digital hydraulic cold rolled plate automatic gauge control (AGC) system using high precision high fr...

In rolling mill, the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness, the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls, the exit thickness deviates periodically. In this paper, we design PI controller in outer loop for the strip exit thickness while PD controller is ...

AGC Algorithm HAPC ΔS HAPC Mill-Rolling Force S P 1ms P S S* Figure. 1. Siemens double-loop AGC control system diagram The Siemens thickness control system consists of the rolling force AGC (RF-AGC) and the monitoring AGC (MN-AGC). Which F1~F3 stands use RF-AGC, and F4~F6 stands use two control methods of RF-AGC and MN-AGC.

Title: Automatic Gain Control Agc Algorithm Users Guide Epdf Download Author: Institute of Electrical & Electronics Engineers(IEEE),SEG Books,Apress,Artech House,Springer,Plural Publishing,Springer Science & Business Media,Academic Press,CRC Press,Circuit Cellar,John Wiley & Sons,Elsevier,BiblioGov,Springer Nature,PageFree Publishing, Inc.,Cambridge University …

2 AGC Control Tasks The rolling accuracy mainly depends on the automated gauge control (AGC) performance. The main tasks of an AGC system include: Mill stretch compensation Lock-on gauge control Work roll thermal expansion compensation Oil film compensation of back-up roll bearings Work roll bending Tapering

Control methods: common electric pressing down and hydraulic pressing down through AGC system. 3. Equipped with hydraulic bending working rollers which can fast adjust the gibbous degree of rollers to …

AGC is computer controlled with hydraulic low-friction cylinders, servo-valves, and high-resolution linear encoders. PC and PLC based controls are used for implementing proven DGC and thickness gauge control for final thickness monitoring and control. The control console is an operator friendly HMI touch screen for digital and analog data display.

SEA-CAS provides our Automatic Gauge Control (AGC) for all types of cold rolling mills. Providing basic control from feedback to the more advanced massflow, SPC included. Seemless machine integration with discrete digital I/O or fieldbus communication.

AGC. 1. BASICS OFBASICS OF AUTO GAUGE CONTROLAUTO GAUGE CONTROL. 2. .. IntroductionIntroduction RollingRolling is a is a metal formingmetal forming process in which metal stock is passed through a pair of rolls. process in which metal stock is passed through a pair of rolls. Rolling is classified according to the temperature of the metal ...

3.1.1 Thickness control technology Thickness control is the most basic technology in plate rolling. At its 3 plate mills, JFE Steel has con-structed a plate thickness control system comprising high-response AGC (hydraulic automatic gauge control), sensors such as the γ-ray thickness gauge, and high-accuracy computer models, thereby establishing an

Research on 760mm Hot Tandem Mill Hydraulic AGC Control System. Article Preview. Abstract: 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. Based on those the system performance is analyzed on the ...

Rollware has developed a batch new technologis for plate and strip rolling. New Process Automation System, New Profile and Flatness Control System, Dynamic AGC system, New Tension and Looper …

The rolling speed of the mill is also changed in the FGC section so that the AGC control signal does not exceed the limited value and the interstand tension deviation is suppressed. The AGC …

why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1) Conservation of mass dictates that the mass per unit time entering the mill must equal the

The AGC and ITC systems were implemented in the Reliance Automax mill drive controllers. Hydraulic gap control (HGC) and work roll bending pressure regulation were performed by discrete hardware with target reference generation by the mill drive controllers.

The application results of the control strategy in the power plant show that the optimized control logic can meet the load regulation requirements of different AGC modes for the lignite burning unit, and the steam temperature and steam pressure control effect is good in the process.

The novel GM-AGC system has been applied successfully in a hot strip mill, the application results show that the thickness control precision is improved significantly, with the novel …

The control system regarding flatness and thickness of the strip in tandem cold rolling mill is generally multivariate, non-linear, and strong-coupling. In this paper, a decoupling predictive …

Monitor automatic gauge control (AGC) based on hydraulic roll gap control system is widely used in modern strip rolling mills [4–7]. In monitor AGC system, gauge meter is used to measure strip gauge derivation, which is installed at the delivery side of the finishing mill. The strip thickness can be controlled by adjusting the roll gap.

US3851509A US30372572A US3851509A US 3851509 A US3851509 A US 3851509A US 30372572 A US30372572 A US 30372572A US 3851509 A US3851509 A US 3851509A Authority US United States Prior art keywords roll gauge roll stand stand speed Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

FirstOpNet DCS system for Cold Rolling Mills with adaptive control. The DCS control system designed by First Control is based on modern control technology with self-tuning control to achieve …

Fig 1 Structure of a typical automation system for hot strip mill process. Level 0 – It is the lowest level of control and includes, for example, the control loops for hydraulic capsules used to position the rolls in the rolling mills and for the main electric motors powering the mill.. Level 1 – It is primarily concerned with in-piece control. At this level, the quality parameters such as ...

The application results of the control strategy in the power plant show that the optimized control logic can meet the load regulation requirements of different AGC modes for the lignite burning …

The control tasks which are to be achieved in the Level 1 closed-loop control for cold rolling mill concerns not only the thickness (AGC) but also the flatness (AFC). For a strip subject to cold rolling, the flatness is defined as the amount of internal stress difference along the width of the material.

This increases AGC accuracy. Mill Pacing Control. Mill pacing controls forecast time schedules of the entry facility, rolling mill, and delivery facility. This optimizes entry facility (Pickling) speed and rolling …

above control systems, a desired elongation is realized by control-ling the rolling force of the mill by a hydraulic screw-down control system. 2.3 AEC for skin pass mill of continuous processing line 2.3.1 Conventional AEC methods and their problems In most cases, an …

Title: Automatic Gain Control Agc Algorithm Users Guide Epdf Download Author: Institute of Electrical & Electronics Engineers(IEEE),SEG Books,Apress,Artech House,Springer,Plural Publishing,Springer …

In this mill, all the AGC control functions are self-adaptive. The AGC system has now been in operation for about 16 months. The AGC performance for all coils rolled from June 16 1998 to April 30 1999 is shown in figure 2 and in table 1. The

Video of a 4HI Cold Rolling Mill with Automatic Gauge Control, commissioned by MNC

Submarine Steel Plates made by Brant Hydraulics AGC Automatic Gauge Control cylinder, The hydraulic AGC cylinder manufactured by Brant Hydraulics is the heart for making submarine steel …

2 AGC Control Tasks The rolling accuracy mainly depends on the automated gauge control (AGC) performance. The main tasks of an AGC system include: Mill stretch compensation Lock-on gauge control Work roll thermal expansion compensation Oil film compensation of back-up roll bearings Work roll bending Tapering

Machines around rougher mill control master, Automatic gauge control PC4: Slab cooling temperature control Figure 2 Configuration of computer control system for hot strip rolling mill Roll thermal crown …

control. Cylinder failures can shut a mill down, and cylinders that are not operating properly can adversely impact strip or bar quality. Preventive maintenance, precision repair and accurate testing are the key to ensure AGC cylinder performance is reliable …