Tandem Mill Back Up Rolls

  • Premature failure analysis of forged cold back up

    IntroductionIn rolling mill operation a four roll high stand tandem mills including two work rolls and two back up rolls are used to reduce force and power of work roll as well as increase the accuracy and thickness uniformity of thin sheets Back up rolls are the main trait of hot and cold roll mills which decrease unintended bending and support the work rolls enabling them to endure higher

    Get Price
  • Backup roll contour for edge drop control

    Based on ANSYS software and industrial rolling of edge drop control a 3 dimensional finite element model of roll stacks was built for 1 700 mm tandem cold rolling this model the reasons for some problems exists on the 1 700 mm tandem cold rolling mill configuration of the conventional backup roll and tapered work roll system such as the lower shape control the poor edge drop control

    Get Price
  • mechanical engineering Types of rolling mills

    The two middle are smaller in size than the top and bottom rolls which are called backup rolls for providing the necessary rigidity to the smaller rolls A four high rolling mill is used for the hot rolling of armor and other plates as well as cold rolling of plates sheets and strips 4 Tandem rolling mills It is a set of two or three stands of roll set in parallel alignment So that a

    Get Price
  • Classification of Rolling mills IspatGuru

    · Tandem mills are the type of rolling mills where rolling is done in one pass Fig 2 In a traditional rolling mill rolling is done in several passes but in tandem mill there are several stands equal to or more than 2 stands and reductions take place successively The number of stands can range from 2 to 18 Tandem mills can be either of hot rolling or cold rolling mill types Fig 2 Types

    Get Price
  • Sugarcane mill Wikipedia

    Those mills can have from 3 up to 6 rolls every set of mills is called a tandem mill or mill train To improve the milling extraction efficiency imbibition water is added at each mill Hot water is poured over the cane just before it enters the last mill in the milling train and is recirculated up to reach the first mill The juice squeezed from this cane is low in sugar concentration and is

    Get Price
  • Premature failure analysis of forged cold back up roll in

    In this paper premature failure of a forged back up roll from a continuous tandem mill was investigated Microstructural evolutions of the spalled specimen and surface of the roll were characterized by optical microscopy X ray diffraction scanning electron microscopy and ferritscopy while hardness value of the specimen was measured by Vickers hardness testing The results revealed that the

    Get Price
  • A strip is to be rolled from a thickness of 30 mm to 15 mm using a two high mill having rolls of diameter 300 mm The coefficient of friction for unaided bite should nearly be a b c d Answer 3 In the rolling process roll separating force can be decreased by a reducing the roll diameter b increasing the roll diameter c providing back up rolls d increasing

    Get Price
  • Premature failure analysis of forged cold back up roll in

    In this paper premature failure of a forged back up roll from a continuous tandem mill was investigated Microstructural evolutions of the spalled specimen and surface of the roll were characterized by optical microscopy X ray diffraction scanning electron microscopy and ferritscopy while hardness value of the specimen was measured by Vickers hardness testing The results revealed that the

    Get Price
  • Cold Mill Rolls Work Rolls Backup Rolls

    We are manufacturing forged work rolls backup rolls Leveller rolls pinch rolls centrifugal cast rolls table rolls pipe rolls fabricated rolls etc Other components we are manufacturing for the steel rolling mills are spindle shafts cardan shafts drive shafts and other machined components We are manufacturing the same against their specifications drawings

    Get Price
  • A strip is to be rolled from a thickness of 30 mm to 15 mm using a two high mill having rolls of diameter 300 mm The coefficient of friction for unaided bite should nearly be a b c d Answer 3 In the rolling process roll separating force can be decreased by a reducing the roll diameter b increasing the roll diameter c providing back up rolls d increasing

    Get Price
  • AISTech Paper Form Version 8 140221 Steel Plantech

    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 certain figure without decreasing strip speed in

    Get Price
  • Tandem Mill Back Up Rolls In Valparaiso

    Tandem Mill Weirton Backup Rolls Tandem Mill Back Up Roll Reversing Mill Back Up Roll High Hardness Get Price Edge Drop Control Technology of 4tandem mill back up rolls in valparaiso casaferrari Tandem rolling mill Wean United Inc Free Patents Jul 15 1986· A tandem rolling mill having a plurality of stands with each stand having a pair of work rolls and a pair of backup rolls

    Get Price
  • SMS group Section and billet mills

    We developed a universal rolling method using a tandem reversing group That ensures you can cost effectively roll rails as well as beams and other sections on the same compact mill More Information Heavy section mills One mill diverse products Extremely versatile heavy section mills produce not only beams but also channels angles shipbuilding sections special sections and sheet

    Get Price
  • Strip Thickness Control of Cold Rolling Mill with Roll

    · two back up rolls and two work rolls A common prob lem is the back up and work rolls are not perfectly circu lar in shape In other words the rolls are eccentric The roll eccentricity effect will under normal constant oper ating forces result in steel strip with undesirable thick ness deviations 1] Fuzzy logic provides an inference

    Get Price
  • US4596130A Rolling mill Google Patents

    A rolling mill stand in which at least one of the back up rolls is given a convex crown around the roll body in an amount from mm to 10 mm in diameter and at least one of the work rolls contacting the back up rolls is given a concave crown around the roll body under the condition × ≧ ≧× Also disclosed are mill arrangements in which at least one

    Get Price
  • GENERAL ASPECTS OF ROLL COOLING FOR HOT COLD ROLLING MILLS

    This is particular true for strip tandem rolling mills with regard to steering the strip ensuring it remains in the mill centre In cold rolling applications roll cooling always goes along with lubricating of the roll gap when using water based emulsions or dispersions and rolling oil The so called selective roll cooling is applied mainly for cold rolling mills to control the asymmetrical

    Get Price
  • Strip Thickness Control of Cold Rolling Mill with Roll

    · two back up rolls and two work rolls A common prob lem is the back up and work rolls are not perfectly circu lar in shape In other words the rolls are eccentric The roll eccentricity effect will under normal constant oper ating forces result in steel strip with undesirable thick ness deviations 1] Fuzzy logic provides an inference

    Get Price
  • Selection of Work Roll Diameter for Cold Rolling Mill

    Therefore in the case of a tandem mill it should be necessary to consider the optimization of roll diameter individually as well as for the total system I Introduction There have been reports on the selection of the most suitable diameter of work roll in rolling 2 Recent technological advances in the rolling equip ments and their operation however require the modi fication and

    Get Price
  • Tandem Mill Back Up Rolls In Valparaiso

    Tandem Mill Weirton Backup Rolls Tandem Mill Back Up Roll Reversing Mill Back Up Roll High Hardness Get Price Edge Drop Control Technology of 4tandem mill back up rolls in valparaiso casaferrari Tandem rolling mill Wean United Inc Free Patents Jul 15 1986· A tandem rolling mill having a plurality of stands with each stand having a pair of work rolls and a pair of backup rolls

    Get Price
  • US4596130A Rolling mill Google Patents

    A rolling mill stand in which at least one of the back up rolls is given a convex crown around the roll body in an amount from mm to 10 mm in diameter and at least one of the work rolls contacting the back up rolls is given a concave crown around the roll body under the condition × ≧ ≧× Also disclosed are mill arrangements in which at least one

    Get Price
  • 4 High Rolling Mill Element

    Rolling mill consisting of four rolls or known as a 4 High rolling mill is used for reducing material to extremely small thicknesses Through the use of larger backup rolls the issues of roll deflection can be avoided and smaller work rolls can be used This reduction in work roll diameter Reduces overall separating force required for reductions Reduces overall energy needed for reducing

    Get Price
  • AR Ispat

    Hot cold mills Back Up rolls Continuous Semi Continuous hot strip mills Back Up rolls Roughing 4 High stands Back Up rolls Cold tandem mills Back Up rolls Thick plate mill Back Up rolls CSR The steel industry has a significant impact on people communities and countries Our first priority is to do our job right and serve our clients with integrity but we also understand that in

    Get Price
  • Backup roll contour of a SmartCrown tandem

    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

    Get Price
  • SMS group Hot rolling mills Aluminum

    You are guaranteed to benefit from SMS groups long standing technological expertise in hot rolling processes for the aluminum industry Out of this comes highly developed technology automation and service packages that feature custom designed solutions for all your wants and needs

    Get Price
  • Hot and Cold Rolled Steel Explained MST Steel

    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 These types of mills are commonly used to hot roll wide plates most cold rolling applications and to roll foils [9]

    Get Price

Related Posts