HUNGER Hydraulics USA: AGC (Automatic Gauge Control ...
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.
US Steel Mon Valley Works FFF System
Automatic systems were being considered to control the finishing mill, including mill setup, automatic gauge control (AGC), and run-out table spray control. As the finishing mill had older screwdown systems driven by electric motors and older looper systems, AGC upgrading solutions were evaluated based on performance, installation schedule, and ...
Automatic Gauge and Interstand Tension Control (AGC/ITC ...
The AGC/ITC functions are typically performed in the same PC-based computer system hardware used to implement the automatic sheet flatness control (AFC) and mill setup models. Before a coil is processed, the AGC/ITC system receives rolling schedule information from the mill scheduling system or via manual data entry.
Cold Rolling Mill Automation System – Detailed Case …
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.
Automation and Thickness Control in Hot Strip Mill – IspatGuru
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 …
Optimization of a Cold Rolling Mill - Thermo Fisher Scientific
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
adaptive_agc_control | First Control Systems AB
The control system will face a "new process" for each new strip entering the mill. This is exactly the kind of problems that are effectively solved by self-tuning regulators. First Control's self-tuning AGC Control uses only one regulator setup for all rolling. The regulator adapts by itself to different strip qualities and rolling speeds.
AK-CESCL Certification Training Program: Home
AGC-17-0161: Will: Barickman: AGC: AGC Anchorage: : Trasky: 400 Hits ~ Next 400 ~ Limit to 400 ...
Automatic Gauge Control (AGC)/ Hydraulic Gap Control (HGC)
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.
An optimized variable structure control for hydraulic AGC ...
The dynamic matrix control has succeeded to be applied in the industry field, so it is indispensable and feasible to explore its application in the …
AGC CYLINDER TESTING AND REPAIR - SMSgroup
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.
Research on Mill Modulus Control of Strip Rolling AGC ...
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 …
20Hi Cold Rolling Mill AGC - YouTube
digital hydraulic cold rolled plate automatic gauge control (AGC) system using high precision high fr...
Technological control for cold rolling processes
Thickness feedback control The basic control strategy is thickness feedback (monitor control) based on the measured thickness deviation at the exit side of the mill. The delay time, transport of the strip from the roll gap to the thickness gauge, essentially determines the control system's dynamic response, particular at low rolling speed.
Automatic Gauge Control in Rolling Process Based on ...
AGC thickness control of rolling mill is a control system with time delay; traditional AGC control methods cannot get satisfying control performance [13, 14]. According to control theory, to cope with the time-delay problem, we can take the Smith predictor scheme.
CN202271156U - Auto gauge control (AGC) hydraulic servo ...
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 …
Strip Thickness Control of Cold Rolling Mill with Roll ...
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 ...
ROLL ECCENTRICITY CONTROL WITH THE FORCE FEED FORWARD AGC …
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 …
Nonlinear control of the HAGC by backstepping with ...
trol (AGC) methods have been developed for cold mill processes. On the basis of a linearized model of the rolling mill system, in 1996, Hwang and his colleagues [1] propose a thickness controller using an internal mod-el control (IMC) structure which effectively rejects peri-odic disturbances. In 2002, the multivariable AGC is designed using ...
An Expert PI Controller with Dead Time Compensation of ...
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.
MetalsMaster AGC Automatic Guage Control
optimization and control parameters, quality data, control mode selection and fault conditions and diagnostics. Enhanced Visibility Real-time, intuitive human-machine interface (HMI) provides instant visibility into mill operating state, AGC and AFC performance, trends, alarms and process information so your operators know what's
An Expert PI Controller with Dead Time Compensation of ...
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.
Automatic Gauge Control in Rolling Process Based on ...
AGC thickness control of rolling mill is a control system with time delay; traditional AGC control methods cannot get satisfying control performance [ 13, 14 ]. According to control theory, to cope with the time-delay problem, we can take the Smith predictor scheme.
BLUEPRINT FOR EXCELLENCE | Primetals Technologies
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 ...
Automatic Gauge Control (AGC) – Koteko
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 ...
Hot Rolling Mill Hydraulic Gap Control (HGC) thickness ...
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
Upgrading of Hot Finishing Mill to 4-Stands, and ...
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 calculation Finisher set-up calculation/learning ABS: Absolute AGC ASC: Speed control CC: Current control COL: Coolant spray control
pdf agc control for 20hi cold rolling mill
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 …
Vollmer : Products - Strip Thickness
Radiometric. Our X-ray and isotope strip thickness gauges are characterised by their very lean design. With a minimum overall width of 120 mm, our C-frame gauges have room in even the most confined of spaces. Thickness control. The automatic thickness control closes the process loop: Using the results of the thickness measurement, we control the mill screwdown so that …
Decoupling control of automatic gauge control system in ...
Abstract: It's possible for different kinds of automatic gauge control (AGC) systems working simultaneously to impact and disturb each other while adjusting their moving directions. In order to implement a decoupling control, we modified the parameters and structure of the AGC system in a hot rolling mill. As a result, it was proved that theoretically, gauge …