekanisme mesin cold hot rolling. Pengertian rolling mill stand dan gaya yang bekerja pada rolling serta temperature rolling. Work roll dan back up roll dan tipe mill stang rolling. Kata

  • 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.

  • 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

  • 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

  • Roll ShopWaldrichSiegen

    If you already have a roll shop in service WaldrichSiegen analyzes existing processes and shows where disruptive factors in the workflow can be eliminated. As an option all components of the roll shop can be combined to form one single network with the help of the Roll Shop