Back Up Mill Roll

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Work roll: Max. Dia. 1600mm; Max. Barrel length 6500mm. Max weight 85t/pc. Others: as per customer's requirement. Forged Roll & Ring : Work roll for Cold Rolling mill: Max. Dia. 1100mm . Max weight 25t/pc. Work roll for Hot Rolling mill: Max. Dia. 1600mm . Max weight 75t/pc. Backup roll for Hot Rolling mill: Max. Dia. 2000mm . Max weight 75t/pc


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 Paper Mill, Roll Makers, Other Special Applications For all roll and mill sizes CNC ROLL GRINDERS STEEL, ALUMINIUM, COPPER, SPECIAL ALLOYS


Psrolls - We are manufacturer of rolls and roll assemblies complete with bearing assemblies & other components manufacturing. cold mill rolls, work rolls, backup rolls, backup rolls sleeves, induction hardened rolls. rolls for cold rolling mills, hi rolls, hi rolls, skin pass rolling mill work roll, drive rolls, cold rolling mill rolls, cluster ...


SMS group Inc. expertly maintains and repairs rolling mill Oil Film Bearing Back Up Roll (BUR) Chocks as well as Roller Bearing BUR Chocks & Work Roll (WR) Chocks for many of the major steel producers globally. As part of our Fleet Management process, we provide turnkey maintenance solutions for entire rolling mill chock fleets.


A work roll is a core part of a rolling mill that enters into direct contact with rolling material to make cold rolled carbon sheets (CR) of the desired thickness. Back Up Roll A backup roll is the largest and heaviest roll used in rolling mills, and delivers pressure to and supports the work roll. Read More


Forged Steel Back Up Roll Definition. The forged back up roll is a mill roll that supports the work roll and intermediate roll for the purpose of avoiding deflection of the work roll and affecting on the yield and quality of the plate and strip rolling mill. This is the key function of back up roll to ensure the operation of the whole rolling mill. The common materials are 9Cr2Mo, 86CrMoV7 ...


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. Bottom Back Up Roll Chock Figure [3] Roll chocks Figure [2] Four high stand of reversing cold mill 4. Design of chocks The housing of a work roll or backup roll bearing is known as chock.


multi-roll mills. The bearings which are used for multi-roll mill backup rolls are attached to the rolls on 1 shaft and the bearings outer diameter are fit closely to the intermediate roll which rotates while loading the rolling component force. Therefore, the outer ring must be fabricated hav ing suf ficient rigidity


VCR back-up roll and negative work roll contour design for solving roll spalling and transfer bar profile problems in hot strip mill Since the invention of VCR in the 1980s, it has been widely used on back-up rolls in cold strip mills in China.22 However, its application on a hot strip mill back-up roll is still under development, and much work…


This paper roll clamp with a capacity of 6,000 pounds is used as roll lifting equipment by a major paper mill. Back Up Roll and Chock Lifter. This custom designed motorized back up roll and chock lifter was designed to simplify the process of removing or installing the backup roll assemblies into or out of a rolling mill at a major North ...


Back up roll for rolling mill. Min. Order: 1 Piece/Pieces Model No.: TAIGOO66062 Transportation: Ocean Back up roll for rolling mill Application work roll intermediate roll and back up roll for cold rolling mill hot rolling mill Material Back up roll Cr2 Cr3 Cr5 60CrMo 60CrMnMo etc Work roll 9Cr2Mo 9Cr3Mo MC3 MC5 etc Intermediate rolls 9Cr2Mo 9Cr3Mo MC3 MC5 etc Tensile strength N mm 350 Neck ...


Planetary mill roll configuration – In this type of roll configuration, there are a pair of heavy back-up rolls surrounded by a large number of planetary rolls. Each planetary roll gives an almost constant reduction to the feed material as it sweeps out of a circular path between the backup roll and the feed material.


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 ...


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


Master Roll Manufacturing has been producing and reconditioning a variety of steel work rolls, backup bearings, arbors, and mandrels for the coil and toll processing industries for over 20 years. Our team of metal working professionals have over 100 years of combined industry experience.


NEW BACKUP ROLL GRADE FOR SKIN PASS MILLS* remarkably reduced roll wear while operating with textured work rolls. In the meantime several successful trials have been made with this new roll grade on different Skin Pass Mills. As a result the performance of back-up roll and thus availability of mill will be improved while specific costs for mill ...


Applications: plate mills, hot-strip mills, cold-rolling mills Description: Backup rolls weighing 7-90 tones made of alloy-forged steel with Cr content of 1,40-5,50% have an excellent combination of metallurgical and physical properties such as a compact porosity-free microstructure; good ductility and toughness values; high resistance to fatigue, wear and thermal cracking.


New rolling mill designs Roll stand back-up rollers are precision machine elements that give optimum functioning and achieve their maximum operating only if they are precisely matched to the application. When new enquiries are received for roll stand back-up rollers, a wide range of technical data are therefore required in order


Roll-gap Control is performed by the hydraulic cylinder connected to a wedge built in the rear side of the back-up rolls of the lower housing. Mill housing receives rolling load directly through the wedge, so that a high-rigidity hydraulic push-up is possible.


Stand and roll guide set-up. The goal of mill and the roll guide setup is to get the first bar rolled when changing product, on the cooling bed within the tolerance so that it is a saleable ...


the back-up rolls of 4-HI mills. Figure 5 shows the roll load and current fillet radius detail. Mill design attributes Mill type: 2-HI mill Roll barrel diameter: 990 mm Barrel width: 2180 mm Roll neck diameter: 595 mm Roll neck to barrel ratio: 60 percent Screw-down distance: 2980 mm Roll body material: Steel Young's modulus: 210000 MPa


The new roll grade ASTI90X ac hieved following performance increase in a 58 Inch. two stand Skin-Pass Mill (DCR Mill) for Tinplate, working with wet skin pass. agent: with 5% Cr backup roll ...


The WHEMCO companies in Pennsylvania and Ohio, USA manufacture a full range of mill rolls – spun cast iron, cast steel and forged steel. We manufacture both cast and forged rolls for the most flat hot and cold rolling applications. We are now the sole producer of both cast work rolls and backup rolls in …


If the cold mill rolls or hot mill coils have too little crown, the mills will roll out the edges and create edge wave (see Figure 9). This is fairly common in mill master coils. Mill work rolls and backup rolls bend and compress under the vertical loads it takes to reduce plate or sheet coil thickness.


The cluster mill stand has two work rolls and four or more backup rolls. The number of backup or supporting-rolls depends upon the amount of support needed for the work (small diameter) rolls. Cluster mill is normally used in cold-rolling operation. The …


Forged Steel Back Up Roll Definition. The forged back up roll is a mill roll that supports the work roll and intermediate roll for the purpose of avoiding deflection of the work roll and affecting on the yield and quality of the plate and strip rolling mill. …


the backup roll, and converges to the mill housing. ... natural crown reduction will be saturated as the back up roll gets larger, which indicates that increment of the backup roll may not be a.


Cluster rolling mill A cluster rolling mill is a special type of four-high rolling mill in which each of the two working rolls is backed up by two or more of the larger backup rolls which are able to roll hard materials. It may be necessary to employ rolls of a very small diameter but of considerable length to achieve the desired outcome.


Contact US. United Gear Works can rebuild and recondition, back to O.E.M Specifications even if rolls are chipped, gouged, or just worn down from wear. United Gear Works is specialize in repairing of a series of large mill rolls used in their steel processing operation. We use a multi-step procedure for the reconstruction of the mill rolls.


In the planetary mill type of rolling machine, a large backup roller is surrounded by a number of planetary working rollers as shown in the figure. Each planetary roll gives a continuous reduction. It is employed to reduce large thicknesses in a single pass of a steel strip.


Because the backup rolls are expensive, manufacturing cycle & service cycle is long, and it is difficult to inspect the roll surface in a service cycle, so the management of the backup rolls is very important. At present, many grinding shop installed the eddy …


The disclosure of this invention relates to a rolling mill wherein the chocks of the work roll on the drive side of the mill are split to enable the work rolls to be removed and replaced while strip is still being passed between the rolls. The chocks of the work rolls on the operating side are nested. The work roll chocks are provided with wheels which, during the roll changing operation, are ...


It represents the 5% of the direct cost of a strip sheet rolling mill and 10% including the operation of the roll workshop. Cost of no-quality: The inlaid calamine because of the roll represents 150 000 € up to 450 000 € /year depending on the type of Hot Strip Rolling Mill. Productivity:


FB-5. 3%Cr Steel. Tandem Mill Back Up Roll. Reversing Mill Back Up Roll. General Use. FB-7. 5%Cr Steel. Tandem Mill Back Up Roll. Reversing Mill Back Up Roll.


Forged Steel Backup Rolls. Description: Backup rolls weighing 7-90 tones made of alloy-forged steel with Cr content of 1,40-5,50% have an excellent combination of metallurgical and physical properties such as a compact porosity-free microstructure; good ductility and toughness values; high resistance to fatigue, wear and thermal cracking.


Our latest developments of Forged Back Up Rolls offer higher performances than Cast Back Up Rolls. The structural homogeneity of these products enables an increase in hardness, as well as a high level of resistance, guaranteeing higher performances in the mill. Brochures and manuals: Sidenor Forgings and Castings Brochure (English-spanish) ...