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Steel and rolling mill industry VEM Group. Drive solutions for steel and rolling mills for the toughest demands Drives in steel and rolling mills are exposed to extremely hard demands. Glowing steel, alternating operational modes and overloads spell out a high level of electrical get price

BREVINI MILL DRIVING CONCEPT: SINGLE DRIVE MULTIPLE DRIVE Multiple Drive concept is becoming more and more common. Main advantages are: To split torque/power for each Roller, according with the load of production Less power demand To have same size of Planetary Gearbox for each Mill Less spare part components Increase the EFFICIENCY of the .

Electric drives of the rolling and temper mill (Borovik, 2010), papermaking machines, lines for the processing different materials, test stands of mechanical helicopters transmissions (Tarasov ...

29/06/2011 · Dynamic interaction of electric drives in a rolling mill Dynamic interaction of electric drives in a rolling mill Krutikov, K.; Rozhkov, V.; Savvateev, V. 00:00:00 A computer model has been developed for the control of frequencycontrolled drives within a rolling mill; the model takes account of the drives' elastic interaction.

Electrical Drives In Rolling Mills TYPE OF ELECTRICAL EQUIPMENT OFFERED BY US : MCC PANELS : Motor Control Center Panels For Steel Rolling Mill Plant For AC Panels can be fixed type or draw out type, single sided or double sided as per Clients specifiions, totally enclosed type, floor mounted, dust and vermin proof.

24/02/2012 · Industries: Almost all the motors employed in the industries are controlled by power electronic drives, for eg. Rolling mills, textile mills, cement mills, compressors, pumps, fans, blowers, elevators, rotary kilns etc. Other appliions include welding, arc furnace, cranes, heating appliions, emergency power systems, construction machinery ...

Electric motors drive most machines .....13 Motors convert electrical energy into mechanical energy .....14 Frequency converters ... Examples are paper machines, rolling mills and saw mill lines. Indefinite shape Materials with an indefinite shape, such as various food products, plastics etc., are processed with plant equipment.

What is claimed is: 1. In an electrical control arrangement for controlling the speed of a rolling mill driving motor having an armature winding and a field winding supplied with electrical current from a supply network, the driving motor being coupled to and driving rolls of a rolling mill for manufacturing hollow blocks, the control arrangement including a speed controller for controlling ...

Flat Rolling •Roll Force: F= LwY avg •Rollstrip contact length L •Average strip width w –despite the fact that spreading, or an increase in width, may actually occur if edger mills are not used •Average true stress of the strip in the roll gap Y avg •Assumes no friction and thus predicts lower roll force than the actual value

20/10/2017 · This is one of the main appliions in which dc motors are widely used in fine speed appliions such as in rolling mills and in paper mills. 2. High starting torque: dc series motors are termed as best suited drives for electrical traction appliions used for driving .

20/05/2010 · Each rolling stand consists of a top and a bottom roll, driven through a gearbox by an electric motor. The rolls of the stands have contours or "grooves" machined into the rolls, so that the hot billet passing between the grooves is reduced in size and shaped by each subsequent stand. Typical motor sizes for modern mills is 600kW to 1200kW ...

4/07/2020 · However, electric drive system has two inherent disadvantages : ... Since it has high starting torque and variable speed, it is used for heavy duty appliions such as electric locomotives, steel rolling mills, hoists, lifts and cranes. Go back to Motor Types ...

Electrical drives are extensively used in the huge number of domestic as well as industrial appliions which includes motors, transportation systems, factories, textile mills, pumps, fans, robots, etc. These are used as main movers for petrol or diesel engines, turbines like gas otherwise steam, motors like hydraulic electric.

4. The energy lost in the form of electrical losses in the motor etc., Torque and Power in Cold Rolling *Power is applied to the rolling mill by applying Torque to the rolls and by using roll strip tension.*The total rolling load is distributed over the arc of contact.

on wear is another issue. Stresses from Hertzian pressure in 4high cold mill back up rolls were measured years ago, the results were never published, but of high interest also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_

The lower roller drive torque T equals the sum of the deformation torque T n1 and the friction torque T n2. Lower roller driven power. Lower roller driven power is: In the above formula: P – Driven power (m • KW) T – Driven force moment (KN • m) n 2 – Lower roller rotation speed (r • min1), n 2 =2V/d 2 (V is rolling speed)

6 Electrical Drives for Crane Appliion Nebojsa Mitrovic 1, Milutin Petronijevic 1, Vojkan Kostic 1 and Borislav Jeftenic 2 1University of Nis, Faculty of Electronic Engineering, 2University of Belgrade, Faculty of Electrical Engineering, Serbia 1. Introduction A crane is the type of machine mainly used for handling heavy loads in different industry

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25/10/2019 · Modern adjustable electric drives of rolling mills are commonly manufactured on AC with a twolink frequency converter. Stable operation of electric drives with active front ends can be provided at fulfilling certain requirements to supply voltage quality. In the systems of plant power supply at single gridtoground faults in the grid 110220 kV one can observe unbalanced voltage sags in the ...

Roller mill maintenance can be broken down into three general areas; rolls, bearings, and drives. Maintenance requirements may vary from appliion to appliion but are most directly linked to the horsepower connected to the equipment. Those machines with more horsepower connected will require more maintenance and attention. The

6/10/2018 · The article considers the results of modernization of the main electric drive of a finishing stand of a hot rolling mill. A functional diagram of the new microprocessor control system of the electric drive is presented. Distinctive features of this system are distinguished. With the help of the new mill diagnostics system transient processes of the stator and rotor currents of the drive ...

1/01/2015 · Keywords: electric drive, rolling mill, tension control, simulation, stand force interaction, size alignment. 1. Introduction On the modern bar and wire mills interstand tension is controlled at rolling [1, 2]. For a variety of reasons, ...