The great ai, a2, fJ -constants power drives used in mlnlng (hoisting machine t -timedrives) and metallurgy (rolling mill drives) require the application of motors which operation The minimization of the first addend J1=a1-1~8-':1 speed can vary from zero to about 200 rpm .
4.1.1 Rolling mill rolls 169 4.1.2 Roll neck bearings 186 4.1.3 Roll chocks 197 4.1.4 Mill housings 201 4.1.5 Mechanisms for roll adjustment and roll balance 205 4.1.6 Roll change device 217 4.1.7 Sendzimir cluster mills 220 4.1.8 Guides and repeaters 223 4.1.9 Guide tables and loopers 228 4.2 Mill Drive 229 4.2.1 Mill couplings 229
the special demands of rolling mills. Low voltage coordinated drives are designed for process line applications such as galvanizing lines, pickle lines, and strip and bar conveyors. Variable Frequency Drives TMdrive-70e2 Power levels: up to 36,000 kVA Voltage: 3,300 - 3,650 Vac Frequency: up to 75 Hz Main Drive Mill Motors Synchronous ...
Structure of a single chip FPGA-based controller for four rolling mill drives. Block diagram of the relative-coupling control structure for a four-unit motor drive system.
Working Principle of Rolling Process: The rolling process is a metal forming process, in which stock of the material is passed between one or more pairs of rollers in order to reduce and to maintain the uniform thickness. This process is mainly focused on the cross-section of the ingot or the metal which is forming.
The FBD (Function Block Diagram) technology in LogiCAD features the same structure and procedures as the CFC-Technik (Continuous Flow Chart) used in a PLC program-ming environment. ... ence the design of rolling mill drives, especially in the megawatt power range. Together with renowned suppliers, we devised and optimized new founda - ...
Cold rolling mill process flow chart Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Cold rolling mill process flow chart, quarry, aggregate, and different kinds of minerals.
FIG. 5 is a block diagram showing the 2-mass system shown in FIG. 4 in a control block. ... The rolling mill 1a is a rolling mill of a type that drives the upper work roll 2a and the lower work roll 2b by a single motor 9a and a single motor 9b, respectively. This is a configuration common in a roughing mill of a hot sheet mill or a plate mill.
The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.
rolling mill drives used block diagram. steel mill motor electrical circuit diagram watchdogin rolling mill drives used block diagram gogreen Cement Kiln Mill Motors Diagrams Shows the schematic diagram of a Rolling mill with control system for controlling Chat Online Observers for rolling mill drives with elastic shafts .
A machine used for rolling metal is called rolling mill. A typical rolling mill consists of a pair of rolls driven by an electric motor transmitting a torque through a gear and pair of cardans. The rolls are equipped with bearings and ... Diagram of Flat Rolling 14
Abstract We consider a problem of an on-line tuning of linear controller parameters used for a rolling mill drive control. A neural tuner of PI-controller for current control loop is developed. It allows to adjust KP and KI according to armature winding parameters values change. Moreover, if initial values of controller parameters do not provide required transients quality, proposed …
Journal of Materials Processing Technology, 34 (1992) 547-554 547 Elsevier Observers for rolling mill drives with elastic shafts Maciej Tondos University of Mining and Metallurgy AI.Mickiewicza 30, 30-059 Cracow, Poland Abstract In the paper principles of estimation of non-measurable state variables and external torque load in the drives with …
Rolling of Metals Process and Principles With Diagram . 2021 10 27 The rolling process is shown in Fig 2.1 Rolling is done both hot and cold It is accomplishes in rolling mills A rolling mill is a complex machine having two or more working rollers supporting rollers roll stands drive motor reducing gear flywheel coupling gear etc Rollers may be ...
It is widely used in actual industrial drive systems like rolling mill or elevator system. Fig.7 shows its block diagram. The difference between the output of the motor model and the actual motor speed is added to the torque command. One of the advantages of SFC is that SFC is the optional function and that SFC gain can be easily adjusted on site.
Originally, this phenomenon had been described in traditional big drives used in industry, such as rolling-mill drives, conveyer-belt drives and machines used in textile and paper industries [9,10,11]. Large inertias of motor and load machines and long couplings create a visible model of the so called two-mass system.
A system for controlling the output of a rolling mill. An intelligent control system is part of a control loop between the mill and a PID controller. The control loop does not rely on the output of an exit gauge sensor in normal operation. The intelligent control system can be an artificial neural network or a parallel cascade network, and has an output node for generating an output signal ...
block diagram) technology used in logi.CAD is absolute-ly comparable with the CFC (continuous flow chart) ... 2 x 12-MW twin drive of a heavy plate rolling mill. SMS SIEMAG Electrics und Automation 12 The development of high-strength steels has led to altered rolling processes that also make higher
An H ∞ speed controller design method for hot rolling mill drives, #4 drive system in #2 hot rolling mill of POSCO, is proposed. A weighted mixed sensitivity minimization method is used for obtaining an H ∞ speed controller, and loop shaping is used for improving speed tracking performance. The designed speed controller guarantees the robust stability of closed …
The FBD (Function Block Diagram) technology in logi.CAD features the same structure and procedures as the CFC technology (Continuous Flow Chart) used in a PLC programming environment. ... Main drives of a rolling mill. RELIABLE DRIVE SYSTEMS There are a large number of parameters that influence the design of drives, especially in the Megawatt
A functional block diagram, a neural network structure, and a rule base are shown. Two sets of modelling experiments are conducted with a roll mill model. ... Russia Abstract We consider a problem of an on-line tuning of linear controller parameters used for a rolling mill drive control. A neural tuner of PI-controller for current control loop ...
Powerful gears in rolling mills. March 1, 2000. After many years of service, the gears in a hot-strip rolling mill must be replaced. But, the new gears face a dual challenge. Raymond J. Drago and ...
The AFC functions are typically performed in the same PC-based computer system hardware used to implement the automatic gauge control (AGC), interstand tension control (ITC) and mill setup models. The following schematic diagram shows the overall layout of the AFC system for a 4-high mill with CVC work roll side shifting.
motors, drives, PLCs, and process computers among other components. ... 's steel industry control systems are used in hot rolling mills, cold rolling mills, and processing lines. Steel plant equipment includes mechanical parts ... Fig. 1—System Block Diagram of PL-TCM.
The mechanisms control scheme and the signals transmission scheme of the rolling mill were composed. The block diagram of the screw-down mechanism motion control system was developed. The simulation results were compared with the data of electromechanical screw-down mechanism of the Magnitogorsk Steel Works hot plate rolling mill "5000".
application is the drive used in a steel rolling mill. The drives are used in power levels varying from a few kW up to the MW ranges. Modern day drives also include various built-in facilities for monitoring, protection and fault ... Block diagram of an industrial drive.
• Cement mill drives • Ship propulsion drives • Rolling mill drives • Scherbius drives • Ore grinding mills • Mi ne winders 1.Operation Principles: The following sections will describe the operation principles of the cycloconverter starting from the simplest one, single -phase to single -phase (1 φ-1φ) cycloconverter. 1.1.
2 Principles and Applications of Metal Rolling (ii) Shape of the rolled product- flat, sections or hollow sections rolling. (iii) Direction of rolling- lengthwise, transverse, and skew rolling. (iv) Mode of rolling mill operation- continuous (unidirectional), and reverse rolling, where direction of rotation of rolls are reversed. When two rolls of equal diameter and with axis lying in same ...
The block diagram of the CPC of SynRM based on FCS ... and Main Electric Drive of the Pipe Cold-Rolling Mill. Complete Solution ... and operational features of cold-rolling pipe mills, the ...
In a hot strip rolling mill a velocity damping compensator circuit is added to the current regulating loop of the looper motor drive generating a torque on the looper arm mechanism between roll stands, thereby to prevent disturbances when applying the looper arm and looper roller against the strip being rolled.