mill stand roll change

Four-high mill stand roll change device, a method of ...

A method of retrofitting a four-high rolling mill stand with a roll change apparatus, the steps of the method comprising: machining opposite inboard facing surfaces of a first backup roll chock and a second backup roll chock that support a backup roll within the mill stand; attaching actuators to the machined opposite inboard facing machined surfaces; attaching a first lift-rail to a first selected set of said actuators

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US6408667B1 - Four-high mill stand roll change

The roll change device is capable of being installed on an existing four-high mill stand without making modifications to the roll stand housing, and it is particularly suited for retrofit in an...

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Roll changing device for rolling mill - Hitachi, Ltd.

A roll changing device for rolling mills, in which the roll are changed through roll exchange between the work roll changing rails and intermediate roll changing rails which are mounted in a housing, and delivery rails placed in front of the rolling mill. The improvement comprises a vertically movable floor device carrying the delivery rails.

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A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  changes in rolling conditions. After a roll change or a mill stop rolls need some time to return to stable thermal conditions, every new bar entering the mill creates an impact, ... and sometimes there are really severe rolling accidents, due to faults by operators,

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Understanding Rolling Process in Long Product

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 product. The data required to perform this function is usually provided in two forms.

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EP 0248604 B1 19910130 - ROLL CHANGE

In order to facilitate changing of the rolls as an interlocked stack, there are resilient support mechanisms (49-58) in the upper horizontal roll chocks which are restrained by the hooks (26) on the balance beams (25) with the mill in use and when the beams are lowered resilient support mechanism are released and extending engage the vertical roll chocks thus supporting the upper horizontal roll chocks resiliently.

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Upgrading of Hot Finishing Mill to 4-Stands, and ...

2016-5-25  an overview of the hot finisher mill after the upgrade, and describes the new control technology and hot rolling pro-cess control system that were introduced. 2. GENERAL DESCRIPTION The hot rolling mill of the Fukui Works went into service in May, 1983 as a world-class facility, equipped with large rolling stands capable of producing wide, large-diameter

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Rolling of steel in Hot Strip Mill – IspatGuru

When setting the roll gaps for threading, it is critical that this factor be compensated for in each of the mill stands; to do so, sophisticated models are used by mill automation to estimate the rolling force for each transfer bar in each stand based on, among other

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SD Three-roll Mill Grinding and Dispersing Bühler

2 天前  Camberless Viva roll technology, efficient cooling and cleanroom design give you the flexibility you need for your precise application. Guaranteed safety The pivoting aluminum safety cover, electrically detected catch basin and roll-in protection all help ensure safe operation to CE standards.

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Tandem cold mills (Steel) SMS group

You can operate them in either batch or continuous mode as CTCM (Continuous Tandem Cold Mill). Optionally, it's possible to arrange them as coupled pickling line/tandem cold mills (PL/TCM). The large number of plants we have built, especially for very wide strips, reflects the trust our customers worldwide place in our proven plant technology.

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Mill Stands - PPRM

2020-8-31  Housingless mill stand. ... High rigidity, reliability and quick roll change capabilities are the key features of these state of the art mill stands, which are designed for producing bars, wire rod, angles, flats, channels, and universal beams. The connection and disconnection of the spindles and all the fluid utilities are fully automatic and ...

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EP 0248604 B1 19910130 - ROLL CHANGE

306432078 - EP 0248604 B1 19910130 - ROLL CHANGE ARRANGEMENT FOR BEAM MILL STAND - [origin: EP0248604A1] A beam mill stand has lower horizontal roll chocks (16), supported by a screw-up (17) while upper horizontal roll chocks (14) suspended on hooks (26) from balance beams (25) are urged downward by screw-downs (15). Vertical roll chocks (22, 24) are supported by and moveable in

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Roll Stands from Rafter Equipment

Roll stands are designated by the roll shaft diameter. For example, our RT-1000 stand is a 1″ shaft machine, and our RT-8000 stand is an 8″ shaft machine. Our single-point adjustment (SPA) top roll shaft adjustment has essentially become a standard feature on all new mills.

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Advanced technologies for a new 20-roll mill stand

2021-2-17  The new 20-roll stand produces 110,000 t per year of cold rolled strip with a width of up to 1350 mm and a thickness between 0.2 to 2.5 mm, at a rolling speed of max. 800 m/min. It processes coils weighing up to 30 t. ABB sets standards in the automation of stainless-steel mill stands For this cold rolling mill, ABB applies the complete

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Upgrading of Hot Finishing Mill to 4-Stands, and ...

2016-5-25  stand (F0) upstream of the three existing stands (F1-F3). Photo 1 shows the appearance of the finishing mill and Table 1 shows main specifications. The newly installed F0 stand is of 4-high construction with hydraulic screw-down, and to provide for the rolling of * Fukui FA Engineering Sec., Fukui Planning Dept., Plant Facilities Div.

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Steel Roughing Rolling Mill Stand - Hani Steel Rolling

The steel roughing rolling mill stands are used to reduce the thickness of the steel while at the same time extending the overall length. Steel Roughing rolling mill stand is an important part of a work stand, roll bearing chock and roller adjustment device is installed on the frame.

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Long rolling mill revamped by Primetals Technologies ...

2020-10-29  Other equipment supplied included two stand-by stands, the retrofit of the stand lubrication system to allow quick connection/disconnection during stand change operations, encoder systems for gap adjustment, workshop systems for stand preparation and roll change, compatible with both Red Ring Series 1 and 5, as well as with other existing stands.

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Principles and Applications of Metal Rolling

2015-11-19  4.1 Mill Stand Components and Mechanisms 168 4.1.1 Rolling mill rolls 169 4.1.2 Roll neck bearings 186 4.1.3 Roll chocks 197 4.1.4 Mill housings 201 4.1.5 Mechanisms for roll adjustment and roll balance 205 4.1.6 Roll change device 217 4.1.7 Sendzimir cluster mills 220 4.1.8 Guides and repeaters 223 4.1.9 Guide tables and loopers 228

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A Review on Chatter Analysis in Cold Rolling process

2018-12-12  17 Defective work-roll bearings: (Radial loads, when applied to bearings through roll bending or unbalance or eccentricity of the rolls). 18 Inter-stand coupling 19 Chatter-affected strip entering the mill stand 20 The causes for the fifth octave mode chatter are as follows: (a) General Mill vibrations and operating conditions:

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SD Three-roll Mill Grinding and Dispersing Bühler

2 天前  Our versatile SD three-roll mills bring you high quality, high throughput and repeatable application for nearly any viscosity mass. From inks and electronics to cosmetics and pharmaceuticals, this is the mill you can rely on, day in day out.

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EP 0248604 B1 19910130 - ROLL CHANGE

306432078 - EP 0248604 B1 19910130 - ROLL CHANGE ARRANGEMENT FOR BEAM MILL STAND - [origin: EP0248604A1] A beam mill stand has lower horizontal roll chocks (16), supported by a screw-up (17) while upper horizontal roll chocks (14) suspended on hooks (26) from balance beams (25) are urged downward by screw-downs (15). Vertical roll chocks (22, 24) are supported by and moveable in

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Rolling Mill Stands - Housing Less Rolling Mill Stand ...

As a result of installation of two lines of vertical stands 320 after a linear mill (Serovsky metallurgical plant) rolled product cross-sectional accuracy was 0,4 mm per Ø 1622 mm. Replacing the linear mill stands with the new housingless ones allows to achieve rolled product accuracy within the limits of 0,2 mm.High rigidity, reliability ...

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HUNGER Hydraulics USA: Work roll change cylinders

Work roll change cylinders are used to extract old roll sets from the mill stand and to insert new roll sets. Roll change out depends on roll wear scale, the number of slabs that it has produced or if the steel grade being rolled is changed. Even though the cylinder is not directly used in the mill process its continuous availability and ...

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Steel Roughing Rolling Mill Stand - Hani Steel Rolling

The steel roughing rolling mill stands are used to reduce the thickness of the steel while at the same time extending the overall length. Steel Roughing rolling mill stand is an important part of a work stand, roll bearing chock and roller adjustment device is installed on the frame.

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Advanced technologies for a new 20-roll mill stand

2021-2-17  The new 20-roll stand produces 110,000 t per year of cold rolled strip with a width of up to 1350 mm and a thickness between 0.2 to 2.5 mm, at a rolling speed of max. 800 m/min. It processes coils weighing up to 30 t. ABB sets standards in the automation of stainless-steel mill stands For this cold rolling mill, ABB applies the complete

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Long rolling mill revamped by Primetals Technologies ...

2020-10-29  Other equipment supplied included two stand-by stands, the retrofit of the stand lubrication system to allow quick connection/disconnection during stand change operations, encoder systems for gap adjustment, workshop systems for stand preparation and roll change, compatible with both Red Ring Series 1 and 5, as well as with other existing stands.

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Roll Stands from Rafter Equipment

Roll stands are designated by the roll shaft diameter. For example, our RT-1000 stand is a 1″ shaft machine, and our RT-8000 stand is an 8″ shaft machine. Our single-point adjustment (SPA) top roll shaft adjustment has essentially become a standard feature on all new mills.

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The Study of Continuous Rolling Mill Inter-stand

2015-1-1  It will influence size reduction as at raising tension the roll pressure and stand elastic expansion are decreased. ... Frequency response characteristics of the rolling mill at change of the speed setting for the first stand (1,2- for rolling speed 1.78 m/s, 3,4- for rolling speed 17.8 m/s; 1,3- for the first inter-stand gap, 2,4- for the ...

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A Review on Chatter Analysis in Cold Rolling process

2018-12-12  17 Defective work-roll bearings: (Radial loads, when applied to bearings through roll bending or unbalance or eccentricity of the rolls). 18 Inter-stand coupling 19 Chatter-affected strip entering the mill stand 20 The causes for the fifth octave mode chatter are as follows: (a) General Mill vibrations and operating conditions:

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SD Three-roll Mill Grinding and Dispersing Bühler

2 天前  Our versatile SD three-roll mills bring you high quality, high throughput and repeatable application for nearly any viscosity mass. From inks and electronics to cosmetics and pharmaceuticals, this is the mill you can rely on, day in day out.

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