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 named CVR (CVC-VCR ...
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In order to analyze the influence of technical parameters on work roll axial force of four-high continuous variable crown (CVC) mill, the deformation analyzing model with top roll system and strip was established based on influence function method. Then a CVC work roll curve designing scheme was proposed and it was carried out on some cold rolling mill …
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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). After tracing and testing, the application of the conventional crown backup roll matching the SmartCrown work roll of the production mill led to heavy and …
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The new SmartCrown profile and flatness control technology was first adopted in a wide strip tandem cold rolling mill. Through studying on the function structure and characteristic parameters, this paper deduced a way to determine the SmartCrown work roll contour. The effect of roll contour characteristic parameters on the roll gap profile was further …
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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 …
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International Journal of Minerals, Metallurgy and Materials (IJMMM, ISSN 1674-4799, CN 11-5787/TF, monthly, started in 1994, formerly known as Journal of University of Science …
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DOI: 10.1016/S1005-8850(08)60067-5 Corpus ID: 109060714; Backup roll contour of a SmartCrown tandem cold rolling mill @article{Yang2008BackupRC, title={Backup roll …
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1200 mm narrow strip for a 2180-mm tandem cold rolling mill, and the work roll contour optimization was proposed to solve the control problem for narrow strip flatness. However, the roll contour was only suitable for a certain strip width and cannot simultaneously address the prob-lem of strip flatness for both narrow strip and ultra-wide strip.
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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 …
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The optimal roll profile parameters were applied to a six‐high five stand tandem cold rolling mills, which improved the flatness quality of the DP780 steel strip. Abstract: The multi‐objective optimization of the SmartCrown intermediate roll profile for a cold rolling mill was proposed in this paper in order to improve the strip flatness ...
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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 named CVR ...
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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). After tracing and testing, the application of the conventional crown backup roll matching the SmartCrown work roll of the production mill led to heavy and …
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Abstract. 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 …
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A novel, time-varying stability criterion is proposed to evaluate mill stability. Further study is provided on the optimal friction coefficient and reduction ratio required to increase the critical rolling speed and vibration stability in a tandem cold rolling mill. This mathematical criterion is validated by comparing the actual rolling speed ...
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The usual products of these mills are hot and cold plates and sheets. 4. Cluster Rolling Mill ... In the planetary mill type of rolling machine, a large backup roller is surrounded by a number of planetary working rollers as shown in the figure. ... In this tandem mill types of rolling mills, It includes a number of non-reversing two-high ...
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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 named CVR (CVC-VCR ...
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The integrated design of roll contours for EDW (Edge Drop Control Work Rolls) and matched VCR (Varying Contact Backup Rolls) were developed to decrease …
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Backup roll contour of a SmartCrown tandem cold rolling mill. 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).Backup roll contour of a SmartCrown tandem cold rolling mill,SmartCrown …
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The roll deformation model of the six-high rolling mill is one of the core models of the strip shape control theory. The influence function method (IFM) is a numerical method applied to solve the roll deformation problem. This study aims to address the problems of slow calculation speed and insufficient calculation accuracy of IFM in …
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Request PDF | Backup roll contour of a SmartCrown tandem cold rolling mill | SmartCrown was a new system developed by VAI for improving the strip profile …
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The new SmartCrown profile and flatness control technology was first adopted in a wide strip tandem cold rolling mill. Through studying on the function structure and …
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For the SmartCrown tandem cold mill, two aspects of work have been done: one is proposing the Smart-Crown plus work roll contour based on the optimization of …
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The configuration of conventional backup and work rolls for revamped 1700 tandem cold rolling mill at WISCO was proved unreasonable by systematical test as the cause of work roll edges contact during thin strip rolling and unsatisfactory flatness of product.A 2-dimensional varying thickness finite element model of roll system deformation was built …
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and crown control in tandem cold rolling mills. Chang et al. [14], Lu et al. [15], and Xuan et al. [16] proposed the reasons of edge drop in the silicon strips cold rolling for the four-high rolling mills and six-high rolling mills, and the edge drop was improved to a certain extent. Malik and Grandhi [17]
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A one-dimensional model presented by Suryanarayana [A set-up model for tandem cold rolling mill, M.Tech. Thesis, IIT, Bombay, 1998] is used to calculate the power in the present work and its predictions are compared with available experimental and numerical results and are presented in Appendix A. D. work roll diameter. Db. back-up …
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Therefore, a novel approach for the roll contour evaluation was proposed by constructing the multi-objective function of the taper-work roll shifting. With edge drop control as the primary goal, the optimal range and suitable range of the WRS for dierent roll contours were calculated for the rst stand of the tandem cold mill.
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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 …
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The optimal roll profile parameters were applied to a six‐high five stand tandem cold rolling mills, which improved the flatness quality of the DP780 steel strip. ... roll contour configuration ...
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1 Integrated Design of Roll Contours for Strip Edge Drop and Crown Control in Tandem Cold Rolling Mills Cao Jian-guoa,b,*, Chai Xue-tinga, Li Yan-lina, Kong Ninga, Jia Sheng-huic, Zeng Weic a School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
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DOI: 10.1016/S1005-8850(08)60067-5 Corpus ID: 109060714; Backup roll contour of a SmartCrown tandem cold rolling mill @article{Yang2008BackupRC, title={Backup roll contour of a SmartCrown tandem cold rolling mill}, author={Guang Hui Yang and Jianguo Cao and J. Zhang and Shenghui Jia and Renwei Tan}, journal={Journal of University of …
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The developed phi 530 mm X498 mm backup roll was installed in a pilot mill and the rolling test was carried out to prove the effectiveness of the newly developed back-up roll. The rolling tests ...
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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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Sun et al. proposed a taper-work roll contour for a four-high tandem cold rolling mill that used a sixth-order function curve to replace the straight line. Cao et al. [ 25 ] developed the edge drop control work roll (EDW) for four-high tandem cold rolling mill that used a two-part curve instead of a traditional straight line, including an edge ...
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