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backup roll contour of a stcrown tandem cold rolling mill

improving-roll-cooling-on-cold-tandem-mills

Backup roll contour of a SmartCrown . SmartCrown was a new system developed by VAI for improving the strip profile and flatness control first applied in 1700 mm tandem cold rolling mills at Wuhan Iron Steel (Group) Corporation (WISCO). rolling. Rolling mill configuration and four high stand of reversing cold mill are shown in figure 1 and 2 respectively. Figure 1 Rolling mill configuration 3. Types of Roll Chocks The roll chocks are broadly categorized into 4 types which is shown in fig 3Top Back up Roll Chock 1. Top Work Roll Chock 2. Bottom Work Roll Chock 3.

DESIGN AND OPTIMIZATION OF ROLLING MILL CHOCK

rolling. Rolling mill configuration and four high stand of reversing cold mill are shown in figure 1 and 2 respectively. Figure 1 Rolling mill configuration 3. Types of Roll Chocks The roll chocks are broadly categorized into 4 types which is shown in fig 3Top Back up Roll Chock 1. Top Work Roll Chock 2. Bottom Work Roll Chock 3. Backup roll contour of a SmartCrown . SmartCrown was a new system developed by VAI for improving the strip profile and flatness control first applied in 1700 mm tandem cold rolling mills at Wuhan Iron Steel (Group) Corporation (WISCO).

Application of LVC Work Roll in Ultra-wide Hot Strip Mills

Shape control characteristics of ultra-wide strip mill were analyzed and the result is that it has deficiencies in the aspect of shape control order to increase the shape control ability of ultra-wide hot strip mills linearly variable crown(LVC) work roll was developed.The shape adjustment ability of LVC varies linearly with strip width and its shape control performances are better than Those two separate functions make strip centering stably and accurately at the entry side of the mill. 5-stand Tandem Cold Mill Most modern Tandem Cold Mill of five (5) stands with all 6-high mill is provided. Positive and negative Roll Benders for Work Rolls and Intermediate Rolls Roll Shift Device for Intermediate Rolls are provided for

Cambering of Four High Cold Mill with the View of Reducing

plex waves of normal four high cold mill effectively but also will reduce the contact between roller ends and minish roll consumption. This technology has created economic benefits for enterprises. Keywords Complex Waves Strip Shape Roll Contour Roll Contact Roll Consumption 1. Introduction In recent years with the rapid development of tandem mill weirton backup rollsmagicaleducation. Rolling metalworking. A rolling mill also known as a reduction mill or mill has a common Rolling mill for cold rolling metal sheet like this piece of brass sheet to ensure that the upper work and back up rolls. weirton steel invests million in tandem mill.

Edge Drop Control Technology of 4-Hi Tandem Cold Rolling

For gaining strip edge drop controllability and increasing roll grinding precision the edge drop control work roll (EDW) was developed and designed in 1700 mm tandem cold rolling mill. During the rolling trial the roll configuration between EDW and conventional backup roll didn t match well because of the large fluctuation of strip edge drop the lower shape control ability and non-uniform Mar 23 2015 · SIEMENS VAI Company profile Aluminium Industry 1. GLOBAL MEDIA COMMUNICATION LTD. 2 Siemens VAI Metals Technologies 2. SIEMENS VAI COMPANY PROFILE3 Index Your challenge 4 Roughing mill 5 Our solution 6 Our portfolio at a glance 7-8 Hot rolling mills 9-10 Cold rolling mills 11-12 Foil rolling mills 13-14 Life-cycle management 15-16 Mill modernization

Weirton Steel Invests 5 Million In Tandem Mill

tandem mill weirton backup rollsmagicaleducation. Rolling metalworking. A rolling mill also known as a reduction mill or mill has a common Rolling mill for cold rolling metal sheet like this piece of brass sheet to ensure that the upper work and back up rolls. weirton steel invests million in tandem mill. conventional four–high mills work roll bending providing a way setting to influence strip shape and flatness within limits is considered an improvement on the rigid roll contour in conjunction with an online flatness measuring a partial automation is possible. 4- Hi Mill Specification. Special Mill Features

Taper Roll Contour Design for Edge Drop Control of Non

The taper work roll of the 1700 mm tandem cold rolling mills had some problems in the course of using and the taper roll contour was ground difficultly and the difference between the designed contour and grinding contour was very big and the work roll and backup roll had very serious and non-uniform roll wearing and even often had roll spalling and above those problems affected the COLD ROLLING Continuous cold rolling mills Tandem mills Single-stand mills FOIL ROLLING Universal foil mills Contour Flatness Control modePCFC Coolant control Foil mill with SCR backup roll Four-high thin strip mill with SCR back-up roll. Title W4 6-302E-Plant_Tech_Alu.qxd

Integrated design of roll contours for strip edge drop and

In conventional rolling mills the length of the contact line between the WR (work rolls) and the BR (backup rolls) (line PS in Fig. 2) in 4-high mill or between the WR (work rolls) and the IMR (intermediate rolls) (line EH in Fig. 2) in 6-high mill is longer than the width of strip rolled (line QR in Fig. 2a or line FG in Fig. 2b). The bending action on the WR exerted by the contact rolling. Rolling mill configuration and four high stand of reversing cold mill are shown in figure 1 and 2 respectively. Figure 1 Rolling mill configuration 3. Types of Roll Chocks The roll chocks are broadly categorized into 4 types which is shown in fig 3Top Back up Roll Chock 1. Top Work Roll Chock 2. Bottom Work Roll Chock 3.

Stability Analysis of a Nonlinear Coupled Vibration Model

Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips. In most mill vibration models either the roll mass is usually limited to vibrate in vertical direction and vertical-horizontal directions or the multiple rolls system is simplified to a single mass system. However the torsional chatter is also a typical type of mill chatter and the Related technology can t be copied to tandem cold rolling with heavy reduction rate which is aimed at managing complex seas. The patent entitled "A back-up roll configuration curve which cooperate with the working roll configuration curve of continuous variable crown mill" the application number is CN.1 7 the patent

Influence of Roll Profile Configuration on High-Strength

According to the characteristic of high-strength strip the roll profile configuration and change of CVC tandem cold mill are analyzed. Through the establishment of FEM model the influences of three representative forms of roll profile configuration on high-strength strip flatness control in CVC cold rolling mill are compared which are conventional back-up roll / CVC intermediate roll back Based on the fact that the backup roll for 2250 CVC tandem mill in hot rolling has serious and non-uniform wear and the edge spalling often happens a new backup roll contour

Integrated design of roll contours for strip edge drop and

In conventional rolling mills the length of the contact line between the WR (work rolls) and the BR (backup rolls) (line PS in Fig. 2) in 4-high mill or between the WR (work rolls) and the IMR (intermediate rolls) (line EH in Fig. 2) in 6-high mill is longer than the width of strip rolled (line QR in Fig. 2a or line FG in Fig. 2b). The bending action on the WR exerted by the contact 02 Overview tandem cold rolling mill Superimposed strategies and solutions are available for • Pass scheduling and set-up model • Threading and unthreading • Tension torque and/or roll force distribution in multi-stand mills roll bite and in a typical Cold Tandem Mill work roll temperatures normally fall in the range of 55oC70oC with

Some Basics of Rolling and Rolling MillsIspatGuru

May 30 2013 · Roll changing deviceThis is a special device designed to attach to the neck of the roll to be removed or inserted into the rolling mills. Mill protection devicesThese are to ensure that the forces applied to the roll chocks are not of such a magnitude to fracture the roll In JP A and JP A is a (hereinafter referred to as "UC mill stand") six-stage mill stand according to the state of the rolling technology especially for a Cold rolling mill disclosed wherein the above-mentioned UC mill stand Roller bending device for applying a bending force to a Work roll and an intermediate roll and at

Taper Roll Contour Design for Edge Drop Control of Non

The taper work roll of the 1700 mm tandem cold rolling mills had some problems in the course of using and the taper roll contour was ground difficultly and the difference between the designed contour and grinding contour was very big and the work roll and backup roll had very serious and non-uniform roll wearing and even often had roll spalling and above those problems affected the Show full abstract then a VCR (varying contact backup roll) was designed for the rolling conditions of PL-TCM (pickling line combined with tandem cold rolling mill) and has been applied to 1700

VCR and ASR technology for profile and flatness control in

The roll contour pattern and variety of work and backup rolls in service and its effect on profile and flatness control performance in 1 700 mm hot strip mill at Wuhan Iron and Steel (Group) Corporation were tested and analyzed by the developed finite element models of different typical roll contours configurations. A rather smooth local work roll contour near strip edges and an increase in tandem cold rolling mill and then applied to the . which includes optimization and design of the work roll contour and varying contact back-up roll (VCR) plus backup roll contour analysis of

Winner s Engineering Solutions 4 High Rolling Mills

conventional four–high mills work roll bending providing a way setting to influence strip shape and flatness within limits is considered an improvement on the rigid roll contour in conjunction with an online flatness measuring a partial automation is possible. 4- Hi Mill Specification. Special Mill Features roller machine jar mills lication of crusher plant in datiya copper and gold ore mining cement grinding small machine 8420 concretize sidewalk grinding Equipment estimation cost for robo sand project backup roll contour of a stcrown tandem cold rolling mill good quality gold ball mills for hot sale vertical shaft cement plants avaiility

COLD ROLLING TECHNOLOGY SOLUTIONS FOR COLD

TANDEM COLD ROLLING MILLS Production capacities of tandem cold mills using coil-to-coil operation are typically in the range of 600 000 to 1 000 000 t/year. Today many of the existing batch mills are extended and modernized to continuous mode operation and new mills are installed for continuous operation right from the start. The elastic deformation of roll system for CVC rolling mill is systematically analyzed using an influence function method.The distribution of contact pressure between rolls is calculated with three kinds of different chamfer shapes at the end of backup rolls and compared with that without chamfer.Optimal designs for parameters of straight step and circle chamfers are done respectively.As a

A set-up model for tandem cold rolling millsScienceDirect

Bryant and Spooner described the simple approach for drafting schedule in tandem cold rolling mills and reported that the key variables are roll force thermal crown and strip shape. More recently Dixit and Dixit 17 applied fuzzy set theory to obtain a reduction schedule in tandem cold rolling mill using the only one constraint of roll power. PURPOSE To control the sectional shape of a plate while sliding both rolls in the axial directions by forming the copper profiles of both rolls of the backup rolls of a multiple rolling mill so as to be complementary to each other in relative axial direction positions. CONSTITUTION The backup roll pair 23 24 has the same shape and their mounting positions are set with a dislocation by 180