roll length in four high rolling mill

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roll length in four high rolling mill

Cold rolling mill 4-high - ANDRITZ

MACHINE 13308 Manaufacturer United Engineering USA Type Mill 4 High Rolling Mill Coil thickness 0.0078" - 0.060" (0.2-1.5 mm) Coil width Max 20" (500 mm) Line speed Max 960 fpm (300MPM) Material Stainless steel Coil Pay

mechanical engineering: Types of rolling mills

A two-high rolling mill is assumed to be used with rolls of 250 mm diameter. The elastic modulus of the roll material is taken to be 210 000 MPa and its Poisson's ratio is 0.3. The model, developed by Roychoudhury and Lenard (1984), reviewed above, is used in the computations. As implied above, different models predict different magnitudes of ...

ROLLING

KT Mill (Kobe Twelve-high Mill) is a high-performance rolling mill having the respective features of our 4-high and 20-high mills, which have excellent strip flatness functions, and corresponds to the demand of improved strip flatness. Thus, the roll arrangement of KT Mill (12-high) dominates flatness control.

What Are the Types of Rolling Mill Roll?

Jan 09, 2017· Before dual motor drives, rolls had to be ground the same diameter. If one roll needs to be ground, the opposing roll must be ground at the same diameter. Four-high mills are very common for steel, aluminum, copper, and any high production metal rolling. One disadvantage of a 4-high mill is that the edges of the material tend to elongate.

4-High Rolling Mill ( Cold Mills) - Industry News - Hani Tech

A multi-high rolling mill comprising work rolls and back-up rolls, in which at least one of said rolls is a variable crown roll having the extent of crowning controlled by a pressure medium (Fig. 1).

1. Multi-High Mills (KT/KST Mill) || KOBE STEEL, LTD.

In bar and wire rod mills, rolling procedures featuring three-and four-roll technologies are state-of-the-art to produce high-quality long products.

Roll Separating Force - an overview | ScienceDirect Topics

Four High Rolling Mills: In this type of mill, there are four parallel rolls one by another. In this operation, the rotation of the first and the fourth rolls take place in the …

4 High Rolling Mills for sale, New & Used | MachineSales

• Roll Force: F= LwY avg •Roll-strip contact length L •Contact length •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 ...

4-High rolling mill - , Ltd.

Nov 28, 2016· A 4-high rolling mill can be a small mill or a stand-alone, high torque, high reduction mill. A typical reversing mill has a quick change roll system. Four-high mills can be equipped with roll bend and shape control, a precision consistent product. Old 4-high cold rolling mills can be upgraded.

Rolling Process: Working, Application, Defects, Type of ...

That produce high rate of production more than rate of production more than two high roll methods. This three high rolling mill used to billet rolling, blooming or finish rolling. 4 high rolling mill: 4 high rolling mill diagram. That rolling mill having four horizontal rolls, which two rolls are small diameter and another two rolls are larger ...

Abnormalities and Failures of Rolling Mill Rolls – IspatGuru

Stainless Steel copper aluminum four high cold Rolling Mill . 1. Product description. 4-hi rolling mill is similar with the plate rolling mill,but strip metal is much thinner than the metal plate, so the strip is coiled generally, the strip of steel or aluminium have the similar use with the steel or aluminium plate .. The following technical parameter is just for reference.

Rolling (metalworking) - Wikipedia

AGC 4-hi rolling mill control accuracy, especially suitable for high precision cold-rolled strip production. Production line process Front coiler→(Unloading car)→Machine front device→ 4-hi main rolling mil→ Machine after the device→After the coiler (Unloading car)→according demands to arrange the uncoiler, Starting straightening ...

Roll Pass Design Methods for Three- and Four-Roll Rolling ...

Modern four-high mills all set corresponding offset value [1, 2], such as 2050 CVC four-high rolling mill and 4300-medium plate mill of the German SMS, four-roll rolling mill of the British DAVY, 1580-pair cross four-high rolling mill of Japan Mitsubishi heavy industries. But these modern four-high mills with offset all have roller parallel ...

The numerical analysis of roll deflection during plate rolling

May 02, 2017· Tandem rolling is also known as continuous rolling in which two or more set of four high rolling mill arranged in a series in which each set is called stand. These stands are arranged so they can roll the work piece in decreasing cross section. It is used for rolling …

ROLLING

• Roll Force: F= LwY avg •Roll-strip contact length L •Contact length •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 ...

What are main Types of Rolling mill? - mech4study

The heart of the temper mill is the cold rolling mill stand which produces the temper pass. It will include electric powered drive motors and speed reduction gearing suited to the process desired. The design of the rolling mill can be a 2-high or 4-high (even 6-high in some cases). The mill stand can be work roll driven or back up roll driven.

EPA1 - Rolling mill using variable crown roll ...

Dec 29, 1992· 9. A 4-high rolling mill according to claim 8, wherein "n" is between 2.0 to 2.5. 10. A 4-high rolling mill according to claim 8, wherein a maximum shift amount of said roll shift device is about 1/2 of the difference between a maximum and a minimum width of the material to be rolled. 11.

The numerical analysis of roll deflection during plate rolling

Wuxi Enhancing Technology Co., Ltd.'s four roll & six roll reversing rolling mill include uncoiler, hydraulic loading and unloading trolley, 5 roller pinch leveler, entrance and exit platform, rolling mill, left and right recoilers, joint gear box, hydraulic AGC and bending roll system, driving motor, electric control system, equipment lubrication system and process lubrication system, etc.

4 High Rolling Mill - Element

Stainless Steel copper aluminum four high cold Rolling Mill . 1. Product description. 4-hi rolling mill is similar with the plate rolling mill,but strip metal is much thinner than the metal plate, so the strip is coiled generally, the strip of steel or aluminium have the similar use with the steel or aluminium plate .. The following technical parameter is just for reference.

Winner's Engineering Solutions | 4 High Rolling Mills

In order to analyze the influence of technical parameters on work roll axial force of four-high continuous variable crown (CVC) mill, the deformation analyzing model with top roll system and strip was established based on influence function method. Then a CVC work roll curve designing scheme was proposed and it was carried out on some cold rolling mill considering the requirement of ...

4-Hi Rolling Mill – Hani Tech

Jun 01, 2006· In modern four-high rolling mills, adjusting the shape of the roll face by changing the temperature along its length is avoided; on the other hand, in two-high hot rolling mills, the rolls are heated up with torches, which compensates for the contour convexity caused by the temperature increase, and the elastic deformation of the rolls caused ...

Types of Rolling Mills | Metallurgy

It is a special type of four high rolling mill in which each of the two working rolls is backup by two or more of the larger backup rolls for rolling hard in materials. It may be necessary to employ work rolls of a very small diameter but of considerable length. In such cases adequate of the working rolls can be obtained by using a cluster mill.

Development of Cluster Mill Simulator for Thin Strip and ...

Jun 09, 2017· Rolling of Steel in small and medium sized Rolling Mills. satyendra; June 9, 2017; 0 Comments ; Cololing bed, fly wheel, guide, Mill drive, roll stand, rolling mill, Rolling stock, rolls, Three high stand, Two high stand,; Rolling of Steel in small and medium sized Rolling Mills

USA - Roll-changing means for four-high rolling ...

Multi-High Rolling Mill: The multi-high rolling mill consists of two small diameter working rolls, a row of intermediate driving rolls, and a raw of backup rolls. This arrangement involves a cluster of either 12 or 20 rolls, resulting in exceptional rigidity of the whole roll system.

rolling operation or roll mill its types and application ...

(3) The shore hardness of hard surface roll is about 60 ~ 85, which is used for roughing mill of thin plate, medium plate, medium section steel and small section steel mill and the support roll of four high rolling mill. (4) The shore hardness of super hard roll is about 85 ~ 100, which is used in cold rolling mill.