cold mill work roll

Roll chocks in Rolling Mill – IspatGuru

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. The roll stand housing encloses and supports the chock assembly.

cold rolling mill work roll - Taixi Mill Roll

cold rolling mill work roll Product Description (aluminum cast roll)The cast roller core material used 42CrMo.Roller cover material use special material: 32Cr3Mo1V.We use scientific method to design various types of …

Cold Mill Work Roll _Qingdao Yelong International Co., Ltd.

Mill Type. Application. Material. Tandem Mill & Single Stand Reversible Mill . Work Roll . Cr3/Cr5 / Cr8 Series Alloy Forged Steel . Intermediate Roll . Cr3/ Cr5 / Cr8 Series Alloy Forged Steel . Back-up Roll . Cr3/ Cr4 / Cr5 Series Alloy Forged Steel / Duplex Cast Steel . Skin Pass Work Roll . Cr3/ Cr5 / Cr8 Series Alloy Forged Steel

GENERAL ASPECTS OF ROLL COOLING FOR HOT & COLD …

In cold rolling applications roll cooling always goes along with lubricating of the roll gap, when using water-based emulsions or dispersions and rolling oil. The so-called selective roll cooling is applied mainly for cold rolling mills to control the asymmetrical flatness deviations the …

What is Cold Rolling? (with picture)

Cold rolling can be used to change the gauge of steel sheet metal. Cold rolling is a process used in manufacturing and finishing environments to change the thickness, or gauge, of metals or glass. Used mostly in steel mills, cold rolling involves threading flattened steel into a machine that advances the material through a set of rolls.

Improving Thin Strip Profile Using Work Roll Cross and ...

Currently, work roll shifting mill is the most effective mill for strip shape control [12, 13] because it improves the strip crown accuracy and edge phenomenon, as well as permitting schedule free rolling [14, 15] by changing the …

What is "Cold Rolling" Stainless Steel and Other Metals ...

How Does a Cold Rolling Mill Work? The process of cold rolling a metal alloy starts with either sheet metal or strip coil. These materials are placed into large rollers, which compress it down and squeeze it under high pressure just below its ultimate tensile strength.

Cold Mill - an overview | ScienceDirect Topics

A tandem cold rolling mill usually consists of three to five stands of rollers, each of which reduces the strip thickness by about 20 to 40% so that …

Work Roll change in a Hot Rolling Mill ( especially in a ...

Work roll latches • In the closed position, the latches are connecting the Work roll chocks with the CVC-shifting cylinder. In roll change the latches must be opened so that the work rolls (WR) can be removed from the mill stand. The top and bottom latches are driven by two (2) hydraulic cylinders.

4 HI Cold Rolling Mill 3D Walk-through - YouTube

YOGIJI DIGI sees itself as an AUTHORITY IN COLD ROLLING.We have engineered and installed wide range of cold rolling mills, skin pass mills as well as bonding...

CN101780474A - Hydraulic working roll bending device for ...

At present, in widely used 4-roller cold rolling mill, hydraulic working roll bending device is less than being equipped with, and like this, in the rolled strip process, normally comes rolled strip by the radian of artificial grinding working roll; Because the specification of rolled strip is more, the radian of pairing working roll is just different, cause the description variation of ...

(PDF) Failure Analysis of Rollers in mill stand using ...

Life of rolls in a cold rolling mill in a The roll maker should ensure good mould steel plant operation versus manufacture. condition and coating preparation and avoid Eng Fail Anal 2000;7:55–67 excessive vibration of the mould during spin casting.

Selection of Work Roll Diameter for Cold Rolling Mill ...

Selection of Work Roll Diameter for Cold Rolling Mill. The work roll diameter is a very important factor which influences the overall specifications of rolling equipment. A number of studies have been reported in the past on the selection of the most suitable diameter. Here we have taken up this problem in consideration of more recent ...

Minimising skidding in cold rolling

The mill parameters that affect friction in the roll bite are investigated, as well as the effective methods to control the roll bite friction as a means of eliminating skidding in cold strip rolling.

REVERSING COLD MILLS - SMSgroup

tal Stabilization), plus work-roll and inter-mediate-roll bending for excellent surface and flatness qualities as well as minimal thickness tolerances. What stood out here was the short project handling time of just 18 months from contract signing to the first coil. KYCR COIL INDUSTRIES, Bangladesh SMS group Cold rolling mills 10 Reversing cold ...

Cold Mill De-Chocker | Machine Concepts

Cold Mill De-Chocker | Machine Concepts De-chockers support mill back-up or work rolls on the O.D. or at the neck of the roll. Bearing chock support stands are raised to support the roll chocks allowing removal of the retaining rings and bearing containment components. Once disassembled the bearing chocks are separated from the roll journals.

Cold Rolling – Process Overview - Matmatch

Modern, efficient cold rolling mills can roll pickled sheets or strips at speeds of up to 4 m/s and tandem mills that are continuously working can produce up to 2.5 million tons of cold rolled steel annually. The advantages of cold rolling. Cold rolled products have the following advantages over hot rolled: greater dimensional accuracy

Mechanics of Cold Rolling of Thin Strip

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 …

CUTTING-EDGE COLD-ROLLING MILLS | Primetals Technologies

The most common configuration is the single reversing mill. Various mill designs are offered that include 6-high UCMs (Universal Crown Control Mill), ZR mills and 12-high cold-rolling mills with small-diameter work rolls for the efficient rolling of materials of high hardness.

EXAMPLE 2 MECHANISM

Evidence of fire cracking on the surface of a spall from a cold mill work roll. MECHANISM A bruised area (see Roll Surface Indications - Bruise) is the first stage for the generation of a fire crack. Non-uniform stress within the bruise is created as the re-tempered martensite contracts from the surrounding roll material.

Forged Steel Roll - Back Up Roll For Rolling Mill | TINVO

Cold Rolling Mill. The back up roll and work roll can be used for cold rolling mill. The forged rolls are produced by steel-making, refining and forging. A homogenous highly dispersed structure provides mechanical properties of the internal layer for complicated heat treatment. It becomes easier for exceptional performance by using the forged ...

MBI Rolls

60 ~ 65 HSC. Forged Shaft. 42CrMo, 36CrNiMo4. 35 ~ 45 HSC. MBI Rolls, a division of M. Brashem, Inc., has provided the best value for quality, price and service to the steel industry for more than 30 years. We are a leading distributor of mill rolls to the north American steel mill industry, with significant share of the long bar market.

Forged Cold Mill Rolls | Xtek, Inc.

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. Xtek uses only the highest quality vacuum degassed clean ...

Cold Rolling Grinding | TENOVA

Pomini Tenova is the worldwide leader in the design and supply of Roll Grinders for flat product Rolling mills as well as of special machines for grinding of heavy components. Technical Excellence Wide range of machine capacities: from small …

Fundamentals of Roll Cooling and Control of Flatness at ...

roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product. Roll Bite temperatures in slower heavily drafted stands can peak in the region of 300oC, diminishing with the

Product > work roll for cold continuous rolling mill_WISCO ...

Cold rolling roll type: Material: （mm）Barrel length(mm) （mm）Diameter of barrel(mm) （mm）Full length of roll(mm) Work roll for cold rolling: Cr2、Cr3、4CrMo、Cr5、: ≤3000: ≤1600: ≤6000: Intermediate roll for cold rolling: Cr2 ...

Rolling of Metals

Rolled Metal Characteristics • Residual stresses • Dimensional tolerances for cold-rolled sheet thicknesses +/- 0.1 mm to 0.35 mm (0.004 to 0.014 inch) • Flatness tolerances to within +/- 15 mm/m (3/16 inch/foot) for cold rolling, +/- 55 mm/m (5/8 inch/foot) for hot rolling • Hot rolling and sand casting produce similar ranges for

GENERAL ASPECTS OF ROLL COOLING FOR HOT & COLD …

rolling mill, dedicated roll cooling systems are required to fulfill the required functions. Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to control the flatness of the strip in cold rolling mills.

Rolls-Forged Rolls-Cold Mill Rolls - Metals

8 FH-11. 3% Cr Steel. Tandem Mill Work Roll. Reversing Mill Work Roll. Skinpass Mill …

New Rolling Method R f Reversing Cold Rolling Mill

Outline of reversing cold rolling mill and rolling method As illustrated in Figure 1, a reversing cold rolling mill is structured mainly of a mill proper, a winding machine (pay-off ree l), an entry winding machine (tension reel) and a delivery-winding machine (tension reel).

Hot and Cold Rolling Mill Chock Fleet Management - SMSgroup

Hot and Cold Rolling Mill Chock Fleet Management. 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

Hot and cold rolling mill equipment rebuild at ANDRITZ ...

Roll change rigs. ANDRITZ Herr-Voss Stamco provides engineering and supply of new or upgraded roll change equipment for rolling mills. Mill types included are skin pass, temper, hot and cold rolling mills. Mill configurations include 2 High, 4 High and 6 High. Styles that are provided are as follows: Porter bar.

Basics of Rolling of Steel – IspatGuru

Cluster mill or Sendzimir mill stand – In this rolling mill stand, each of the work rolls is supported by two backing rolls. Cluster mill and Sendzimir mill are used for rolling thin strips of high strength materials and foils [0.0025 mm thick]. The work roll in these mills can be as small as 6 mm diameter – made of tungsten carbide.

Edge drop control of a taper roll during continuous cold ...

By using the U-EDC work roll contour which was self-designed and used to edge drop control for the UCM cold rolling mill, a remarkable production result was …

grinder for cold rerolling mills

Cold rolling mills need regular work roll changes to ensure continued high performance.. Usually, this operation is time-consuming and involves dangerous manual labour. We have developed a robotic roll changer that can automatically replace any type of rolls, speed up the cylinder change rate and avoid any safety risk.

Hard chrome plating of work rolls for cold rolling and ...

"Hard chrome plating of work rolls for cold rolling and skin-pass" 2002. Q. My steel company intends to install a new state-of-the-art hard chrome plating plant for plating of work rolls of cold rolling and skin-pass mills. Material to be processed: Carbon and alloy steel oiled rolls.