Aiming at the problem of high precision shape quality of cold-rolled strips, J. G. Cao et al. proposed a control strategy which is a whole-unit integrated shape for the strip cold rolling mill.
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The solution to the shape control problem for a Sendzimir mill, utilising the As-U-Roll shape actuators, is well understood. The tapered first intermediate rolls, however, provide a more powerful ...
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The key problems to be solved in cold-rolled strip shape measurement and control technology are: (1) Develop a shape meter with high detection accuracy, high roll surface quality, reliability and durability. ... Iron and Steel 1720 and Hegang 1550, the large-scale application of the large-scale strip steel tandem cold rolling mill flatness ...
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With the increasing demand on higher strip quality, the profile and flatness of hot rolling strips have become subjects of concern, particularly for compact strip product (CSP) hot strip mills. Based on the …
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DOI: 10.1016/J.JMAPRO.2018.07.008 Corpus ID: 139553445; Numerical and experimental analysis of strip cross-directional control and flatness prediction for UCM cold rolling mill
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This paper deals with the shape control methodology for Sendzimir cold-rolling steel mills. Due to the several problems which come from the Sendzimir mills' complicate structure, designing automatic shape control system for these mills was one of the main control issues in cold rolling industries. The multi-variable problem and model …
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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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Deals with the problem of shape (or flatness) control for Sendzimir 20-roll cold-rolling steel mills. Such mills, with a variety of shape actuators, offer the control engineer …
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The shape of cold strip for the stainless process has been become issue in quality recently, and hence POSCO developed an automatic control system for strip …
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As shown in Fig. 3, the UCM 6-high cold rolling mill is based on the ordinary 4-high cold rolling mill with the addition of an intermediate roll that can shift laterally between the work roll and the backup roll.Through the hydraulic roll bending system, applying a variable bending force to the end of the work roll or intermediate roll …
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The paper compares and contrasts various controller possibilities and is intended to provide a "cookbook" of shape control tools and strategies for Sendzimir mills. Deals with the problem of shape (or flatness) control for Sendzimir 20-roll cold-rolling steel mills. Such mills, with a variety of shape actuators, offer the control engineer considerable choice …
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Simulation of fuzzy shape control for cold-rolled strip with randomly irregular strip shape. J. Mater. Process. Technol. (1997) B. Berger ... (VCAS) technologies, can significantly enhance the cross-directional control capability of strip mill, and alleviate or eliminate complex high-order flatness defects. In this paper, the mathematical ...
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A model based on an artificial neural network (ANN) has been developed for prediction of flatness of cold rolled (CR) sheet in a tandem cold rolling mill for white goods applications. Various process parameters including roll bending, roll shifting, tensions between stands etc., which affect flatness of CR sheet are considered in the model. …
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To achieve this you need an effective roll cooling process in place to reduce defects commonly known as quarter buckle, wavy edge, and full shape or center buckle. Let's discuss the different factors of shape and flatness …
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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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capacity of 2 MTPA, through a 6 Hi mill and a tandem mill. Coils are rolled from between 0.40 mm and 3.2 mm in width and range from 200 mm to 1,625 mm in length. Our Cold Rolled Close Annealed (CRCA) products demonstrate high strength, ductility and uniform mechanical properties with close dimensional control and superior
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The hydraulic roll-bending device was studied, which was widely used in modern cold rolling mills to regulate the strip flatness. The loaded roll gap crown mathematic model and the strip crown mathematic model of the reversing cold rolling process were established, and the deformation model of roll stack system of the 6-high 1 …
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Every aspect of JSW PLTCM is designed to add precision and quality control to the cold rolled process. In this, pickling line is linked with cold rolling mill, which provides better shape control, delivers significant improvements with regard to mill productivity, yield, and production as a result of the elimination of strip threading and ...
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Due to its diverse control methods and powerful capabilities in controlling strip shape and cross-section, the six-roll CVC rolling mill is widely used in the production of cold-rolled silicon steel [5].
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Rolling mill system consists of several mills and the strip to be rolled passes between the mills to control the thickness and shape in hot and cold rolling [1] - [16], which affects the quality ...
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On the basis of the new technique of asymmetric shape control device, anti-symmetric roll bending for universal crown mill (UCM) cold mill, in this article, with ANSYS finite element simulation ...
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Keywords: UCMW cold rolling mill; finite element simulation; roll gap friction; shape control 1. Introduction In recent years, with the increasing of downstream manufacturers' requirements on the quality of cold-rolled strip products, the shape quality requirements on cold-rolled strips have become more stringent.
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Ball mill and roller mill; Spray dryers; Clinker cooler; Humidfication; Mist Elimination; ... Cold rolled steel is utilized in a wide range of applications throughout various industries, ranging from industrial buildings to kitchen appliances to filing cabinets. ... SELECTOSPRAY is an indispensable actuator for shape control. It corrects ...
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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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The HC-MILL has both a good shape stabilizing capacity and good shape control capacity which have never been seen in a conventional 4-High mill. 3 Results and Applications Figure 4 shows the relationship between optimum bending force and intermediate roll position ( text{HC}updelta) for flat shape of the rolled strip, when …
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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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This study focuses on improving the asymmetric shape control of a 1450 mm S6-High cold rolling mill through the use of asymmetric IRB (Intermediate Roll …
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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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A high-precision shape detecting system of cold rolling strip is developed to meet industrial application, which mainly consists of the shape detecting roller, the …
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