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

agc control for mill - flyinfo.co.in. pdf agc control for 20hi cold rolling mill. Products Our company is a manufacturer and exporter of the crushers, serving the …

Automated gauge control (AGC) system has taken a wide area of the recent studies that deals with hot and cold rolling mill. These studies had concentrated to improve the …

Mass Flow, Automatic Gauge Control (AGC) is a technique used for many years to control strip thickness in Tandem Cold Rolling Mills. It enables tighter control of thickness by providing faster and more accurate control of the roll gap. Utilizing Mass Flow AGC control techniques permit operations to achieve specified thick-

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.

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

BACKGROUND OF THE INVENTION. 1. Field of the Invention . The present invention relates to automatic control methods and devices for rolling mills, and particularly to automatic strip thickness control methods for obtaining a rolled product having a desired thickness by means of a Sendzimir mill for rolling an electrical steel sheet or stainless steel sheet, apparatuses for …

in cold rolling using the self-adaptive AGC 2000X control system, developed by First Control. Long-term production experience from two installations will be shown, a new 12-high Mitsubishi cold rolling mill and an old Sendzimir mill. The improvements with self-adaptive control methods compared to conventional AGC control can be judge to at least

The flatness control in cold rolling mill is carried out through automatic flatness control (AFC). 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).

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A Cold Mill rolls coils of pickled steel from the pickle line at ambient temperature, using coolant oil. The cold mill produces steel and stainless steel and is also used for aluminum, aluminum foil, and copper. There are several types of mills such as 2-High, 4-High, 6-High, 12-High, 20-High, and Sendzimir Mills that have a variety of types of flatness control operations.

Automatic Gauge Control (AGC) The main target of the AGC control is to maintain a good thickness tolerance over the entire range of products in varying process conditions undependent of different materials, alloys, dimensions. A system is offered with an adaptive algorithm, different control strategies are available depending on the mill to realize the desired […]

Honeywell's Automatic Gauge Control (AGC) and Hydraulic Gap Control (HGC), incorporated with the MetalsMaster gauging system, enable mills to deliver the right gauge thickness with the least product variation. It also offers Target Adaptive control to increase yield, improve product quality and reduce scrap.

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 ...

Mill control. Automatic gauge control (AGC) of strip consists of conventional feed forward AGC (FF-AGC), roll position control AGC (BISRA-AGC) based on a gauge meter formula, and also monitor-AGC. In addition to these, mass flow AGC and an AGC system based on decoupling control are included. Mass flow AGC measures the actual running speed of ...

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

Mainly AGC mathematical modelanalysis of control characteristics including Mill bounce equation, roll gapcompensation, the oil film compensating, tension loss compensation, backup rolleccentricity compensation and so on. Study on various factors of AGC control aboutthickness changes in the process.

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 ...

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 …

agc system working method: on the basis of positioning control, is scaled roll-force by oil cylinder working-pressure signal upf, and divided by mill stiffness km, namely obtains the bounce...

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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.

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.

In this article the AGC (Automated Gauge Control) system, of a hot rolling mill is analyzed and different methods are described to improve its performance. The mill stretch compensation and other disturbances during the rolling process are

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 and consistently yields tight product tolerances for rolling precision.

The AGC system includes the following functions. (1) Absolute gage meter AGC ( ABS-GM-AGC ) (2) Mill Modulus Control ( MMC ) (3) Lock-on gage meter AGC (LKON-GM-AGC) (4) Monitor AGC (M-AGC) a) Integral type b) Smith's compensation (5) Load redistribution control (6) Gap compensation a) Mill stretch calculation b) Oil film compensation of back ...

Hydraulic AGC (Automatic Gauge Control) Cylinder and System is constructed by Hydraulic Mill for Sheet Gauge Rolling. We provide Total actuators, for Integrated hydraulic AGC cylinder which include Push-up cylinder with servo valve. Various types of our AGC (APC, AWC, HGC) cylinders have been selling well in the domestic markets as well as in ...

AGC (Automatic Gauge Control) - Roll force cylinders. welded bronze guide in cylinder. Roll force cylinders operate in the tough environment of steel mills, used in the manufacture of sheet and bar stock. Smooth and efficient operation of these cylinders is of utmost importance together with reliability and long life.

Automatic Gauge Control Cylinder BRANT HYDRAULICS offers a viable and professional alternative for repair and / or replacement of these most critical cylinders, with bore diameters typically around 1250 mm.