distinction between 6 and 4 high cold roll mill

Cold rolling mill 6-high - Andritz

In comparison to a 4-high mill stand, the utilization range is wider. This type of rolling mill is mainly used in offline applications for cold rolling of soft and medium strip and for a wide range of strip widths. Strengths and benefits of the 6-high cold rolling mill. Rolling

DESIGN AND PERFORMANCE OF TANDEM COLD-ROLLING

extensive modelling work to compare the critical parameters of 4-high and 6-high cold-rolling tandem mills. The comparison includes several mill configurations, for example

Comparison of 4-high and 6-high mill-stand technology in cold

2007年2月1日  Siemens VAI has modelled the rolling process in order to be able to compare the critical rolling parameters and results of 4-high and 6-high mill stands in

Types of Rolling Mills Ulbrich

Rolling (metalworking) - Wikipedia

Rolling schematic view Rolling visualization. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough.Rolling is classified according to the

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Research and application of computer control

2016年11月15日  1 Introduction. Aluminium cold rolling is a rolling process to reduce the thickness with a further objective of improving the strength, surface finish and formability of the stock by conducting the process of

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(PDF) Analysis of Edge Drop on Strip Due to Effect of

2023年12月19日  An analytical model of elastic deformation of the rolls based on the influence function method was developed to simulate the rolling process on 6-high single cold mill focusing on the effects of ...

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Advanced Design of Work Roll Contours for Different Roll Mill

2021年7月11日  Thus, this paper presents the effects of various work roll contours designed for (1) the 6th and 7th stand of a 4-high hot tandem rolling mill; (2) single stand 6-high reversing cold mill; (3) 1st to 3rd stands of a 6-high tandem cold mill. Results show that the NGOS strip profile hit rate of 5 micron-meters is increased by the implementations ...

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Difference Between a 2 Hi Rolling Mill and a 4 Hi Rolling Mill - Hani Tech

2019年11月14日  Many friends don’t know what a 4 Hi Rolling Mill is. In fact, the 4 hi rolling mill is a combination of two working rolls and two supporting rolls. It is not only the drive mechanism for the backup roll, but also the work roll driven equipment. The specific choice is to be selected according to the requirements of the customer, and it is also ...

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Modeling and validation of bending force for 6-high tandem cold

2022年9月28日  As shown in Fig. 3, the UCM 6-high cold rolling mill is based on the ordinary 4-high cold rolling mill with the addition of an intermediate roll that can shift laterally between the work roll and the backup roll.Through the hydraulic roll bending system, applying a variable bending force to the end of the work roll or intermediate roll

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Thermal Camber and Temperature Evolution on Work Roll

2020年9月15日  Flatness is an important quality characteristic for rolled products. Modern hot rolling mills are equipped with actuators that can modify the uneven thickness distribution across the width of the strip (crown), taking into account online measurements of various process parameters such as temperature, force and exit strip profile, either

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Processing lines and rolling mills for aluminum

ping a new cold rolling mill for aluminum, thus ideally covering and aligning the enti-re process chain for the production of flat aluminum products. A cold rolling mill in a 4-high or 6-high design, with perfectly ali-gned equipment interacting with the me-chanical equipment, the technological con - trols, and the drive system.

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Force Model and Elastic Deformation Analysis of 20-High Sendzimir Mill ...

2017年4月6日  A 20-high Sendzimir mill is widely used in cold rolling. The deformation of rolls within the roll system as a whole is analyzed without pin-pointing upon each roll and impact on the rolling process. The mechanical model of the work roll, first intermediate roll, second intermediate driven roll, and second intermediate idler roll was proposed and the

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Edge drop control characteristics of the taper-work roll contour

2023年4月4日  Ma et al. developed a symmetrical tapered work roll contour for a six-high reversal mill and claimed that the controlling width was 100 mm. Furthermore, given that the 4-high CVC mill has work roll shifting function, it could use the T-WRS technology to realize similar function of the 6-high UCMW mill .

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Preset model of bending force for 6-high reversing cold

SmartCrown mill, 4-high edge drop and crown compact (ECC) mill, 6-high HC mill, have been developed and applied to the production of cold-rolled strip. Currently, the 6-high reversing cold rolling mill is widely used because of its less investment but effective and powerful ability to control shape. The important control technology of the 6 ...

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6 High Reversible Cold Rolling Mill PPT - SlideShare

2012年2月10日  Technical information about the six high mill Roughness Freq. Of roll Diameter (mm) Ra (micron) change Work roll 425 (max) 380 (min) 0.5 – 0.6 500 tonnes Intermediate rolls 490 (max) 440 (min) 0.6 – 0.7 1000 tonnes Back up rolls 1250 (max) 1050 (min) 0.6 – 0.8 10000 tonnes 5. 7.

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Effect of work roll shifting control on edge drop for 6-hi tandem cold

2020年3月21日  For tandem cold mills with work roll shifting, the roll contours of different stands are usually identical to facilitate roll scheduling. For a 1500 6-high mill to be researched, the curve parameters H arc, L arc, H l, and L l were set to 400 μm, 155 mm, 0 mm, and 0 mm. The work roll shift is given by L use.. 2.2 Cooperative control strategy by

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Different Types of Rolling Mills What They Do - Fenn Torin

2020年2月6日  Three-High: A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High: A 4-HI mill may be used for finish rolling of thin gauge stock. 6-HI roll inserts are also available for narrow width ribbon and foil products. Combination: A combination rolling mill is a versatile “two-in-one” type of metal rolling mill ...

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Preset model of bending force for 6-high reversing cold

SmartCrown mill, 4-high edge drop and crown compact (ECC) mill, 6-high HC mill, have been developed and applied to the production of cold-rolled strip. Currently, the 6-high reversing cold rolling mill is widely used because of its less investment but effective and powerful ability to control shape. The important control technology of the 6 ...

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6 High Reversible Cold Rolling Mill PPT - SlideShare

2012年2月10日  4. INTRODUCTION When sheet is entered between a pair of rolls and any kind of force applied to that sheet, like that generated when making a reduction, the rolls, since they are supported at the roll ends,

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Effect of work roll shifting control on edge drop for 6-hi tandem cold

2020年3月21日  For tandem cold mills with work roll shifting, the roll contours of different stands are usually identical to facilitate roll scheduling. For a 1500 6-high mill to be researched, the curve parameters H arc, L arc, H l, and L l were set to 400 μm, 155 mm, 0 mm, and 0 mm. The work roll shift is given by L use.. 2.2 Cooperative control strategy by

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Different Types of Rolling Mills What They Do - Fenn Torin

2020年2月6日  Three-High: A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High: A 4-HI mill may be used for finish rolling of thin gauge stock. 6-HI roll inserts are also available for narrow width ribbon and foil products. Combination: A combination rolling mill is a versatile “two-in-one” type of metal rolling mill ...

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A rapid calculation method for predicting roll deformation of six-high ...

2018年9月15日  FEM has proved to be reliable and is generally used for offline calculation and analysis, for instance, four-high mill modeling [1, 2] and six-high mill simulation [3,4,5] by FEM to analyze the capability of the strip shape control of cold rolling mill. Yuan et al. proposed a more accurate roll flattening model for a six-high mill based on FEM.

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The Ultimate Guide to Stainless Steel Surface Finishes Ulbrich

TR (Temper Rolled) Finish . A TR finish is produced when an annealed surface is cold rolled to obtain mechanical properties. The appearance varies based on the alloy and the amount of cold work. Quarter hard, half hard, and full hard are common examples of temper-rolled finishes. This finish is used all the time and is one of the largest ...

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Glossary of Steel Industry Terms - American Iron and Steel Institute

Cold-Rolled Strip (Sheet) Sheet steel that has been pickled and run through a cold-reduction mill. Strip has a final product width of approximately 12 inches, while sheet may be more than 80 inches wide. Cold-rolled sheet is considerably thinner and stronger than hot-rolled sheet, so it will sell for a premium (see Sheet Steel). Cold Working ...

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Surface Roughness vs Surface Finish RA RMS Astro Pak

2020年7月14日  A #4 finish is a straight-grained finish commonly thought of as ‘brushed’ finish, as are #3 and #6 finishes. A standard #4 finish could be about 0.8 (32) Ra, while a #4 Dairy or Sanitary finish have an roughness average between 0.3 (12) Ra and 0.4 (16) Ra. Two other finishes; #7 and #8 are buffed. The surface of #8 is very nearly flawless.

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Rolling Mills Metal Rolling Mill Machine Rolling Mill

Two-High: Generally, a 2-HI mill is used for hot or cold breakdown and finishing of bar, sheet or strip. A wide range of sizes with separating force capacities from 10,000 lbs. (4.53 MT) to over 3,000,000 lbs. (1360 MT) are available. Three-High: A 3-HI mill is an economic milling solution for the breakdown of rod and ingot. Four-High: A 4-HI mill may be used

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Research and application of computer control system for

cold rolling mill is shown in Fig. 4. The automation architecture of the cold mill includes the follow-ing three levels [12]: Level 2: From entry and exit coil data specifications, this level is re-sponsible for finding the best mill set-up in order to ensure high quality and productivity. On the basis of static models, this level

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Comparison of 4-high and 6-high mill-stand technology in cold-rolling mills

2007年2月1日  The results show that the new intermediate roll contour markedly enhance profile and flatness control ability of rolling mill compared with the conventional one, work roll bending control effect ...

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Research and application of computer control system for

2016年11月15日  1 Introduction. Aluminium cold rolling is a rolling process to reduce the thickness with a further objective of improving the strength, surface finish and formability of the stock by conducting the process of rolling at the room temperature [].Aluminium alloys can be cold rolled down to thickness of around 0.05 mm. Pure (low-alloy) aluminium can

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Simulation and control of high-order flatness defect in rolling

2022年3月31日  In the wide titanium strip cold rolling process, the high-order flatness defect is one of the most difficult problems to be solved. Based on the finite element method, considering the anisotropic mechanical characteristics of titanium, an implicit integration calculation model of rolls-strip for 20-high mill was developed, which can simulate the

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Flat rolling mills for copper - SMS group GmbH

That’s because they roll a wide range of copper and copper alloys to many different dimensions and gauges. Among SMS group’s references is a powerful TCM able to process entry gauges of up to 20.0 millimeters. The minimum final gauge from this type of mill is 0.5 millimeters. You can choose between CVC ® plus 4-high and CVC ® plus 6-high ...

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