Process integration provides the key to final product flatness

enhancement of the conventional 4-high mill by additional actuators such as ... profiled work rolls, the insertion of intermediate rolls or the dynamic alteration of the ... roll surface just beyond the strip width to counter the adverse thermal camber...

Get Price

P Global process control of a cluster mill for rolling stainless ... - ABB

A new 64-inch cluster mill for rolling stainless steel strip, installed in the Tornio ... sistently high quality is ensured by a combination of auto-adaptive mathematical ... Roll data. Work roll diameter ... 2. 5400 kW. 107/386 rev/min. 11. 11. 7. 7. 8. 8. 5. 4. ∼. ∼. ∼. R O L L I N G. M I L L S ... area (eg, diameter, camber, taper ge-.

Get Price

Adaptive Fuzzy Logic Steering Controller for a Steckel Mill Arno ...

4 Fuzzy Logic . ..... Figure 2.3: Wedge strip rolled camber . ..... Mill to the Steckel mill. Mill Level. The level of the mill refers to the tilting of the top work roll ... hot rolling operation the steel is rolled on a 4-high finishing mill where strip movement.

Get Price

CAEF Roll failures manual

When specifying work roll grades for wide strip mills, roll manufacturers ... breakage of work rolls and in particular for 4-Hi work rolls. .... removal, correct roll camber, prevention of cobbles etc., are necessary to prevent as many causes of local...

Get Price

Rolling aluminum - The Aluminum Association

DVD “Rolling Aluminum: From the Mine Through the Mill”. The expanded explanations of ... Page 4 .... THE ALUMINUM ROLLING MILL ..... used in such heavy-duty applications as high-volt- .... with work rolls supported by two or more back-up.

Get Price

Cold rolling mill 6-high - ANDRITZ GROUP

Product description. The diameter of the 6-high work rolls amounts to approximately 1:4 in relation to the barrel length. In comparison to a 4-high mill stand, the...

Get Price

grinding of hi mill rolls by asian rewari

camber for 4 hi mill work roll. camber untuk 4 roll mill kerja hi; grinding of hi mill rolls by asian rewari . 4 hi cold roll mill housing load formula. MORE>>...

Get Price

Numerical analysis of strip edge drop for Sendzimir mill

is based on the contact length between the rolls or between the work roll and the strip; sec- ond, two relative .... under certain rolling conditions for a 4-high mill employing ..... initial work roll crown and the roll thermal camber and the roll wear...

Get Price

Glossary | Element Machinery

Camber is the deviation of a side edge from a straight edge over a specified length ... Cladding on a Element 2 or 4 high rolling mill is accomplished by squeezing two .... The material is fed in between two rollers, called work rolls, that rotate in...

Get Price

Finite element analysis of deflection of rolls and its correction by ...

A two high mill with work roll diameter of 0.95m and 3.6m in length is ... free steel were collected at entry and exit of the two high 4-stand rolling mills, rated ... Sheet surface profile after providing camber in rolls It is quite evident from the figure8,...

Get Price

ROLLING MILL AND METHOD OF ZERO ADJUSTMENT ... - FAQs

Jan 3, 2013 ... That is, this is based on the fact that high precision rolling zero ... A rolling mill which has at least one upper and lower pair of a work roll and a backup ... work rolls are offset from the backup rolls. 4. A rolling mill as set forth in claim 2, ... during work, but it cannot be said that the above-mentioned camber and...

Get Price

PDF Download

Abstract: The deflection of rolls of Sendzimir mill with double AS-U-Roll was simulated by finite element method(FEM). The ... accuracy sheet, etc, for small diameter of work roll, high rigidity and high ... rolling force on rolls deflection; schemes 1, 4 and 5 for .... [12] NILSSON A. FE simulations of camber in hot strip rolling [J].

Get Price

SCIENCE _ - EU Bookshop - Europa

parameters (such as entry thickness profile, hot-strip camber, roll force) on the cold-rolling processing and ..... Simple beam deflection model for a 4-high stand ..... Also Measurements were made of the mill work rolls to provide information for.

Get Price

Hot Rolling - Primetals Technologies Japan, Ltd.

6-22, Kanonshin-Machi, 4-Chome, Nishi-ku, Hiroshima 733-8553, Japan ... High pressure descaler up to 400. MPa ... Stop-and-go press to reduce the risk for production of a cambered slab. 2. ... 1st shut down: Approximately 10 days for foundation work preparation ... Hydraulic AWC and AGC systems for Hot Rolling Mill.

Get Price

ISIJ International | Steel Science Portal

Relation between Camber and Wedge in Flat Rolling under Restrictions of ... Controllability in New 6-High Mill (UC-4 Mill) with Small Diameter Work Rolls.

Get Price

Chapter 3 - Rolling of metals

Typical arrangement of rollers for rolling mills. Two-high mill ... contact with the work piece, another pair of rolls ..... 4) The volume of metal is constant before and .... When high forces generated in rolling are transmitted to the workpiece through ..... Camber and crown can be used to correct the roll deflection (at only one.

Get Price

TelePro, Inc. - Rolling Mill Automatic Flatness Control (AFC)

The TelePro/SSE AFC system consists of integrated control of work roll bending, ... the overall layout of the AFC system for a 4-high mill with CVC work roll side shifting. ... roll crown, HGC level) and mill disturbances (roll force, thermal camber).

Get Price

CMI 4-High Reversing Cold Rolling Mills - Cockerill Maintenance ...

CMI designs 4-High Reversing Cold Rolling Mills with high output and ... Work roll positive and negative bending are the additional features provided for better...

Get Price

6 High Reversible Cold Rolling Mill - SlideShare

Feb 10, 2012 ... SCHEMATIC DIAGRAM OF 6 HIGH ROLLING MILLS Hydraulic jack Back Up roll ... Shear Shear Work rolls Uncoiler Uncoiler Recoiler Bottom foundation 2; 4. .... CROSS BOW DEFINITION: CROWN OR CAMBER RUNNING...

Get Price

Waterbury Farrel Rolling Mills

However, a 4-High Mill using smaller diameter work rolls may achieve the same results without some of the ... Freedom from camber and edge cracking.

Get Price

New generation of levelers tames high-strength steels - The Fabricator

Dec 11, 2007 ... Levelers correct defects like coil set, crossbow, camber ... As the material is cold-rolled, deflections in the rolling mill thin some areas ... The intermediate work roll set eliminates roll wear on the leveling ... This third type of coil leveler is suitable for tasks requiring the highest degree of flatness (see Figure 4).

Get Price

SIROLL Alusix – Six high rolling mill for aluminium - Siemens

multiple work roll camber sets and thus a reduced roll inventory when compared to a standard 4-high mill. - Uncomplicated grinding techniques as all rolls are...

Get Price

PDF FullText

ing with a single roll drive” and high-power work-roll. * Originally published in .... 4. In the finisher of Chiba Works No. 1 hot strip mill, the EL-value can be. K'WRS.

Get Price

Hot rolling and rolling defects - nptel

Roll camber can be varied by 1] bending the work rolls by applying external force. ... Normally elastic constant for mills may range from 1 to 4 GNm-1. Roll elastic...

Get Price

Steel Rolling :: Total Materia Article

Extended Range Add On for Advanced CAE Calculations 201584 ... The roll gap on a three-high mill cannot be adjusted between passes, ... case of two-high, and in an attempt to lower the rolling load, the work roll diameter is decreased. ... the roll necks thereby altering the roll camber by actually bending the rolls.

Get Price

Hot & Cold Working and the Rolling Process

As shown in the figure below, the rolls in a 4-high rolling mill are subjected to four kinds of ... Lack of camber or insufficient cambering of the work rolls results in...

Get Price

Review on cold rolling mill roll deformation - ijoer

The work roll of 20 Hi rolling mill generally maintains 50 – 55 HRc up to 4-5 mm ... profile called as camber which is in microns only can be given on the grinding...

Get Price

Hot rolling and rolling defects

Page 4 of 10. Fig. ... may be high – ranges from 0.2 to 0.7. Strain rate in hot ... Roll camber can be varied by 1] bending the work rolls by applying external force. 2] Shifting ... Normally elastic constant for mills may range from 1 to 4 GNm-1. Roll...

Get Price

Y $31555

also true in mills with thin work rolls which heat up rapidly and produce ... trol of the Shape of Metal Strip by Camber Variation ... FIGURE 2 is an elevational view of a 4-high mill char acterized ... FIGURE 3 is a vertical section of the 4-high mill.

Get Price

Forming high-strength materials - TheFabricator

Jan 31, 2002 ... A high number indicates the material is stiff, while a low number indicates it is not. ... in. thick with a 40,000-PSI yield strength must be bent to a 31-1/4-in. diameter ... The rolls in a flattener always remain straight, but the work rolls in a ... rolls that stretch strip edges or poor rolling mill conditions that cause an...

Get Price

VCROLL™ | Products | Nippon Steel & Sumitomo Metal Corporation

Our VCROLLTM is a unique roll that offers significant improvements in the shaping ... types of new and existing rolling mills, such as 2-high rolling mills and 4-high rolling mills. ... and arbor as an oil chamber, and an oil passage at the center of the arbor directs oil to the chamber. ... It is very easy for operators to work with.

Get Price

non-contact measuring systems in hot strip mills - IMS Systems, Inc.

4. IMS Messsysteme. To meet these high demands, the steel industry needs innovative, ... fast work roll bending systems ... camber and turn-up/turn-down,.

Get Price