backup roll contour of a smartcrown tandem cold rolling mill

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National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004; 2. State Key Laboratory of Metastable Material Science and Technology, Yanshan University, Qinhuangdao 066004 ... steadiness of flatness control, self-maintenace of roll contour, statistical methods and ...

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Finite Element Analysis of Strip and Rolling Mills

Backup roll contour for edge drop control technology in tandem cold rolling mill ... Expand. 4. Save. Alert. Backup roll contour of a SmartCrown tandem cold rolling mill. Guanghui Yang, Jianguo Cao, J. Zhang ... was a new system developed by VAI for improving the strip profile and flatness control first applied in 1700 mm tandem cold rolling ...

Spalling Prevention and Wear Improvement of Rolls in Steel Strip Hot ...

The ultimate determined backup roll profile parameters are as follows: a 0 = 570, a 2 = 2.28 × 10 −4, a 4 = −3.65 × 10 −9, a 6 = 2.81 × 10 −15. Figure 7 is the schematic illustration of roll profile design procedure.

Influence of intermediate roll shifting on strip shape in a CVC-6 ...

Jul 5, 2022Analysis of the CVC contour In the CVC-6 tandem cold mill, the WR contour was the conventional contour, and the contours of the IMR and BR were three-order CVC and reverse-CVC, respectively. According to the coordinate system of the CVC contour, as shown in Fig. 3, the three-order CVC curve can be modelled by Eq. ( 1 ).

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cold rolling mills Quality and experience in rolling technology Benefit from our more than 80 years of experience and expertise that made us one of the leading suppliers for the cold rolling industry. In every one of our projects, we have proven ourselves the optimal partner through excellence in flexibility, meeting deadlines, precise

Multi-Objective Optimization of Intermediate Roll Profile for a 6-High ...

Yang et al. [ 16] developed a new flexible shape backup roll (FSR) based on the SmartCrown roll profile. The problem of nonuniform contact pressure between rolls was alleviated. The optimal profile parameters were not determined, although the effect of SmartCrown profile parameters on roll gap control was analyzed in the kinds of literature.

US10589328B2 - Roll crown for the specific avoidance of quarter waves ...

The present invention is based on a roll stand for producing flat rolled stock, in particular metal strip, wherein the roll stand has roll stand uprights, wherein work rolls or work rolls and...

Effect of Crown Shape of Rolls on the Distribution of Stress and ...

This study consists of a Finite Element Analysis considering combinations of crown shape for Back Up Roll and Work Roll, rolling forces, properties of materials and dimensions of rolls and strip. An analysis of the rolls based on a double cantilever model with the fulcrum of the beams in a centerline mill was carried out.

Design and Optimization of Rolling Mill Chock - Ijariit

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. Bottom Back Up Roll Chock Figure [3] Roll chocks Figure [2] Four high stand of reversing cold mill 4. Design of chocks The housing of a work roll or backup roll bearing is known as chock.

Backup roll contour of a SmartCrown tandem cold rolling mill. Journal of Science and Technology Beijing,2008, 15(3):357-361. 3、*,,,. 2180 mmCVCSMS-EDC.,2018, 53(5):52-61.

Issue 2009 | 3 (10 ) - Siemens Industry, Inc.

Cold rolling. The five-stand, tandem cold-rolling mill at Baosteel. Group Corporation is one of the largest of its kind anywhere. It was originally built in the late 1980s and was. part of the first expansion phase of flat-steel produc-14 metals &mining 3|2009. Roughing mill entry at. the Arcelor Mittal Poland. hot-strip mill. tion in Baoshan.

Influence of intermediate roll shifting on strip shape in a CVC-6 ...

2nalysis of the CVC contour A In the CVC-6 tandem cold mill, the WR contour was the conventional contour, and the contours of the IMR and BR were three-order CVC and reverse-CVC, respectively. According to the coordinate system of the CVC contour, as shown in Fig. 3, the three-order CVC curve can be modelled by Eq. (1).

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beijing lili mill

24 ensp 0183 ensp 1982 1986 8 An hui rough rolling mill of steel management 1989 1993 8 Beijing institute of technology the principal s office administration 1993 1993 9 Beijing institute of technology school of economics and management teachers Technical titles In July 1996 promoted to associate professor In July 2001 promoted to professor ...

Influence of Work Hardening on the Surface of Backup Rolls for a 4-High ...

Smart crowns in cold and hot rolling mills [ 2, 3] have been studied to reduce wear in work rolls and compensate the pressure distribution to reduce spalling. Negative crowns in work rolls were employed by Wang et al. [ 4] to evenly distribute the contact stress between backup and work rolls.

Backup roll contour for edge drop control technology in tandem cold ...

Using this model, the reasons for some problems exists on the 1700 mm tandem cold rolling mill configuration of the conventional backup roll and tapered work roll system such as the lower shape...

SIEMENS VAI Company profile Aluminium Industry - SlideShare

• SIROLL SmartCrown® roll contour guarantees enhanced flatness control. • For perfect cooling and contour control we provide pulse- modulated work roll spray bars. Chinalco Ruimin - mill build SIROLL ALU features a full range of aluminium hot rolling mills for both new and revamp projects.

Multi-Objective Optimization of Intermediate Roll Profile for a 6-High ...

The SmartCrown roll profile is defined as the sum of a sinusoidal and linear function. A continuous, gradual adjustment of roll gap profile is achieved by the continuous axial shifting. SmartCrown roll profile can be described as Equation (2) and Equation (3). ysu(x) = Asin 2Fai(x +C) L ! (B x +C) (2) y sb(x )= Asin

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Studay on Backup Roll Contour of a SmartCrown Plate Rolling Mill ... Backup roll contour of a SmartCrown tandem cold rolling mill[J].Journal of Science and Technology Beijing,2008,15(3)：357-359. [5] A.Seilinger, A.Mayrhofer, A.Kainz. SmartCrown - A New System for Improved Profile & Flatness Control in Strip Mills. Steel Times ...

Experimental Validation and Numerical Simulation of Flexible and Micro ...

3 60 180° and can adjust the strip flatness [7]. Jiang et al. proposed the designed principle of CVC roll 61 profiles based on a quartic curve, which can be used to control quarter buckles [8]. Lu et al. designed 62 a new third-order CVC roll profile to reduce the axial force on the work roll [9]. Li et al. suggested 63 that the most key factor for controlling Smartcrown roll crown is contour ...

(PDF) SmartCrown - A new system for improved profile and flatness ...

SmartCrown is a new, VAI-developed profile- and flatness-control system which can be installed in all hot- and cold-rolling mills where steel or aluminum is produced. On the basis of the unique...

Backup roll contour of a SmartCrown tandem cold rolling mill

sc backup roll if the work roll is smartcrown, the ideal matching backup roll is establishment of the smartcrown contour on the backup roll (in short sc backup roll) whose contour is dissymmetrical with the smart-crown work roll contour as shown in fig. 3. 300 |- 200 'i 100 e. upper udiic of the top work roll i .owcr edge of the top backup roll .

Improvement in continuously variable crown work roll contour under CVC ...

A method of calculating the continuously variable crown work roll contour and the relevant constraint conditions under CVC cyclical shifting mode are proposed. The finite element model is built to calculate the roll gap crowns and the adjustment coefficients of bending force for different strip widths. Improvement in the continuously variable crown work roll contour has been implemented on the ...

Mathematical and numerical analysis of cross ... - ScienceDirect

Sep 1, 2021Backup roll contour of a SmartCrown tandem cold rolling mill. J Univ Sci Technol B, 15 (2008), pp. 357-361. Article Download PDF View Record in Scopus Google Scholar ... Premature failure analysis of forged cold back-up roll in a continuous tandem mill. Mater Des, 32 (2011), pp. 4376-4384. Article Download PDF View Record in Scopus Google Scholar.

Influence of Work Hardening on the Surface of Backup Rolls for a 4-High ...

May 13, 2022Backup rolls are the main tool in a four-high rolling mill; the rolling forces applied in load cells promote the fatigue of the material due to mechanical contact between backup rolls and work rolls. This work investigated the causes of recurrent failures in backup rolls, with cracking always initiated on the surface of the roll body and finishing in the main radius between neck and roll body ...

Siemens VAI Company Profile by GMC Online -

• SIROLL SmartCrown® roll contour guarantees enhanced flatness control. • For perfect cooling and contour control we provide pulsemodulated work roll spray bars. Advanced roll stack actuators such...

Lami 08 | PDF | Vestir-se | Estresse (Mecânica) - Scribd

Key words: Rolling mill rolls; Backup roll; Numerical analysis; Fatigue. 1 Contribuição técnica ao 45° Seminário de Laminação - Processos e Produtos Laminados e Revestidos, 21 a 24 de outubro de 2008, Ipojuca - Porto de Gainhas - PE 2 Doutorando do Departamento de Engenharia Naval e Oceânica da Escola Politécnica da USP, gudonato ...

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For the current status that the edge drop detector of cold tandem rolling mill can only control the rolling thickness deviation less than 10μm at C15(distance of 15 mm from edge)of cold rolled steel strip and meanwhile cannot avoid the bulging defects generated in the other positions,a new optimization method of dual-slope tapered work roll ...

VCR and ASR technology for profile and flatness control in hot strip mills

ASR work roll shifting strategy for schedule-free rolling in hot wide strip mills. By Jian Cao. 3D FEM analysis of strip shape during multi-pass rolling in a 6-high CVC cold rolling mill. By Dongbin Wei. A computational method to predict strip profile in rolling mills. By Arif Malik.

Metals | Free Full-Text | Prediction and Control Technology of ... - MDPI

The optimisation of the roll contour reduced the concentration of contact stress between the back-up roll and the work roll and improved the flatness control of the bending force. Kong et al. [ 9] built an elastic-plastic FEM model for the calculation of roll thermal expansion, which improved the calculation accuracy.

Edge Drop Constituent Analysis of Cold Rolled Strip

Aiming at the strip edge drop control, the three dimensional finite element roll system models were built. From the point of the burdened load and deformation of the roll system, the reason which caused the strip edge drop and its composing were analyzed, and the critical width was proposed to control the strip edge drop. Based on the FEM analysis and industrial experiment, the VCR (Varying ...

Design of a Kind of Backup Roll Contour Used in Four-High CVC ... - J-STAGE

reverse CVC backup roll contour is presented, which is designed to solve the problem of uneven contact pressures between cylindrical backup roll and CVC work roll in four-high mill. The main feature of reverse CVC backup roll contour is that the contour is generated by fitting one roll surface contour and four cubic chamfer contours, and

Industrial experiment and application - Finite element analysis of ...

Yang, G.H., Cao, J.G., Zhang J., et.al. (2008).Backup roll contour of a SmartCrown tandem cold rolling mill. International Journal of Minerals, Metallurgy and Materials, Vol.15,No.3: 357-361. ISSN 1005-8850 Chen, X.L., Yang Q., Zhang Q. D., et.al. (1994/1995). Varying contact backup roll for improved strip flatness.

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Finite Element Analysis Elastic Deformation of Roll System for Cold ...

Backup roll contour of a SmartCrown tandem cold rolling mill G. Yang, Jianguo Cao, J. Zhang, Shenghui Jia, Renwei Tan Materials Science 2008 14 View 2 excerpts, references background Domestic multi - roller rolling mill have been implicated in the production of thin cold rolled copper strip [ J ] World Nonferrous Metals 2008

Development and application of roll contour configuration in temper ...

Abstract In order to improve the flatness of hot rolled thin gauge steel strip, a new type of roll contour configuration was developed for a four-high temper rolling mill based on the finite element method analysis. The roll contour configuration consists of a variable contact back-up roll contour and a positive crown work roll contour.

Backup roll contour of a SmartCrown tandem cold rolling mill

A new FSR (flexible shape backup roll) was developed and applied in 1700 mm tandem cold rolling mills. A lot of good actual effects of FSR, such as evident improvement in profile and flatness of...

Axial Force Analysis and Roll Contour Configuration of Four-High CVC Mill

G. H. Yang, J. G. Cao, J. Zhang, S. Jia, and R. Tan, "Backup roll contour of a SmartCrown tandem cold rolling mill," Journal of University of Science and Technology Beijing: Mineral Metallurgy ... "Development and application of pressure-equalizing back-up roll contour in hot strip mill," Iron and Steel, vol. 47, no. 7, pp. 44 ...

Backup roll contour of 2250 CVC hot strip mill | Request PDF - ResearchGate

G.-C. Wei Abstract 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...