The work rolls in four-high strip mills and the rolls in two-high light-section and wire rod mills are mostly fitted with angular contact ball bearings as axial bearings. The chock arranged on the drive end is not axially located in the roll stand, but is guided on the roll neck by the axial bearing.

A Foil Rolling Mill rolls, in subsequent long passes(due to the relative thin material), coiled strip (coiled on steel spool) from a thickness of up to 0.6 mm (coming from Cold rolling Mill) down to 2 x 5 µm; the mill is designed in order to roll in closed gap.

Aluminum foil roll with high-precision, long service-life and high hardness and 1930 width Diameter: max ȹ 1500mm Length: max 8000mm Weight: max 60 ton 2%Cr, 3%Cr and 5%c steel as well as forged semi high speed steel Applied for …

Thickness in Foil Mill 0.6 mm Max. Mill speed range 100 m/p/m to 1400 m/p/m. Output: Thickness in Coil Mill Min. 0.120 mm. Thickness in Foil Mill Min. 0.006 mm. Mill Features: Separated Coil built-up line. Hydraulic operated coil car for loading& unloading coils. Hydraulic screw down system with gauge control & pass schedule.

This roll cluster enables the Z-mill to apply a greater roll pressure without roll bending than an H-mill. Apart from differences in tooling, both H-mills and Z-mills operate in a similar manner. The operator can vary the screw down force applied by the work rolls, and the tension applied by the coil pay-off and take-up winders to achieve the ...

the design opti mization of work roll chock and backup Roll chock in cold rollin g mill, to control the failure o f choke in the cold rolling mill for retain the material cost and longer life of ...

Pomini Tenova has been contracted by JW Aluminum to supply a roll grinding machine for work rolls and back-up rolls, a chock changer for work rolls and back-up rolls and a chock tilter for its expansion plant at Goose Creek, South Carolina (USA).. Within its aim to increase its production in South Carolina plant with the installation of proven, state-of-the-art equipment utilizing green ...

Roll changing devices - use of an overhead crane and a unit designed to attach to the neck of the roll to be removed from or inserted into the mill. Mill protection devices - to ensure that forces applied to the backup roll chocks are not of such a magnitude to fracture the roll necks or damage the mill housing .

Abstract： ANSTMCTAt the present, the large high-sPeed precise aluminum foil mills all over theworld are in open（clearance） restrain condition because their comPlicated rollSystems contain gaPs, Which exist between beedng chock and house windows,intemal ring and outer ring of bearing, convex lug of beedng chock and stop p1ate,and so on. . Consequentiy severe …

Improved support means for the lateral support roll assemblies of a six-high rolling mill of the type having a pair of housings, a pair of vertically in-line work rolls, vertically in-line back-up rolls, intermediate in-line rolls located between the work and back-up rolls, a lateral support roll on each side of each work roll and a support roller assembly for each of the lateral support rolls.

natural crowns of the 2-hi mill with the assigned work roll information. The natural crowns of five 4-hi mills are also calculated using. ... The backup roll chocks are.

WORLDWIDE LEADER IN BEARINGS AND STEEL Rolling Mill Industry Training Configurations & Designs Key Points for CRB Back-Up Roll Bearings: • Inner Races Stay with Rolls • Outer Assembly Stay with Chocks • Chock Assemblies Interchangeable from Roll to Roll • Inner Race OD's Can be "Skin Ground" to Extend Useful Life in the Mill ...

Back-Up & Work Chock Assembly: 2003: Fata-Huter. Inc.- USA: 4-High Mill Stand Assembly – Back-Up & Work Roll Chock Assembly: 2002: MMI(Bangladesh) S.ALAM INC: MILL Stand Assembly: 2002: Angang Steel Co., Ltd-China: Back-Up Chock Assembly (Plate Mill ) H- Horizontal&Vertical Chock Assembly Edger Chock Assembly: 2002: AMCLYDE ...

WORK ROLL CHOCK ASSEMBLY FOR A ROLLING MILL ABSTRACT OF THE DISCLOSURE A rolling mill stand has upper and lower work rolls supported in chocks which include liner plates on their side faces for bearing against the side faces of the mill stand housing, with the side faces of the chocks being shaped so that the liner plates on both the upper and lower work roll …

In order to improve the efficient and accuracy, parallel algorithm of fast multipole boundary element method (FM-BEM) was presented. Combined with sparse approximate inverse preconditioning (SPAI), GMRES(m) was used to solve the equation system of FM-BEM. The parallel FM-BEM was applied to strip cold rolling process, the results obtained from parallel …

•Roll-strip contact length L •Average strip width w –despite the fact that spreading, or an increase in width, may actually occur if edger mills are not used •Average true stress of the strip in the roll gap Y avg •Assumes no friction and thus predicts lower roll force than the actual value •Power per roll (SI units)= pFLN / 60,000 kW

work roll chock for foil mill. Z-mill - Wikipedia A Z-Mill or Sendzimir Mill is a, chock-less work roll allows for a quick roll change, while a ZR 32 can roll ultra-thin nonferrous foil down to 0. Roll neck bearings for rolling mill.

They looked for defects in the work roll bearings inner races that were likely to create similar markings to the ones experienced in the cold rolling mill, as shown in figure 3. These defects were present in all the mill work rolls and were likely created during the chocking and de-chocking operations.

38 votes, 15 comments. 105k members in the Skookum community. This sub is intended to be a place where people come to learn, or teach. (Or have a …

MILL HOUSING WORK ROLL CHOCK WORK ROLL CHOCK BACKUP ROLL CHOCK BACKUP ROLL CHOCK NEGATIVE BEND SERVO POSITIVE BEND SERVO BEND CONTROLLER MEASURED PRESSURES-VE BEND ... Single stand cold & foil mills Process Control Audits Gauge Control Flatness Control Productivity Process Engineering Services 5.

Rolling Mill Chock. Rs 10,000 / Piece Get Latest Price. With the support of our experienced professionals, we are offering exclusive quality Rolling Mill Chock. Quality is our main concern, for this we manufacture and exporter this mill chock using quality checked raw material and modern technology. The chock provided by us is highly admired in ...

Herkules dechockers are already in use for complete sets of back-up rolls at a plate mill with chocks of up to 260 tons. + Combination chock changing devices. include several platforms that are perfectly adapted to individual roll types. Both back-up rolls and work rolls can be accommodated. The combination chock changing devices are also ...

the roll bodies is accompanied by removal of the chocks. This is a demanding exercise in the case of non-separable bearings, such as spherical roller bearings, whose inner ring is fitted tightly on the roll neck. In the case of cylindrical roller bearings, the chock can be removed together with the outer ring and roller cage from the inner

Mechanics of Cold Rolling of Thin Strip 443 where yiw is the vertical deflection of the work roll at element i, gijw (, ) is the influence function for the work roll deflection due to the combined bending and shear forces generated by rolling load, giwf is the influence function for the work roll deflection due to the force generated by the roll bending mechanism, k represents the …

a rolling mill stand has upper and lower work rolls supported in chocks which include liner plates on their side faces for bearing against the side …

of the mill housing. In a four-high mill assembly, there are two pairs of work roll chocks and two pairs of backup roll chocks. The work roll assembly can …

Cluster, Foil, Cold Mills Work rolls, intermediate rolls, back-up rings Ø max. 450mm Cold & Hot Mill Work and intermediate rolls Ø max. 800mm With and without chocks Cold & Hot Mill Work, intermediate and back-up rolls Ø max. 1800mm With and without chocks Plate & Hot Mill Work rolls, back-up rolls Ø max. 2400mm + With and without chocks

The housing of a work roll or backup roll bearing is known as roll chock or simply chock. Chock is the basic part of a rolling mill. It is mounted in the window of the roll stand housing between the posts with a small clearness. …

Included with chock fleet tracking is the ability for preventative maintenance notification on individual chocks to be pulled from service. With SMS group Inc.'s OEM knowledge of mill stand mechanics, rolling mill operational issues can be identified, repaired, and corrected in a timely manner by inspection the chocks, mill stands, roll gap ...

3. Roll changing devices – use of an overhead crane and a unit designed to attach to the neck of the roll to be removed from or inserted into the mill. 4. Mill protection devices – to ensure that forces applied to the backup roll chocks are not of such a magnitude to fracture the roll necks or damage the mill housing. 5.

Marcegaglia Palini & Bertoli contracted Danieli Service to improve plate mill production in San Giorgio di Nogaro, Italy. Danieli Service provided accurate restoration of mill housing geometrical tolerances, recondition existing backup and work roll …

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.

2) Commissioning of cold rolling Mill annealing furnace and roll grinder. 3) New Product development team member for con cast material products responsible for foil stock,Closure stock, fin stock through twin roll continues cast material ( First time in India ) 4) Worked with M/s Pechiney (France) for technology transfer of rolling and casting.

FIG. 1 is a top view of a work roll exchange device according to the invention, and. FIG. 2 is a profile taken on lines A--A of FIG. 1. According to FIG. 1, a carriage 2 is arranged at the front or operator's side and thus the side opposite to the driving side of a 4-high roll frame 1. The carriage may, for example, be driven back and forth on ...

Concept of the FFC mill Shmaller work roll diameters are required to achieve higher reductions and to roll more difficult mareial such as steel foil or high strength steel because of the necessity to reduce roll separating force and driving torque. ... A reverse bending force is applied to the outer chocks from the plungers contained in backup ...