• Strip Thickness Control of Cold Rolling Mill with Roll

     · description of the cold rolling process is presented. In Section 3 a mathematical model has been driven for sin-gle-stand cold rolling mill. In Section 4 architecture and learning algorithm Fuzzy Neural Networkof have been presented. In Section 5 thickness control with roll ec-centricity compensation has been proposed. In Section 6

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  • Thin strip profile control capability of roll crossing and

     · Thin strip profile control capability of roll crossing and shifting in cold rolling mill . Abstract . Controlling cold strip profile is a difficult and significant problem has been found in industry during thin strip rolling. At present choosing the new type of strip rolling mill is the one of main methods to control

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  • Axial Force Analysis and Roll Contour Configuration of

    Then a CVC work roll curve designing scheme was proposed and it was carried out on some cold rolling mill considering the requirement of comprehensive work roll axial force minimization. The status of comprehensive work roll axial force is improved considering the rolling schedule that is

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF

     · In the late 1990s finally ICDP enhanced with carbide improved roll performance and started a new phase for this old grade still successfully in use today in work rolls for early finishing stands of finishing hot strip mills (replacing high chromium iron and HSSsee further down) and for plate mills.

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  • Roll chocks in Rolling MillIspatGuru

     · Roll chocks of different design are needed for top roll and bottom roll in a two high mill because of the roll screw down mechanism and adjusting and balancing equipment. Upper roll chock has a support with an additional lining for holding up the top roll when the rolling mill is idling.

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  • Roller Stress and Strain in a Broad-Strip Cold-Rolling Mill

     · On the basis of SIMULIA Abaqus finite-element software the stress and strain in the rollers of a four-high rolling mill may be mathematically described. The convex–concave (CVC) profiling of the rollers and the axial shift of the working rollers are taken into account here. The transverse profile of the cold-rolled strip obtained by simulation is verified experimentally.

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  • Analysis of thin strip profile by work roll crossing and

     · asymmetrical cold rolling Abstract In order to analyze the effects of cold rolling parameters such as the crossing angle and axial shifting value of work rolls on the strip profile extensive tests were carried out on a 4-high rolling mill equipped with a work roll crossing and shifting system.

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  • Residual Stress Measurement in Steel Mill Rolls Using

     · Fig 3 Axial and hoop stress distribution in backing roll No 37 (diameter 1520 mm) after each stage of the exploitation in a cold rolling mill No 1 During the second campaign a cobble occurred. In the areas of material sticking both stresses axial and hoop) rose radically.

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF

     · 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 interestalso maybe later. K. H. Schröder July 2003 K. H. Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File SCHROEDER_ROLLS_010703.DOC

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  • Cold rolling technology for carbonANDRITZ

    Quarter-section of a 4-high mill stand with axial work roll shifting Quarter-section of a 6-high mill stand with axial longstroke intermediate roll shifting . cold rolling mill adapted to the individual re­ quirements of the customer s product mix. Mill key components (1) Finite element optimized mill housing

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  • Axial Thread Rolling For CNC Lathe Users Modern Machine

     · Pick A Thread. Current capacities for axial thread rolling heads range from 0.06 to 9 inches in diameter. Besides standard 60-degree profiles acme buttress knuckle knurls splines special profiles and burnishing are possible. Like the chamfer on a tap the beginning of the thread roll is progressive.

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  • A BASIC UNDERSTANDING OF THE MECHANICS OF

     · 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 interestalso maybe later. K. H. Schröder July 2003 K. H. Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File SCHROEDER_ROLLS_010703.DOC

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  • Cold rollingANDRITZ

    Innovative technologies. One of the most outstanding products in the ANDRITZ Metals portfolio is its patented S6-high rolling mill. This mill is increasingly used for stainless steel strip rolling either as in-line tandem mill for cold rolling or in the entry section of hot-strip stainless steel annealing and pickling lines to roll black hot strip

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  • Roll Rolling Mill and Rolling MethodJP STEEL PLANTECH CO.

    A rolling mill in accordance with claim 14 wherein the function of the roll-crown periphery in the central region and the function of the roll-crown periphery from the local maximum point to the nearer roll end are determined so that when the axial relative position of the rolls are determined so as to adjust a roll gap corresponding to the

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  • Thin strip profile control capability of roll crossing and

     · Thin strip profile control capability of roll crossing and shifting in cold rolling mill . Abstract . Controlling cold strip profile is a difficult and significant problem has been found in industry during thin strip rolling. At present choosing the new type of strip rolling mill is the one of main methods to control

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  • Benefits of optimising roll cooling when rolling aluminium

     · The work roll cooling needs to be recognised as a vital part of the rolling process. The benefits of optimising the cooling arrangement include • Improved dimensional control (flatness or profile) from precise axial application of the coolant to the work roll surface. This allows accurate control of the magnitude of the work roll thermal

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  • Cold rolled sheet (roll) common defects characteristics

    Roll printing. Periodic pits or convex hulls appear on the surface and severe roll marks cause the strip to pass through. 1The strip weld is too high or the cleaning is uneven causing the sticking roller when rolling 2The hard metal (bead metal scrap etc.) or dirt is stuck on the roller.

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  • Thin strip profile control capability of roll crossing and

     · rolling mill revamped for the purpose of research as a work roll crossing and shifting system. The confirmatory tests were performed by modifying an ordinary cold rolling mill to work roll crossing and shifting system. The specification for the test mill is given in Table 1. The cross angle can be changed by moving the roll nick with screw nuts.

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  • Strip Thickness Control of Cold Rolling Mill with Roll

     · description of the cold rolling process is presented. In Section 3 a mathematical model has been driven for sin-gle-stand cold rolling mill. In Section 4 architecture and learning algorithm Fuzzy Neural Networkof have been presented. In Section 5 thickness control with roll ec-centricity compensation has been proposed. In Section 6

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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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  • Cold rolled sheet (roll) common defects characteristics

    Roll printing. Periodic pits or convex hulls appear on the surface and severe roll marks cause the strip to pass through. 1The strip weld is too high or the cleaning is uneven causing the sticking roller when rolling 2The hard metal (bead metal scrap etc.) or dirt is stuck on the roller.

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  • FAG Rolling Bearings in Rolling MillsSchaeffler

     · Roll neck bearings 4 Design conditions 4 Cylindrical roller bearings 5 Axial bearings 6 Tapered roller bearings 7 Spherical roller bearings 9 Axial tapered roller bearings for screw-down mechanisms 9 Calculation of bearing load 10 Self-aligning chocks 10 Strip rolling 10 Groove rolling 11 Rigid chocks 12 Calculation of roll deflection 13

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  • SEALED ROLL NECK BEARINGSTimken

     · including Timken Premium Mill grease which is known for its excellent resistance to water washout. Timken sealed roll neck bearings and seals are designed to work with different types of oil lubrication systems as well. Contact your Timken engineer for assistance with grease type fill recommendations and applications in oil-lubricated systems.

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  • Axial Thread Rolling For CNC Lathe Users Modern Machine

     · Pick A Thread. Current capacities for axial thread rolling heads range from 0.06 to 9 inches in diameter. Besides standard 60-degree profiles acme buttress knuckle knurls splines special profiles and burnishing are possible. Like the chamfer on a tap the beginning of the thread roll is progressive.

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  • Strip Thickness Control of Cold Rolling Mill with Roll

     · description of the cold rolling process is presented. In Section 3 a mathematical model has been driven for sin-gle-stand cold rolling mill. In Section 4 architecture and learning algorithm Fuzzy Neural Networkof have been presented. In Section 5 thickness control with roll ec-centricity compensation has been proposed. In Section 6

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  • Work Roll Shifting Scientific.Net

    At present choosing the new type of strip rolling mill is the one of main methods to control the strip shape quality in cold rolling. The influences of rolling process parameters such as the work roll cross angle and work roll shifting on the strip shape and profile of thin strip are recognised throughout this study.

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  • Roller Stress and Strain in a Broad-Strip Cold-Rolling Mill

     · The stress and elastic strain are simulated on the basis of a three-dimensional model of the roller system in the four-stand cold-rolling mill at PAO Severstal. The stands have been modernized with the introduction of axial shift of the working rollers and CVC profiling of the working and supporting rollers . In addition the diameter of the roller barrel decreases with increase in the length and roller bearings

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  • Benefits of optimising roll cooling when rolling aluminium

     · The work roll cooling needs to be recognised as a vital part of the rolling process. The benefits of optimising the cooling arrangement include • Improved dimensional control (flatness or profile) from precise axial application of the coolant to the work roll surface. This allows accurate control of the magnitude of the work roll thermal

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  • Bearings for Steel IndustryNSK

     · Cold rolling mills Tension levellers Multi-roll rolling cluster mills Chain conveyors Double-Row Tapered Roller Bearings for Axial Loads Tapered Roller Bearings for Axial Loads Plummer Blocks S-Type Sealed-Clean Bearings for Chain Conveyors Please refer to . No. E1238 and No.E1237 for details.

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  • Cold rolled sheet (roll) common defects characteristics

    Roll printing. Periodic pits or convex hulls appear on the surface and severe roll marks cause the strip to pass through. 1The strip weld is too high or the cleaning is uneven causing the sticking roller when rolling 2The hard metal (bead metal scrap etc.) or dirt is stuck on the roller.

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  • Roll Rolling Mill and Rolling MethodJP STEEL PLANTECH CO.

    A rolling mill in accordance with claim 14 wherein the function of the roll-crown periphery in the central region and the function of the roll-crown periphery from the local maximum point to the nearer roll end are determined so that when the axial relative position of the rolls are determined so as to adjust a roll gap corresponding to the

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