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Tandem Mill Back Up Rolls

  • USB2Rolling mill and tandem rolling mill having

    A rolling mill which can use work rolls of a smaller diameter for rolling a hard material and a thin strip material and can obtain strips of high product quality with high productivity is provided For this purpose a six high rolling mill includes upper and lower work rolls 2 as a pair for rolling a strip 1 upper and lower intermediate rolls 3 as a pair for supporting the

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  • Chemical Composition PropertyMill Rolls Manufacturer

    Working Layer Composition Hardening Depth mm Roller Application 3 Cr Series ≥880 50 65 Martensite bainite Carbide 40 60 Single stand mill Cold Hot rolling tandem mill.

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  • Coupled Pickling Line Tandem Cold Mill Primetals

    coupled pickling line tandem cold mill High capacity production of high quality products For a wide range of products the required strip thickness flatness and surface quality can be achieved more economically by linking the pickling and cold rolling processes.

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  • Used 60 Steel 4 Stand Tandem Cold Rolling Mill RM 387

    60 Steel 4 Stand Tandem Cold Rolling Mill RM 387 Manufacture Bliss new 1954Many upgrades thru the yearsLast operated in 2011 Material Carbon steel Line Speed 3100 fpm max 945 mpm Strip Width 2460 mm Strip Thickness Entry.185 max 4.7 mmExit.015 min 0.38 mm Coil Size ID24 610 mmOD72 1828 mmWeight60 000 lbs max 27.2

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  • Cold Mill Rolls Work Rolls Backup Rolls Backup Rolls

    PsrollsWe are manufacturer of rolls and roll assemblies complete with bearing assemblies other components manufacturing cold mill rolls work rolls backup rolls backup rolls sleeves induction hardened rolls rolls for cold rolling mills hi rolls hi rolls skin pass rolling mill work roll drive rolls cold rolling mill rolls cluster

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  • NEXT GENERATION ROLLING MILL STAND Primetals

    HSS is normally rolled in tandem cold mills TCMs that employ 4 high or 6 high rolling stands with work roll diameters ranging from 630 mm to 420 mm HSS exceeding 980 MPa has been manufactured by extending TCMs with the installation of an additional mill stand However the demand for steels with up to 1 500 MPa makes it almost impossible to

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  • Premature failure analysis of forged cold back up roll in

    Premature failure analysis of forged cold back up roll in a continuous tandem mill Download Premature failure analysis of forged cold back up roll in a continuous tandem mill Hassan Jafari Mohd Hasbullah Idris Ahmad Monshi Hamid Reza bakhsheshi rad

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  • Robust Tension Control of Strip for 5 Stand Tandem Cold Mills

    In tandem cold mill TCM strip passes through individual pairs of work rolls Each work roll is supported by a backup roll of a large diameter 2 14 In order to achieve good tension control tensiometer is the reliable instrument to measure the tension between stands.

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  • 4 Hi 4 Stand Continental Tandem Cold Rolling Mill

    Pinch Rolls Side Guides 4 Stand Continental Mill 19.50 21 Dia Work Rolls Roller Bearing 50 53 Dia Backup Rolls Pinion Stands 1 1 Stand 1 3500 HP 90225 RPM Stand 2 2 2500 HP 150370 RPM Stand 3 2 2500 HP 225470 RPM Stand 4 2 2500 HP 300600 RPM Backup Roll Change Sled Work Rolls by Porta Bar

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  • AISTech Paper Form Version 8 140221

    Most modern Tandem Cold Mill of five 5 stands with all 6 high mill is provided Work rolls intermediate rolls and back up rolls can be changed while strip is in the mill Work Rolls and Intermediate Rolls are to be changed by full automatic mode Rolls of all stands can be changed simultaneously when roll diameters are larger than

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  • Premature failure analysis of forged cold back up roll in

    Sep 01 2011  A spalled sample from a forged back up roll used in a 5 stand 4 Hi tandem mill was investigated The chemical composition and detailed specifications of the forged back up and work cold rolls are given in Table 1 Table 2 respectively.The sample was washed thoroughly with running distilled water rinsed and ultrasonically degreased with acetone and dried.

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  • PDF VIBRATION MONITORING OF TANDEM MILLS AT THE

    The back up rolls could also be Records from a five stand tandem mill were used for the data analysis The historical databases developed based on incidents strip breaks since 2013 were

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  • Tandem millSumitomo Metal Industries Ltc

    What is claimed is 1 A tandem mill comprising a plurality of stands characterized in that the final stand is a sleeve expanding mill at least one of the stands exclusive of the last stand is a sleeve sliding mill or an intermediate back up roll shifting mill and the other stands are common four high mills.

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  • Types of Rolling millsWith detailed information

    Jul 16 2019  For rolling hard thin materials it may be necessary to employ work rolls of very small diameter but of considerable lenght In such cases adequate support of the working rolls can be obtained by using a cluster mill v Planetary Rolling Mill In this type of rolling mill a large backup roller is surrounded by many planetary working rolls

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  • A novel mass flow controller for tandem hot rolling mills

    Aug 01 2021  Further thickness reductions may follow on a tandem cold rolling mill A tandem rolling mill typically consists of 3 to 8 mill stands that have to be synchronized by control Fig 1 outlines the tandem hot strip rolling mill considered in this work Each of its four height mill stands features 2 work rolls and 2 backup rolls which minimize

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  • Hot and Cold Rolled Steel ExplainedMST Steel Corp

    The problem with a small roll is a reduction of stiffness which is overcome using backup rolls These backup rolls are larger and contact the back side of the smaller rolls A four high mill has four rolls two small and two large A cluster mill has more than 4 rolls usually in three tiers.

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  • Rolling Mill Backup Rolls Manufacturers and Suppliers

    Equipped with one of the best back up roll brands Kaida Roll Group is one of competitive skin pass mill roll temper mill roll tandem mill roll manufacturers and suppliers in China welcome to visit our website Forged steel back up roll is mainly used in 4 Hi mill and 6 Hi mill The diameter of roll

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  • DESIGN AND OPTIMIZATION OF ROLLING MILL CHOCK

    The roll chocks are broadly categorized into 4 types which is shown in fig 3Top Back up Roll Chock 1 Top Work Roll Chock 2 Bottom Work Roll Chock 3 Bottom Back Up Roll Chock Figure 3 Roll chocks Figure 2 Four high stand of reversing cold mill 4 Design of chocks The housing of a work roll or backup roll bearing is known as chock.

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  • Rolls Forged Rolls Backup Rolls Metals

    3 Cr Steel Tandem Mill Back Up Roll Reversing Mill Back Up Roll General Use FB 7 5 Cr Steel Tandem Mill Back Up Roll Reversing Mill Back Up Roll High Hardness.

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  • Rolls Forged Rolls Cold Mill Rolls Metals

    FH 11 3 Cr Steel Tandem Mill Work Roll Reversing Mill Work Roll Skinpass Mill Work Roll General Use FH 15 5 CR Steel Tandem Mill Work Roll.

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  • Shape and Gauge Control of Strip in a Cold Rolling Mill

    Oct 06 2020  The roll rotates to pull and simultaneously squeeze the strip between them The strip is rolled in several passes either in a reversing mill or in a tandem mill Each work roll is supported by a backup roll of larger diameter As the strip passes through the pairs of work rolls in each pass the thickness is successively reduced.

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  • Analysis of Chatter in Tandem Cold Rolling Mills

    A rolling mill stand is represented by a mass spring sys tem with five degree of freedom to calculate the vertical vi bration as shown in Fig 3 It consists of five mass ele ments corresponding to the top and bottom work rolls the top and bottom backup rolls and the housing The elastic deformation behaviour of the rolls is represented by

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  • Forged Steel Rolls for Steel Mills Rolling Mill Rolls

    Complete line projects include Coupled Pickling Tandem Cold Strip Mill PL TCM for POSCO Gwangyang Works and Bridle Steering Unit line for POSCO VST STS SPL Equipment supplied includes Leveler Roll Assembly for Steel Dangjin Works Back Up Roll Assembly at JFE Steel Chiba Works and Pinch Roll Assembly at Dongkuk Steel Dangjin Works.

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  • SMS group Tandem cold mills Steel

    Hydrodynamic roll neck bearings from SMS group are highly advanced and elementary components of modern rolling mill technology That s because they support the load bearing backup rolls Even under extremely tough operating conditions they ensure long roll service life and minimal maintenance outlay.

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  • NEXT GENERATION ROLLING MILL STAND Primetals Technologies

    The applicability of smaller diameter work rolls was made possible by the development of spindles with smaller diameters and higher torque to drive the work rolls As a result it has become possible to achieve targeted strip gauges with one less mill stand in a tandem cold mill which means investment and maintenance cost savings.

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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 with highest pass reductions and simultaneous

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  • Flat Wire Tandem Rolling Mill Lineprecision rolls

    As one of the leading flat wire tandem rolling mill line manufacturers and suppliers in China we warmly welcome you to buy cost efficient flat wire tandem rolling mill line for sale here from our factory All products are with high quality and competitive price For pricelist contact us now.

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  • Used 60 Steel 4 Stand Tandem Cold Rolling Mill RM 387

    60 Steel 4 Stand Tandem Cold Rolling Mill RM 387 Manufacture Bliss new 1954Many upgrades thru the yearsLast operated in 2011 Material Carbon steel Line Speed 3100 fpm max 945 mpm Strip Width 2460 mm Strip Thickness Entry.185 max 4.7 mmExit.015 min 0.38 mm Coil Size ID24 610 mmOD72 1828 mmWeight60 000 lbs max 27.2

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  • REVERSING COLD MILLPrimetals Technologies

    A two stand reversing cold mill can deliver capacities between 300 000 t/a of thin gauge products or 1 000 000 t/a and more of thicker gauge products Main benefits of Primetals Technologies reversing cold mills High production capacity and yield Flexible low cost rolling of a wide range of products especially for small order lots.

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  • Back up Rolls

    Back up Rolls Publish time 13 55 By our long experience coupled with advanced manufacturing facilities and processes we can supply the back up rolls with premium quality for both cold mill tandem mill skin pass mill as well as hot strip mills.

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  • A Review on Chatter Analysis in Cold Rolling process

    element and work backup roll contact was considered as spring element and the back up roll was considered to be rigidly fixed 4 Chatter simulation model by using two degrees of freedom was further observed 5 The four degree of freedom motion of two work roll and two back up roll

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  • Rolls For Cold Rolling MillLoyal Road Inc.

    Work rolls for tandem mill and skin pass mill Backup Roll Forged steel back up roll is mainly used in 4 Hi mill and 6 Hi mill The diameter of roll barrel is 350 1800mm The material of back up roll includes 60CrMo 9Cr2Mo 86CrMoV7 70Cr3Mo 5Cr5NiMoV etc Nam e Type of material

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  • GENERAL ASPECTS OF ROLL COOLING FOR HOT COLD

    proper roll cooling the required thermal roll crown can be controlled in way to influence the overall roll profile It is common practice adjusting the roll cooling to the strip width being rolled Roll cooling is hence an actuator to allow stable rolling conditions of the mill This is particular true for strip tandem rolling mills with regard to

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  • Rolls Forged Rolls Intermediate Rolls Metals

    FH 11 3 Cr Steel Tandem Mill Intermediate Roll Reversing Mill Intermediate Roll Skinpass Mill Intermediate Roll General Use FH 15 5 Cr Steel Tandem Mill Intermediate Roll.

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  • Rolling of Metals in MillsDefinition Types Working

    The two backup rolls are for preventing the deflection while rolling This kind of mill is used for higher reduction in the products and is more rigid in work The above types of rolling processes are based on several rolls Types of Rolling Based on Arrangement The following are on the base basis of arrangement Tandem roll mill

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  • Forged Steel RollBack Up Roll For Rolling Mill TINVO

    Feb 27 2020  Forged Steel Back Up Roll Definition The forged back up roll is a mill roll that supports the work roll and intermediate roll for the purpose of avoiding deflection of the work roll and affecting on the yield and quality of the plate and strip rolling mill This is the key function of back up roll to ensure the operation of the whole rolling mill The common materials are 9Cr2Mo 86CrMoV7

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  • PROCESS OF ROLLING MILLS

    Feb 25 2016  If a mill rolls 80 of the calendar year that is 365 x 24 x 0.80 = 7008 hours If the mill rolls 800 000 tons per year it runs at an average production rate of 114.16 tons/hour If the

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  • tandem mill back up rolls

    tandem mill back up rolls Automatic rolling mill history of tandem rolling mill for Tandem rolling mills benefits The insertion of this new kind of machinery brings countless benefits compared to the old system Production One of the most interesting aspects is the reduction of production time with train of rolls is possible more wire

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  • Backup roll contour of a SmartCrown tandem cold rolling mill

    Abstract SmartCrown was a new system developed by VAI for improving the strip profile and flatness control first applied in 1700 mm tandem cold rolling mills at Wuhan Iron Steel Group Corporation WISCO After tracing and testing the application of the conventional crown backup roll matching the SmartCrown work roll of the production mill led to heavy and nonuniform wear and the edge

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  • Aurubis Buffalo

    Tandem mill installed in 1970 D stand delivery end of 44 tandem breakdown mill Work rolls and backup rolls from 43 and 44 mills await dressing in a roll grinder Betts Bridgeford roll grinding lathe installed in Machinist Tom Shultz measures roll with a micrometer prior to grinding.

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  • PDF VIBRATION MONITORING OF TANDEM MILLS AT THE

    The back up rolls could also be Records from a five stand tandem mill were used for the data analysis The historical databases developed based on incidents strip breaks since 2013 were

    Get Price