tandem mill back up rolls

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  • 811. Frequency analysis of chatter vibrations in tandem ...

    Apr 21 1987· 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 . Back up Rolls hktxgy

  • cold mill rolls in nigeria

    Figure 19: Trials (T1-5) of forged HSS work rolls in the first two stands of a 5-stand cold rolling tandem mill (steel grades: H300LA and MBW 1500, HSS = forged High Speed Steel rolls, SSt (HV) = standard

  • tandem mill back up rolls in valparaiso

    Back Up Roll Mill Rolls Manufacturer 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 backup roll is mainly used in 4Hi mill and 6Hi mill The diameter of roll

  • milling tandem rollers

    backup roll is the most significant one. It is demonstrated that the upper backup roll and top ... Two-stand tandem mill unit of Mobarakeh Steel Company Incoming coils of this unit are often 2 mm in thickness. They open up and pass through two 4-high stands two or three times. Usually thicknesses of the strip were reduced by 60 to 90

  • Mathematical modelling of roll wear in a tandem mill hot ...

    Jan 01, 2013· Table 1 Fabrication process, alloys, and mechanical properties of the rolls used in the hot rolling process Hot mill F1 F2 F3 F4 F5 F6 X X X X X X X X X X X X Application Back up roll Back up roll Work roll Work roll Young's modulus (MPa) 195 200 220 180 Poisson modulus 0.290 0.300 0.295 0.280 Material Cast steel Forged steel High chromium ...

  • Aurubis Buffalo

    The back-up rolls could also be . ... The NO.3 tandem cold mill in KSC's Chiba Works is well known for its multi-purpose characteristics in rolling worthy products such as stainless steels and ...

  • Aurubis Buffalo

    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 …

  • REVERSING COLD MILL - Primetals Technologies

    Title of Invention: A STEPLESS CONTROL SYSTEM FOR ROLL BENDING AT FINISHING STAND OF TANDEM MILL. Abstract: A control system adapted for roll bending and roll balancing and controlling the shape and flatness of the rolled strips and comprises plurality of cylinder means (13) located at the top of each bottom work roll chock, means (10) operatively connected to the said cylinder means (13) …

  • tandem mill weirton backup rolls

    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 1980-1981. Machinist Tom Shultz measures roll with a micrometer prior to grinding.

  • (PDF) Analysis of Spalling in Roughing Mill Backup Rolls ...

    Apr 21 1987· 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 . Back up Rolls hktxgy

  • Stability Analysis of a Nonlinear Coupled Vibration Model ...

    Forged Cold Mill Rolls Xtek is known throughout the North American steel industry as a leading supplier of high quality forged steel work rolls for flat rolling cold tandem and temper mills Xtek makes rolls in the range of 12″ to 28″ body diameter and 20″ to 100″ body length

  • Analysis of Chatter in Tandem Cold Rolling Mills

    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. Sugar Milling Tandem Capacity. Mill Capacity Calculations. There are a large number of formulae for the calculation of the capacity of a milling tandem.

  • Rolling (metalworking) - Wikipedia

    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 ...

  • Indian Patents. 211265:A STEPLESS CONTROL SYSTEM FOR ROLL ...

    Nov 17, 2005· 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.

  • Premature failure analysis of forged cold back-up roll in ...

    Tandem Mill Back Up Rolls In Valparaiso. This industry comprises establishments primarily engaged in one or more of the following 1 manufacturing metal kitchen cookware except those manufactured by casting e.g., cast iron skillets or stamped without further fabrication, utensils, andor nonprecious and precious plated metal cutlery and flatware ...

  • tandem mill weirton backup rolls

    Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips. In most mill vibration models, either the roll mass is usually limited to vibrate in vertical direction and vertical-horizontal directions, or the multiple rolls system is simplified to a single mass system. However, the torsional chatter is also a typical type of mill chatter, and the ...

  • milling tandem rollers

    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. Sugar Milling Tandem Capacity. Mill Capacity Calculations. There are a large number of formulae for the calculation of the capacity of a milling tandem.

  • Steel - Forming of steel | Britannica

    Due to the reversing rolling passes, production efficiency is lower than that of a tandem mill. However, because the rolling parameters can be quickly changed for each coil, reversing cold mills are especially suitable for the small-lot production of various product types. The size of the mill equipment is also smaller, which allows easier ...

  • (PDF) VIBRATION MONITORING OF TANDEM MILLS AT THE …

    Forged Cold Mill Rolls Xtek is known throughout the North American steel industry as a leading supplier of high quality forged steel work rolls for flat rolling cold tandem and temper mills Xtek makes rolls in the range of 12″ to 28″ body diameter and 20″ to 100″ body length

  • Tandem Cold Mill | Scientific.Net

    Abstract: According to the chatter phenomenon of 3 rd stand of a steelworks six-roller tandem cold mill (TCM), vertical vibration of tandem cold mill was simplified to eight degrees of asymmetric freedom mass-spring system. Virtual prototype model on vertical vibration of tandem cold mill was established and natural frequencies and main vibration mode of mill were solved by using automatic ...

  • backup roll contour of a stcrown tandem cold rolling mill

    Tandem mill rolls can be produced up to a maximum weight of 60 tonn The maximum finished weight limit for plate mill rolls is 170 tonn Tandem mill back-up roll can be supplied with barrel hardness levels within the range 55 to 75 Shore C Surface hardness is constant throughout the working life of the roll.

  • Tandem Mill Back Up Rolls In Valparaiso

    Title of Invention: A STEPLESS CONTROL SYSTEM FOR ROLL BENDING AT FINISHING STAND OF TANDEM MILL. Abstract: A control system adapted for roll bending and roll balancing and controlling the shape and flatness of the rolled strips and comprises plurality of cylinder means (13) located at the top of each bottom work roll chock, means (10) operatively connected to the said cylinder means (13) …

  • Rolling Mill Backup Rolls Manufacturers and Suppliers ...

    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.

  • Tandem cold mills (Steel) | SMS group

    The mill stand can be work roll driven or back up roll driven. The mill can be designed with hydraulic work roll bending or back up roll bending. Installations typically have a single rolling mill stand, but may have two. Pinch rolls provide back tension for the pay off reel in the entry section and entry and exit tension for the temper pass.

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