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block diagram of rolling mills and its working

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rolling of metals: process and principles (with diagram)

Dec 23, 2016 · 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

looper and tension control in hot rolling mills: a survey

Jul 01, 2007 · Block diagram of NIC-based looper–tension control: T v —time constant of main motor ASR, V ref —work roll peripheral speed reference, V r —work roll peripheral speed, w ref —looper motor angular velocity reference, w—looper motor angular velocity, PI—proportional and integral controller. Download : Download full-size image; Fig. 12

vss control of strip steering for hot rolling mills

Jan 01, 2005 · Fig. 4 shows a block diagram of the steering model, where yC is strip steering, yC0 is initial strip steering, is a constant which depends on rolling conditions, v is the entry strip velocity, S is the Laplacian operator, P is the total rolling load, b is the strip width, lS is the distance between bearings, lR is the roll face length, h is the exit strip thickness, H is the entry strip thickness, KH is the mill housing modulus, KF is the modulus between the work roll and the …

[pdf] block diagram model of lathe machine | semantic scholar

Block Diagram Model of Lathe Machine. This paper presents a computer aided method for the analyses and simulation of a non-linear mathematical model of a CNC Lathe machine tool. The derived model consist of the controller, axis drive and the spindle drive of a CNC turning machine and their connection through the cutting process

roll shifting system for rolling mills - united

The invention relates to a rolling mill of the 4 Hi Mae West type having cylinders for axially shifting the work rolls for a schedule free rolling operation, work roll balance cylinders are mounted in the Mae West blocks and as a result assume a varying off set axially relation with the work roll bearings, a control for the balance cylinders to compensate for the effect the offset conditions

cycloconverters - introduction with schematic, types and

Some other applications where Cycloconverters can be used are cement mill drives, ship propulsion drives, Rolling mills, and mine winders, washing machines, water pumps, and used in industries as well. If any further more queries on this topic or on the electrical and electronic projects leave the comments section below. Photo Credit

dc motor speed control : best and crucial controlling methods

A few of the examples are mine hoists, paper mills, lifts, rolling mills, and cranes. Apart from these two techniques, the most widely used technique is the speed control of dc motor using PWM to achieve speed control of a DC motor. PWM involves the application of varying width pulses to the motor driver to control the voltage applied to the motor

electric drive : block diagram, types, working and its

Jan 03, 2020 · electric-drive. The applications of electric drives mainly include industrial as well as domestic applications such as transportation systems, factories, fans, textile mills, pumps, robots, motors, etc. These drives are used as main movers used for hydraulic & electric motors, petrol or diesel engines, steam or gas turbines

us5267170a - method and apparatus for controlling rolling

According to this invention, a rolled sheet rolled by a reduction roll of a rolling mill is divided into a plurality of areas in a direction of its width, and sheet flatness or thickness values are measured in the plurality of areas. Bending forces, leveling value, shift amounts, and the like applied, by actuators respectively arranged at drive and work sides of the reduction roll, from the

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