roll length in four high rolling mill

Arrangement for adjusting the roll gap in rolling mill ...

1992-9-1 · We claim: 1. In an arrangement for adjusting a roll gap in a rolling mill stand for hot or cold rolling, the arrangement including at least two hydraulic adjusting cylinders which act through chocks from both sides on a work roll to be adjusted, each adjusting cylinder having two or more piston surfaces, and including means for applying pressure medium to one of the piston surfaces ...

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Cold rolling mill 4-high

The 4-high mill is equipped with positive and negative work roll bending in order to influence the shape and the flatness of the strip. Either the work roll or the back-up roll is driven, depending on customer requirements. The diameter of the 4-high work rolls amounts to approximately 1:4 in relation to the barrel length.

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Roll Neck Bearing Mounting of a Single-Way Four-High …

2019-5-24 · Roll Neck Bearing Mounting of a Single-Way Four-High Cold Rolling Mill for Aluminium Examples of Applications Engineering WL 17 505 EA Operating Data Back-up Rolls Roll diameter 1 525 mm Roll body length 2 500 mm Work Rolls Roll diameter 600 mm Roll body length 2 500 mm Rolling load max. 26 000 kN Rolling speed max. 1 260 m/min Bearing Arrangement

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Technical Article Rolling Mills Revamp

contribute to many of the roll neck failures that occur in 2-HI mill work rolls or 4-HI mill back-up rolls. As a consequence, the market is demanding a rolling mills revamp to mitigate roll neck breakage in the fillet ring area under severe loading conditions. The choice of bearing selection can play an important and

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COMPARISON OF ROLL DEFORMATION IN 4HI ROLLING …

2016-3-12 · The Rolling mill roll deformation is a serious problem and directly impact ... and are the customers of above mentioned Roll Manufacturing Companies. The four sections are namely 1. Deformation due to Thermal Stress. ... T = Tension at outlet section of the mill. 2. A = Area of contact of sheet and work roll. 3. = Projected length of arc of ...

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The Planetary Rolling Mill

2016-7-14 · to relate material properties to the planetary rolling process. The Planetary Mill is a medium output mill for rolling of steel strip. Its output is less than continuous mills of many stands but more than the reversing tw·o-high or the three-high mill. This mill can be used to roll all metals but it is

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Relationship between chatter marks and rolling force ...

2015-9-1 · The vibration characteristics of a twenty-high roll mill and the rolling force fluctuation characteristics were measured with serious chatter marks on the surface of the steel strip. Fig. 10 shows the obvious chatter marks on the surface of the steel strip. Download : Download high-res image (39KB) Download : Download full-size image; Fig. 10 ...

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

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 ...

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Impact Analysis of Roller System Stability for Four …

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 ...

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METAL FORMING PROCESS

TANDEM ROLLING MILL • It is a set of two or three stands of roll sets in parallel alignment • Without changing the direction of metal, metal continuously passed through the rolls CLUSTER ROLLING MILL • Special type of Four High rolling Mill • For rolling hard thin materials, very small diameter work rolls used • This working rolls ...

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PROFILE & FLATNESS MEASUREMENT IN HOT AND COLD …

Shapemeter Roll During the cold rolling process, the strip is rolled and recoiled under high tension. This high strip tension compensates for differences in length or shape defects so that the strip appears to be flat during the rolling operation. There are, however, latent shape defects, which become visible as the strip is again uncoiled.

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Used 350mm 4-hi reverse cold rolling mill

Used 1250 4-hi reverse cold rolling mill; used 1400 12-hi reverse cold rolling mill; used 750 4-hi reverse CRM; Used roll grinder; Used 1380mm 6-hi reverse cold rolling mill; Used 1450 6-hi reverse CRM; Used 4-hi skin pass; Used 1450 four high reversible cold rolling unit; Used 1150 6-hi reverse cold rolling mill; 6Hi reversible cold rolling ...

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In a four high rolling mill there are four rolls out

In a four high rolling mill, there are four rolls out of which. A. One is working roll and three are backing up rolls. B. Two are working rolls and two are backing up rolls. C. Three are working rolls and one is backing up roll. D. All of the four are working rolls. Answer: Option B

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Design and function of CVC rolls as a flatness actuator in ...

2012-5-7 · rolling because of the high rolling pressures that are needed. Also, the work rolls diameters are small of the same reason. If same pressure was to be obtained with thicker work rolls the rolling forces had to be much higher. An advantage with small roll forces is that very good thickness tolerances can be attained. [2, 3, 4]

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

2020-11-9 · 3. 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 opposite direction of the second and the third rolls. The second and third rolls are smaller to provide rigidity in necessity. So those are known as back up rolls.

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