قائمة الطعام
In the cold rolling process, the web winding system (WWS) of reversible cold rolling mill, as a high precision mechanical-electrical system, plays an important role in the stable operation of rolling. The non-linear model of the WWS is characterized by a relatively strong coupling relationship between the winder tension, the main mill velocity and the unwinder …
Rolling Mill Shape Control System Description. Cold rolling mills are an abundant source of control problems. ... The problem of keeping the roll edge flat is called shape control. Numerous cooling sprays are located across the roll, and the flow through each spray is controlled by a valve. The cool water sprayed on the roll reduces the thermal ...
This system was successfully used in Angang 1250 mm HC 6-high reversible cold rolling mill. Then the shape index and the quality stability of cold rolling strip were increased significantly, the errors between the calculated values and measured values of the total tension were less than 3%, the precision of shape detecting is 0.2 I and shape ...
FAGOR reversible rolling mills guarantee high productivity, with speeds of up to 2000 m/min and quick roll change, automatic load feed and control by computerised process modelling. Our half-a-million ton per year range rolling mills provide the best performance-to-price ratio on the market. The rolling mill stand has spraying
The 20 cold rolling mill of AT&M is equipped with high precision Automatic Gauge Control (AGC) system and convenient rolling procedure management system, with characteristics of high rolling speed, accurate thickness, excellent shape, stable control etc. During rolling process, control accuracy of strip thickness could achieve within 2% of the ...
In cold rolling metals in multi-stand mills with parallel rolls in adjacent stands unequal tension across the strip width causes faulty shape. In order to control the process it is essential to determine and measure the discrepancy in shape. The present invention is directed to this feature and is briefly illustrated in FIG. 5.
Research on shape control system of four-high reversible cold rolling .mill. Metallurgical Automation, 19(1):8-12. Yang, J., X.D. Guan (1996). Characteristic analysis and control algorithm design of shape control in hydraulic bending roll .system. Proceedings of Chinese Control and Decision Conference, 11051108. Chai, T.Y. (1985).
Third, robust controllers for the rolling mill system's current inside loop are designed based on the cascade control thought, so as to realize the tracking control for the speed and tension of reversible cold strip rolling mill. Theoretical analyses show that the resulting closed‐loop system is stable.
Le Liu, Suyan Ding, Jie Gao, Yiming Fang, Adaptive Nonsingular Terminal Sliding Mode Backstepping Control for the Speed and Tension System of the Reversible Cold Strip Rolling Mill Using Disturbance Observers, IEEE Access, 10.1109/ACCESS.2019.2956188, 7, (171246-171259), (2019).
provides total solutions for the control systems to achieve stable operation for rolling mills, process lines and the other machineries. ... Product/Solution. Steel plant control systems. Hot rolling mill control systems; Cold rolling mill control systems; ... We introduce "High-accuracy strip thickness control technology" and ...
Cold Rolling Mill. AGC Hydraulic 6 Hi Cold Rolling Mill 700mm Carbon Steel 390m / min Speed. Automatic Cold Reversible Rolling Mill 4 Hi 650mm AGC Screw Down Type. Rigid 20 High Cold Rolling Mill Machinery, High Precision Stainless Steel Rolling Mill. Temper Rolling Mill. Hardened Temper Rolling Mill Four Roller For Carbon Steel High Elasticity
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, shape control …
12%The shape detecting system was successfully used in Angang 1 250 mm HC 6-high reversible cold rolling mill. The precision of shape detecting is 0.2 I and the shape deviation is controlled within 6 I after the close loop shape control is input.
Cold rolling, hot rolling, plate shape control technology, including design and optimization of roll shape; ... Complete sets of equipment and technology for dual stand reversible cold rolling mill. The technology chooses different rolling passes according to the material, specification and production conditions of the rolled strip, so that the ...
Research and Development Trend of Shape Control for Cold Rolling Strip 1249 123. strip shape exists in the ultra-wide strip rolling process, and ... cold rolling mill was established by Bai, et al. [35]to control strip edge drop and keep the rolling process stable.
China 4- Hi Reversible AGC Cold Rolling Mill for Stainless Steel, Find details about China Rolling Mill, Machinery from 4- Hi Reversible AGC Cold Rolling Mill for Stainless Steel - Tangshan Weilang Trading Co., Ltd.
Used 15.5" United 4-Hi Cold Rolling Mill for Steel: RM-450 in United States. Manufacturer: United 15" cold mill for steel / very nice mill !!! Manufacturer - United Engineering / new 1950's - Upgrades in 1995 = revamped, new thyristor drives, new hydraulic screwdowns, and new AGC Status - Installed, under p...
Abstract： With the development of economic and social, the proportion of cold-rolled strip steel in total steel consumption continues to increase.The thickness and shape of strip are important quality indicators. Automatic gauge control is one of the key technologies in strip rolling fields. It is directly related to the product quality and economic efficiency.
China 6-High Reversible Cold Rolling Mill, Find details about China Cold Rolling Mill, Rolling Mill from 6-High Reversible Cold Rolling Mill - Hebei Moran Environmental Protection Technology Corp.
The automatic flatness control system, IHI Sheetflat, has been applied to many cold rolling mills since 1985. The pneumatic type shape roll is used as the shape sensor. Recently, requirements for quality products have become much more important. Therefore, performance of the shape roll has also been improved to meet the requirements. Strip shape is evaluated …
When cold rolling thin steel strips with high tensile strength, reversible cluster mills are used. The customer's demands are high on the products flatness, which is controlled by the different flatness actuators that the mill is equipped with. The objective of this thesis was to find an optimal CVC shape on the shifting inner second ...
Reversing Cold Mills (RCM), consisting of a rolling stand, are the ideal plant type for an annual production in the range of 100,000 to 500,000 tons. They can roll a wide range of steel grades. Reversing cold mills are also a good solution for demanding silicon or stainless steels. We offer you the right type of stand for every product mix.
Comparing electric rolling mill prices. You can easily wholesale quality electric rolling mill at wholesale prices on Made-in-China.
The purpose of the reversing mill is to reduce the thickness of the steel to the customer's specifications. The hot roll band passes back and forth between the rolls until it reaches the specified thickness. Benefits of reversing mills include: Flexible, low-cost rolling of a wide range of products. Tight strip thickness and shape tolerances.
Zhang et al. adopted GA to optimize PIDNN and proposed flatness intelligent control method based on GA-PIDNN for 900 HC reversible cold rolling mill in this paper . Wang et al. proposed a new multivariable optimization algorithm with global convergence for a cold rolling mill flatness control [ 3 ].
This paper investigates the decoupling and coordinated tracking control problem for the speed and tension system of the reversible cold strip rolling mill. Using a diagonal matrix decoupling network and neural network disturbance observers, we propose a command filter-based backstepping control strategy. First, the diagonal matrix decoupling network is …
Controlling the hydraulic automatic gauge control (HAGC) of cold reversible rolling mill is a significant engineering challenge mostly because of the complexity of the interactions between the process variables, the nonlinearities which change with the operating conditions, the time delay generated by the thickness measurement, and the long-time delays …
In order to lucubrate the rolling characteristic of the two stands reversible cold rolling mill and establish the tension and thickness control strategy, the steady-state characteristic simulating ...
Delivery of the new control solution for the company's 1320mm, two-high cold rolling reversible skin-pass stainless steel mill, will begin in October 2020. It will help to improve mechanical performance and increase processing capabilities for Shanxi Taigang's stainless-steel products, as well as improve strip surface quality and strip shape.
Single-stand reversing cold mills. Depending on the product mix, a single-stand cold rolling mill can deliver rolling capacities of 100,000 to 400,000 t/a. Rolling schedules can be carried out with an even or odd number of passes to maximize mill availability and performance.
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