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Internet of things (IoT) drive system. Hybrid AGC A hybrid AGC for a single-stand rolling mill provides an example of acting on the data that has been collected and analyzed in the sensing and thinking steps (see Fig. 4). The previous control system used the roll gap to control strip thickness and tension reel current to control strip tension.
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6. Troubleshooting AGC Servo Hydraulic Cylinder in Mill . 6.1. Fault Analysis AGC Servo Hydraulic Cylinder Position Control in Rolling Mill . The position control fault can also be said to be the hydraulic cylinder position sensor fault in the rolling mill hydraulic AGC system, which is caused by the abnormal measurement value of the
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In such a factory the process critical equipment is the cold rolling mill and as such much concern is devoted to guarantee its normal operation. It is in this context that PS thought of Expert Systems as tools for aiding maintenance personnel in troubleshooting the machine. Specifically they focused on solving electrical faults.
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AGC hydraulic servo cylinder weight is bigger, is installed in mill housing crossbeam bottom, for depressing form; Built-in pressure magnetic appearance is installed on the servoBcylinder.When changing the AGC hydraulic servo cylinder, need hang the hydraulic cylinder pull bar, and press pull bar, AGC servoBcylinder and pressure magnetic appearance are extruded the cylinder …
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Hydraulic Cylinder Repair. We offer hydraulic cylinder repair and installation. From the smallest mill duty cylinder to AGC cylinders. If your cylinder is bleeding by or just due for a preventative change we can handle the job. With years of experience maintaining AGC systems throughout the country we can handle any task.
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Roughing mill Coil box Flying shear Finishing mill Laminar cooling Coiler ickness gauge F : A typical hot strip mill layout. Monitor AGC Hydraulic cylinder Gauge meter l v + + h + + S 0 S h X S M Sr F : Simplied schematic diagram of monitor AGC. thickness. e dead time inthisprocessiscausedbythe distance between the rolls and the gauge meter = V. ()
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This manual focuses on the MetalsMaster system designed to realize automatic gauge control (AGC) for metals rolling mill. MetalsMaster can work for various rolling mills. The version of the product outlined in this manual refers to the system that has direct digital control (DDC) function running inside the AGC controller.
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The computers running AGC algorithms required input from sensors in and around each mill stand, and the most important parameter was roll force. Load cells became critical components of AGC systems. Over the years many different kinds of roll force load cells have been developed and applied to mills - strain gage based, magnetic, capacitive ...
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As one of the most important functions of the basic automation of the rolling mill, the hydraulic gap control (HGC) is the inner loop of the automatic gauge control (AGC). Therefore, the good dynamic characteristics of the HGC system are very important to the AGC system . The HGC system consists of two-acting hydraulic cylinders per stand and ...
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Following the threading, dynamic control loops (AGC and AFC) are closed and corresponding actuators are activated. Then the mill speed is increased during the acceleration phase. Once the mill speed is up to the present maximum mill speed, the speed control system will keep the rolling speed in the vicinity of the maximum speed.
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CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The Force Feed Forward (FFF) System is the only hot strip mill AGC system in the world today which does not incorporate the BISRA principle for gage control. Instead, using a revolutionary control algorithm, FFF has proven in five installations in North and South America, that steelmakers need not …
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During theproduction process of steel strip, with the actual application situation of AGC system andthe problems in practical application are analyzed. Mainly AGC mathematical modelanalysis of control characteristics including Mill bounce equation, roll gapcompensation, the oil film compensating, tension loss compensation, backup ...
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As can be seen in Figure 8, the new AGC system achieves better thickness performance than the old AGC system. We have collected statistics data for 2 months and conclude from the data analysis that the average thickness qualified rate of the AGC system with new monitor algorithm is generally higher than that of the AGC system with old algorithm.
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Through analyzing the 760mm hydraulic AGC production line of a Shandong factory, the characteristics, compositions and the mathematical model of hydraulic system of the hydraulic AGC are introduced.
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• Maintained and troubleshoot the level 1 system AFC, HGC, AGC for the 1850 cold mill. • Examined installations and observed operations to ensure conformance to design and equipment specifications, and provided technical assistance to field personnel. • Expertly performed preventative maintenance and calibration of equipment and systems ...
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Repair of erasable memory module and checkout in the AGC The preferred way to supply erasable memory to the AGC is by repairing the actual module from this computer and running with it in tray B. As previously described, the module has a pin with open connectivity where we should have a inhibit line for bit 16.
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deformation due to mill stretch. In contrast, with monitor AGC, the sheet thickness is measured with a thickness measurement system at the delivery side of the mill stand, and the reading is fed back for screw-down control. Although these two methods were used for a
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Once within specification, AGC optimises the mill speed by adjustment of tension, load or gap. At the end of the coil, Auto-Slowdown ensures the product remains in specification for as long as possible and brings the mill to a halt with minimum amount of material left on the coil drum.
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the rolling mill system can be substantially improved by using the proposed controller. Simulation results are presented to illustrate the controller performance. Keywords: Model-Based Predictive Control, Neural Networks, AGC Systems, Steel Industry. 1. INTRODUCTION The development of new Automatic Gage Control (AGC) systems represents an
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mill products jumped 88% from June 2020 to June 2021 Two set of prices have declined since mid-June. Lumber prices, as measured at the mill by the trade publication Random Lengths and in the futures market on the Comex division of the CME commodities exchange, plunged from early May to mid-July. Comex copper futures also dropped.
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Mill service solutions. ANDRITZ Herr-Voss Stamco provides a wide variety of mill services to manufacturing facilities in the United States as well as Canada and Mexico. Our specialized knowledge and equipment provides us with the ability to inspect, grind, recondition, turn, chrome coat, and surface texture mill rolls.
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Salo R., The development of a production planning system for a paper mill. Thesis for M.Sc. (Eng.). University of Oulu, Department of Process Engineering. Finland 1980. …
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Automatic Gain Control (AGC) AGC is a system that controls the increase in the amplitude of an electrical signal from the original input to the amplified output, automatically. AGC is used in data processing to improve the visibility of seismic data in which attenuation or spherical divergence has caused amplitude decay ( Figure 5.3 ).
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The brain of our AGC system is an advanced Digital Signal Processor (DSP) motion control processor. Powered by an 80MHz Motorola DSP56303 processor, the DSP performs all AGC calculations providing critical analog and digital interfaces to the rolling mill.
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Be aimed at the difficulty problems that entrance variation in thickness and hardness variation change a lot、back-up roll deflection、roller thermal expansion、the variation of lubricating fluid and flow compensation indeterminacy of servo mechanism in the system of steel plate strip, anti-interference controller is applied to rolling mill AGC control system for the first time in this paper.
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The rolling mill control system is usually equipped with automatic gauge control (AGC), finishing temperature control (FTC) and automatic slab control (ASC) to make the exit thickness, temperature and flatness to satisfy the requirements. Low-inertia hydraulic loops are usually set between stands to control micro-tension of the strip.
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To manually test Mill on a small build, you can use the scratch folder: ./mill -i dev.run scratch -w resolve _. This runs the task resolve _ with your current checkout of Mill on the trivial build defined in scratch/build.sc. You can modify that build file to add additional modules, files, etc. and see how it behaves.
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August 2021 for five widely used materials. The index for steel mill products 3more than doubled, rising 111%. The PPI for copper and brass mill shapes soared 67%; aluminum mill shapes, 34%; and plastic construction products, 30%. Thus, contractors whose purchases are weighted toward any of these broad classes of materials are likely to
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The mill is normally fitted with automatic gauge control (AGC) system. The flange thickness for the cast beam blank is less than 50 mm. The slab or beam blank is usually heated with a continuous walking beam reheating furnace.
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system combined with positive methods such as absolute AGC, thereby suppressing thickness amplitude of the steady-state portion and reducing top-end off gauge length. Further, with a view to automating the avoidance of rolling problems in high-load rolling, a new excessive rolling force/ torque avoidance control function has been incorporated.
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