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The accurate control systems of strip shape and edge-drop have been developed for the new tandem cold rolling mill in Yawata Works, which has 5 stands of 6 Hi-UC·WR shift mill.
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Research and Development Trend of Shape Control for Cold Rolling Strip. Dong-cheng Wang, Hongmin Liu, Jun Liu. Published 19 July 2017. Engineering, …
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A simulation model for predicting the shapes of cold-rolled strips in 20-high Sendzimir mills was developed, and its predicting accuracy was assessed experimentally. By this model, improvement of quarter buckles was shown difficult merely by conventional shape control actuators, i.e., lateral shifts and taper profiles of first intermediate rolls, …
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Research on Flatness On-Line Intelligent Control for the Wide Strip Steel Cold Mill [D]. Qinhuangdao: Yanshan University, 2008 (in Chinese). ... PENG Yan, ZHENG Zhen-zhong, LIU Hong-min. Simulation Research of Cold Rolled Strip Shape Control in 6-Roller HC Mill [J]. China Mechanical Engineering, 2000, 11(9): 1061 (in Chinese).
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Robust Shape Control in a Sendzimir Cold-Rolling Steel Mill 1651 Note that, by virtue of the parameterisation in eq. (9), no attempt is made to control the high-order profiles, which accords with normal rolling practice. Parametric shape variations (with desired values of zero), which are shown as the output in Fig. 5, are given in Fig. 9.
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Hot-rolled steel strip has been one of the most widely used industrial raw materials. ... Based on the strip shape theory and the actual shape control capability of the CVC mill, the combination of CVC shifting position and bending force that can meet the target roll gap profile is always diverse. ... Jia SH, Zeng W (2018) Integrated design of ...
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The shape control of the cold rolling process is realized by equipment technology, including the series of 6-high crown control mill technology [ 4 ], pair …
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Accordingly, the flatness quality of cold-rolled strip is more important than the thickness profile in CD control, and a shapemeter roll is usually equipped at the end stand of a tandem cold rolling mill, as well as a high-precision flatness control system based on real-time flatness measurement signals is applied to the production process of cold …
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WEBThe application shows that the optimized bending force setting value decreases the average shape high point from 16 to 8 IU in actual production, which can …
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Edge drop control technology of a hot- and cold-rolled strip is an important means to improve the transverse thickness accuracy of the strip. ... This paper only discusses the work roll of an UCM six-high mill shape improvement. If the roll diameter becomes smaller, the roll will produce a larger transverse deflection along the rolling ...
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Introduction. In recent years, with the increasing of downstream manufacturers' requirements on the quality of cold-rolled strip products, the shape quality requirements …
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The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness.
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Non-Reversing Single Stand Cold Mill. Technical Data: Material: 1xxx～6xxx series. Product thickness: min.0.1 mm. Width range: 1,000mm～2,150 mm. Max Rolling Speed: 2,000 m/min. Our Solution: The application of the Universal Cold Mill (UCM) principle and coolant spray zone control delivered excellent shape control, and made high-speed …
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The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, …
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Further development of the sheet steel technology involves the integration in a single cold-rolling control system of coiling cold-rolled strip tension control subsystem, depending on the metal quality (mechanical properties, surface condition, etc.), the parameters of the mill reeling block, as well as the rolling modes (degree of deformation ...
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Aiming at the problem of high precision shape quality of cold-rolled strips, J. G. Cao et al. ... It indicates that the shape control ability of the UCMW rolling mill is still not strong within the current-used range of the roll bending force in the field, but the shape control ability of the work roll bending force is more than 10 times that ...
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Generally, the main edge drop and crown control technologies have been widely applied to the newly-built 6-high tandem cold rolling mills with combination of various effective methods as described above, such as the 6-high CVC with EDC system of 5-stand tandem cold rolling mill at Beeckerwerth Works in 1998 of Thyssen Krupp Steel in …
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To this day, research on the flatness control of cold-rolled strips is still being refined and improved ... Wang et al. proposed a combination shape control strategy for the strip's deficiency of quartic term shape control in a 6-high cold rolling mill to achieve fast and accurate control of flatness defects. However, these studies are mainly ...
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When it comes to producing steel in a cold rolling mill, optimizing shape and flatness is critical in order to create the best surface quality. To achieve this you need an effective roll cooling process in place to reduce defects …
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Accordingly, the flatness quality of cold-rolled strip is more important than the thickness profile in CD control, and a shapemeter roll is usually equipped at the end stand of a tandem cold rolling mill, as well as a high-precision flatness control system based on real-time flatness measurement signals is applied to the production process of ...
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Shape is an important quality index of cold rolling strip. Up to now, many problems in the shape control domain have not been solved satisfactorily, and a review on the research progress in the shape control domain can help to seek new breakthrough directions. In the past 10 years, researches and applications of shape control models, …
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What is handled in tltis paper is, an automatic shape controller, which is developed to minimize tlle fluctuation of shape deviation and to gel symmetric shape. …
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For the cold-rolled 316L/Q235B composite plate, a certain tensile load is often applied during on-line heat treatment [23, 38, 39]. To investigate the influence of tensile load on the residual ...
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nition and control for cold-rolled strip. Journal of Iron and Steel. Research, 2013, 25(12): 2–7. (in Chinese) ... 6-high cold tandem mill based on shape control ability. Journal. of Central ...
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To determine the exact distribution of tensile stress in a cold rolled strip, tensile stress evolution caused by lateral uneven velocity distribution outside the deformation zone of the strip is examined. The finite difference method is employed to solve the problem. Different factors, including the strip width and the form and amplitude of the …
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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. 2 a or line FG in Fig. 2 b). The bending action on …
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The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness. Previous approaches to the problem suggest storing a large number of precompensator matrices …
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Innovations in Shape Measurement and Control for Cold Rolled Flat Strip Products. Mark E. Zipf VP – Control & Automation Technologies Intergrated Industrial Systems, Inc. 475 Main St ...
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In order to meet the shape control requirements of "dead flat" transverse thickness profile of electrical steel sheet in cold rolling process, the 3D finite element model (FEM) for roll stacks and strip of 6-high tandem cold rolling mills (TCMs) was built with the developed Edge Drop Control Work Rolls for Non-shifting (EDW-N). The efficiency …
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The strip shape inheritance model is widely applied to improve the strip shape quality in tandem cold rolling (TCR). However, the inheritance mechanism is still currently unclear. To bridge this gap, this paper presents a new numerical method for calculating the strip crown inheritance factor. In addition, the effects of the entry strip …
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