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    (PDF) Mathematical modelling of roll wear in a tandem mill,Each stand has four rolls, two of them are the work rolls and are in direct contact with the steel slab (kept ~1,000ºC at the entrance and 800ºC at the mill exit), and two backup rolls in contact with the work rolls ,

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  • Rolling (metalworking) Wikipedia

    A tandem mill is a special type of modern rolling mill where rolling is done in one pass. In a traditional rolling mill rolling is done in several passes, but in tandem mill there are several stands (>=2 stands) and reductions take place successively. The number of stands ranges from 2 to 18. Tandem mills can be either of hot or cold rolling

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    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. This is how roll-neck bearings contribute

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    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 barrel is 350~1800mm. The material of back

  • Analysis of Chatter in Tandem Cold Rolling Mills

    backup rolls and torsion vibration of the drive system are the examples.1,2) The most likely instability caused in tan-dem cold rolling mills is due to vertical oscillations of rolls, and the typical frequency of chatter ranges from 150 to 250Hz. Also, it has been recognised to have close relation with friction conditions in roll bites.

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    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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    Figure 1. Hardness range of common Cold Mill backup roll grades. 3.3 Properties of ASTI90X During the development of the new backup roll grade for the Skin-Pass and Cold Rolling applications the main focus was on wear and consequently shape stability, but the other important physical properties need to be controlled as well. The

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  • Rolling process animation || Rolling mill machine concept

    2017-10-18· Tandem rolling mill Let us discuss all the rolling mills one by one. First is two high rolling mill. This is the simplest type of rolling mill setup, in which two rollers are used. The distance

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  • The First Sendzimir Tandem Mill

    The roll separating force on the 1-2-3-4 mill is distributed from the work rolls to the intermediate rolls and then to the backup shafts in such a fashion that the outer shaft takes a heavier force component, i.e., absorbs more load than the center shafts. The driven rolls in the mill are the outer second intermediate rolls. The choice of

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    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

  • Tandem Cold Mill Scientific.Net

    The friction coefficient model is built according to rolling speed and rolled length of the roll. The rolling force and the roll flatten radius are calculated with the iterative method. These models are used for online process control of one five-stand tandem cold mill. Comparing the calculation result and the actual data, the precision of the

  • tandem mill weirton backup rolls Grinding Mill China

    Best Practice : Cold Roll Weirton Steel Corporation (now Mittal . Best Practice : Cold Roll Weirton Steel Corporation (WSC) suffered a major production setback in April 1994 when its #9 Tandem Mill caught fire and burned out » More detailed! Backup Roll for Cold and Hot Rolling Mill: Hitachi Metals America. Tandem Mill Back Up Roll Reversing Mill Back Up Roll General Use

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    A rolling mill for rolling strip in which one of its rolls serves both as a mill roll and as a gauge and/or profile measuring roll. The one roll has an outer sleeve for deflection under the rolling force and an internal stationary member for carrying a number of axially supported sensors for measuring the deflection of the sleeve and the rolling force to which the sleeve is subject, and

  • Strip Thickness Control of Cold Rolling Mill with Roll

    roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand. Figure 3. depicts the effects of eccentricity on the output strip thickness [6]. When the entry strip is passed through the roll

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    Weirton Steel Hometown Steubenville, Ohio 43952 Rated 4.9 based on 35 Reviews "My grandfather, aunts and uncles all worked at the mill. I spent many...