backup roll contour of a stcrown tandem cold rolling mill

  • Winner s Engineering Solutions 4 High Rolling Mills

    conventional four–high mills work roll bending providing a way setting to influence strip shape and flatness within limits is considered an improvement on the rigid roll contour in conjunction with an online flatness measuring a partial automation is possible. 4- Hi Mill Specification. Special Mill Features

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  • Winner s Engineering Solutions 4 High Rolling Mills

    conventional four–high mills work roll bending providing a way setting to influence strip shape and flatness within limits is considered an improvement on the rigid roll contour in conjunction with an online flatness measuring a partial automation is possible. 4- Hi Mill Specification. Special Mill Features

    Get Price
  • Dynamic characteristics of cold rolling mill and strip

    The work roll and backup roll were taken as elastic continuous bodies the effect of shear and moment of inertia were taken into consideration and then the dynamic model of rolls was built. The two models were coupled together and the dynamic model of rolling mill was built.

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  • Combined operating modes and frame types in tandem cold

    May 03 2007 · The invention relates to a method for combining the operating modes of individual rolling frames in a tandem cold rolling mill comprising respective pairs of working rolls (10) and back-up rolls (12) in 4-roll frames and in addition a pair of intermediate rolls (11) in 6-roll frames at least the working rolls (10) and the intermediate rolls (11) interacting with devices for axial displacement.

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  • CVC cyclical shifting mode and its working characteristics

    Mar 12 2016 · The compact strip production (CSP) line has two different rolling schedules rolling strips with same width or rolling strips with different widths alternately. However the continuously variable crown (CVC) work rolls used in the CSP production line do suffer from non-uniform wear in conventional shifting mode. A cyclical shifting mode for CVC work rolls is developed to uniform the work roll

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  • Backup roll contour of a SmartCrown tandem cold rolling mill

    Enhancing the self-maintenance of the backup roll and the work roll After the FSR backup roll is used the states of roll contact and roll wear are improved and the contour of G.H. Yang et aL Backup roll contour of a SmartCrown tandem cold rolling mill 361 the backup roll and the work roll in good self-maintenance is made and the consumption

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  • SOLUTIONS FOR ALUMINIUM ROLLING MILLS TECHNOLOGY

    Tandem cold-rolling mill Cold-rolling mill Slitting line Cut-to-length line Automatic high-bay store • For perfect cooling and contour control we provide DSR backup roll technology SmartCrown roll technology and 6-high stand design.

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  • Prediction of Strip Profile in Rolling Process Using

    The mill is simulated by beams (rolls) on the infinite elastic half space (between rolls and strip). The roll deflection and indentation are calculated using the influence coefficients and Boussinesq s equations respectively. The roll contours in the contact zone can be expressed in terms of the influence coefficient and indentation matrices.

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  • Taper Roll Contour Design for Edge Drop Control of Non

    The taper work roll of the 1700 mm tandem cold rolling mills had some problems in the course of using and the taper roll contour was ground difficultly and the difference between the designed contour and grinding contour was very big and the work roll and backup roll had very serious and non-uniform roll wearing and even often had roll spalling and above those problems affected the

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  • READY FOR TOMORROW S MARKET Primetals Technologies

    FEATURES OF THE TANDEM COLD-ROLLING MILL. flatness results can be attributed to the patented SmartCrown flatness-control system that is highlighted by a special roll contour geometry for the intermediate and backup rolls. The system offers significant advantages in terms of profile and higher- order shape control.

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  • Optimization of Backup Roll Chamfer Shape for Four High

    The elastic deformation of roll system for CVC rolling mill is systematically analyzed using an influence function method.The distribution of contact pressure between rolls is calculated with three kinds of different chamfer shapes at the end of backup rolls and compared with that without chamfer.Optimal designs for parameters of straight step and circle chamfers are done respectively.As a

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  • Conversion to Oil Hydraulics for Improvement in Strip

    on the roll during rolling and to achieve bet-ter shape of the strip. The water hydraulic system used for roll bending system and mill auxiliary drive units at Tandem Cold Mill(TCM) of Bokaro Steel Limited(BSL) led to often failure of bending cylinders and pumps due to damage and leakage of seals. It resulted improper

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  • Analysis of flatness control capability based on the

    Oct 16 2018 · The 6-high continuously variable crown (6-h CVC) cold rolling mill shows limited capability to control coupled edge and center waves for both narrow strip and ultra-wide strip production. In

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  • COLD ROLLING TECHNOLOGY SOLUTIONS FOR COLD

    TANDEM COLD ROLLING MILLS Production capacities of tandem cold mills using coil-to-coil operation are typically in the range of 600 000 to 1 000 000 t/year. Today many of the existing batch mills are extended and modernized to continuous mode operation and new mills are installed for continuous operation right from the start.

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  • Some Basics of Rolling and Rolling MillsIspatGuru

    Roll changing deviceThis is a special device designed to attach to the neck of the roll to be removed or inserted into the rolling mills. Mill protection devicesThese are to ensure that the forces applied to the roll chocks are not of such a magnitude to fracture the roll necks or damage the housing

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  • Rolling Mill Backup Rolls Manufacturers and Kaida Roll

    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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  • READY FOR TOMORROW S MARKET Primetals Technologies

    FEATURES OF THE TANDEM COLD-ROLLING MILL. flatness results can be attributed to the patented SmartCrown flatness-control system that is highlighted by a special roll contour geometry for the intermediate and backup rolls. The system offers significant advantages in terms of profile and higher- order shape control.

    Get Price
  • Backup roll contour for edge drop control technology in

    Based on the fact that the backup roll for 2250 CVC tandem mill in hot rolling has serious and non-uniform wear and the edge spalling often happens a new backup roll contour

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  • Coupled Pickling Line Tandem Cold Mill

    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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  • Cambering of Four High Cold Mill with the View of Reducing

    plex waves of normal four high cold mill effectively but also will reduce the contact between roller ends and minish roll consumption. This technology has created economic benefits for enterprises. Keywords Complex Waves Strip Shape Roll Contour Roll Contact Roll Consumption 1. Introduction In recent years with the rapid development of

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  • Cold Rolling Mill RollKaida Roll Group

    Add No.66 Xingwang Rd Dong an Huangli Town Changzhou China Tel 86-519-6969 5301 Fax 86-519-6969 5305 E-mail sales kdroll

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  • US6142000AMethod of operating a rolling mill for hot

    A method of operating a rolling mill for hot-rolling and cold-rolling of flat products in one or more roll stands each having two or more rolls wherein the roll gaps are regulated so as to correct the differential force between the drive side and the operator side of the roll stands while compensating the adjustment value-controlled regulation of the roll gaps which corrects the bending and

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  • DE10208389A1Rolling mill for use in tandem-type rolling

    In JP A 57-202908 and JP A 62-275508 is a (hereinafter referred to as "UC mill stand") six-stage mill stand according to the state of the rolling technology especially for a Cold rolling mill disclosed wherein the above-mentioned UC mill stand Roller bending device for applying a bending force to a Work roll and an intermediate roll and at

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  • Design and Analysis of Cold Rolling Mill Chock

    Keywords cold rolling mill work roll and back-up roll chock mill housing 3D modeling 1. Introduction Rolling mill chocks are the maximum stressed bearing component in a manufactured item and so are most liable to consistent the financial losses incurred as a result of chock failure will be far greater than the actual value of the chock.

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  • DESIGN AND OPTIMIZATION OF ROLLING MILL CHOCK

    rolling. Rolling mill configuration and four high stand of reversing cold mill are shown in figure 1 and 2 respectively. Figure 1 Rolling mill configuration 3. Types of Roll Chocks 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.

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  • Application of LVC Work Roll in Ultra-wide Hot Strip Mills

    Shape control characteristics of ultra-wide strip mill were analyzed and the result is that it has deficiencies in the aspect of shape control order to increase the shape control ability of ultra-wide hot strip mills linearly variable crown(LVC) work roll was developed.The shape adjustment ability of LVC varies linearly with strip width and its shape control performances are better than

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  • Application of Varying Contact Rolling Technology on Hot

    The principle of varying contact rolling technology is introduced.Theoretically the varying contact rolling technology can increase the transverse stiffness of loaded roll gap heighten the control effect of roll bending improve the distribution of contact force between backup roll and work roll.After long-term application on hot wide strip mills varying contact rolling technology was proved to

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  • Edge Drop Control Technology of 4-Hi Tandem Cold Rolling

    For gaining strip edge drop controllability and increasing roll grinding precision the edge drop control work roll (EDW) was developed and designed in 1700 mm tandem cold rolling mill. During the rolling trial the roll configuration between EDW and conventional backup roll didn t match well because of the large fluctuation of strip edge drop the lower shape control ability and non-uniform

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  • Taper Roll Contour Design for Edge Drop Control of Non

    The taper work roll of the 1700 mm tandem cold rolling mills had some problems in the course of using and the taper roll contour was ground difficultly and the difference between the designed contour and grinding contour was very big and the work roll and backup roll had very serious and non-uniform roll wearing and even often had roll spalling and above those problems affected the

    Get Price
  • Influence of Roll Profile Configuration on High-Strength

    According to the characteristic of high-strength strip the roll profile configuration and change of CVC tandem cold mill are analyzed. Through the establishment of FEM model the influences of three representative forms of roll profile configuration on high-strength strip flatness control in CVC cold rolling mill are compared which are conventional back-up roll / CVC intermediate roll back

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  • Edge Drop Control Technology of 4-Hi Tandem Cold Rolling

    For gaining strip edge drop controllability and increasing roll grinding precision the edge drop control work roll (EDW) was developed and designed in 1700 mm tandem cold rolling mill. During the rolling trial the roll configuration between EDW and conventional backup roll didn t match well because of the large fluctuation of strip edge drop the lower shape control ability and non-uniform

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  • A set-up model for tandem cold rolling millsScienceDirect

    Oct 24 2001 · Bryant and Spooner described the simple approach for drafting schedule in tandem cold rolling mills and reported that the key variables are roll force thermal crown and strip shape. More recently Dixit and Dixit 17 applied fuzzy set theory to obtain a reduction schedule in tandem cold rolling mill using the only one constraint of roll power.

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  • Improvement in continuously variable crown work roll

    Oct 21 2016 · A method of calculating the continuously variable crown work roll contour and the relevant constraint conditions under CVC cyclical shifting mode are proposed. The finite element model is built to calculate the roll gap crowns and the adjustment coefficients of bending force for different strip widths. Improvement in the continuously variable crown work roll contour has been implemented on

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  • Cambering of Four High Cold Mill with the View of Reducing

    plex waves of normal four high cold mill effectively but also will reduce the contact between roller ends and minish roll consumption. This technology has created economic benefits for enterprises. Keywords Complex Waves Strip Shape Roll Contour Roll Contact Roll Consumption 1. Introduction In recent years with the rapid development of

    Get Price
  • Winner s Engineering Solutions 4 High Rolling Mills

    conventional four–high mills work roll bending providing a way setting to influence strip shape and flatness within limits is considered an improvement on the rigid roll contour in conjunction with an online flatness measuring a partial automation is possible. 4- Hi Mill Specification. Special Mill Features

    Get Price
  • DESIGN AND OPTIMIZATION OF ROLLING MILL CHOCK

    rolling. Rolling mill configuration and four high stand of reversing cold mill are shown in figure 1 and 2 respectively. Figure 1 Rolling mill configuration 3. Types of Roll Chocks 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.

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