Which type of drive/motor is used in a steel rolling mill ...
Answer: * Type of drivers motor used in steel rolling mill: Steel rolling mills are hot rolled and cold rolled. They are also reversible or continuous type. 1. Reverse hot rolling mills: Ward-Leonard method of speed control of DC motor is used. Induction motors and …
Used 2 High Rolling Mills for Sale | Surplus Record
Find new and used 2 High Rolling Mills for sale from suppliers near you. Fenn, , Canadian General Electric and more. ... 1" x 2" #EW100, 2 Hi finishing mill, manually adjustable roll, vari-speed drive, built in cabinet w/tooling, #28483. Mohawk Machinery Inc ... reversing hot slab mill, 1966, #6038. USA Machinery Corporation ...
ROLLING MILL STANDS - Casey USA
Rolling mill stands are historically made as a steel casting but today many are fabricated from cast slabs or rolled plate. The cross section of the post is measured in square inches (mm 2) which determines the housings separating force. Rolling mill stands can be designed as 2 high, 3 high, 4 high, 6 high or 20 high roll configurations.
DE2163862A1 - Two high reversing mill - with hydraulic ...
Low speed, high torque, reversible hydraulic motors are employed as direct drives for the rolls or spindles of hot rolling two high reversing mills. The use of these motors is cheaper in capital cost and speeds up the reversing time from 2.5 sec. for electric motor drives to 0.5 sec. The mills are used in steel mills, etc.
ABB drives in metals Medium voltage drives for improved ...
ABB drives in metals | 7 Hot rolling mill Converter configuration Hot rolling mill features Benefits of ABB medium voltage drives Typically very high torques and overloads are required Direct Torque Control (DTC) ensures highest torque quality over the full speed range The rolling mill stand is fed by one motor or by two motors in twin-drive
DC Drives Used In Hot Rolling Mill - YouTube
DC Drives used in hot steel rolling mill application in Thailand
Electric Drives and Motors Part-4 - Blogger
5. A flywheel is generally used in_____. a. A sugar centrifuge drive. b. A rolling mill drive. c. A paper mill drive. d. A cement mill drive. 6. In overhead travelling cranes_____. a. Short-time rating motors are used. b. Continuous minimum rating motors are used. c. Continuous rating motors are used. d. Any of the above
Page 1 of 3 DC Motors speed synchronization for rolling mills
DC Motors speed synchronization for rolling mills The project aims at designing a system which is capable of synchronizing the speed of the slave motor (motor-2) with the master motor (motor-1). This system finds very useful in paper mills, steel …
Roughing Mill - an overview | ScienceDirect Topics
John G. Lenard, in Primer on Flat Rolling (Second Edition), 2014 2.7 Generation III – Coil Box Hot Strip Mills. In the 1970s, Stelco of Canada developed the hot coil box designed for installation in hot strip mills ahead of the finish mill for coiling the transfer bar from the roughing mill and uncoiling it into the finishing mill. The coil box reduced the distance between the …
Encoders in motor drive applications - Drive Services
VFDs are used to control the motor speed or motor torque. The actual speed is either estimated (speed sensorless control), measured with encoder or not used at all (simple scalar control). Besides speed signal the rotor position is required in certain applications. Simplest scalar control (often called V/f control) does not have speed feedback.
Used 54" BWG Tension Leveling Line: TLL-195 for Sale at H ...
Manufacture - BWG - 1975 = New - 1999 = total rebuild (mechanical overhaul + PLC and DC electrics replaced with new) - 2019 = refurbished again and installed at another factory Strip Width: - 1350 mm max Strip Thickness: - 0.5 - 6.0 mm Line Speed:...
DC Motor For Steel Rolling Mills And Wire Rod Mills - DC ...
Our DC Motor is used for Steel Rolling Mills And Wire Rod Mills. Features: Fully laminated yoke construction offering excellent commutation- suitable for 6 pulse thyristor power supply; Skewed Rotor construction, ensuring low noise; Vacuum pressure impregnation for armature winding- ensuring high insulation strength. High dynamic response
New DC drives for rolling mill - Russula
New DC drives for rolling mill. 2013 - San Nicolás (Acindar) - Argentina. Related Projects. Control system upgrade for 500,000 ton/yr bar mill; Russula supplied DC drives to ArcelorMittal Acindar plant in Argentina. The DCS800 drives were …
Different types of variable frequency drives
Dc drives normally make use of thyristor technology and can be used for all applications listed above that are in nonhazardous areas. From a power network perspective dc drives operate at a power factor that decreases with a decrease in motor speed and injects harmonic currents that are roughly proportional to1/n in magnitude where n = 6k±1 ...
Rolling Mills Archives - Ray Jacobs Machinery Co.
Practically all the PLC system are siemens S7 and stands. DC motor drives are ABB with INDAR DC motors. (525V). Stelmor cooling roller table Structure are out of scope. Transformers for DC drives are out of scope (30000/525V). Attached some photos about equipment and warehouse where they are stored.
Large PWM Inverters for Rolling Mills
DC drives have been used successfully in rolling mill applications for many years. They have an excellent performance record meeting rolling mill drive requirements including; speed control accuracy, rapid speed control response, fast load recovery, and more. Speed Accuracy Many drives in a rolling mill run in a coordinated fashion using a ...
Variable Frequency Drives | Metal Processing Machinery ...
Tags Rolling Mills; AC Variable Frequency Drives. AC variable frequency drives vary in horsepower from 1 to 10,000. AC variable frequency drives are energy efficient. They only use the amount of electrical energy required for the job. In rolling mills, it is very common to use a fraction of the horsepower that is available.
4 High Rolling Mills for sale, New & Used | MachineSales
MACHINE 13308 Manaufacturer United Engineering USA Type Mill 4 High Reversing Rolling Mill Coil thickness (as used) 0.0078" - 0.060" (0.2-1.5 mm) Coil width Max 20" (500 mm) Line speed Max 960 fpm (300MPM) Material Stai
Rolling Mills | Metal Processing Machinery | American Steel
The conversion allows the standard 4-high rolling mill design to roll lighter gauges without the many deficiencies of a 4-high rolling mill. Our current equipment include: 26" x 72" 2-High w/Roll Bend 3.5" x 16" x 20" American 4-High w/Terminal Equipment 16" x 20" x 48" 4-High 2/3,000 HP DC Drives
Drive selection for rolling mills - Russula
Most existing rolling mills have DC drives; because until recently, AC drives did not have the performance necessary. Since all drives in the rolling train must have similar performance, early attempts at installing some AC stands in a DC rolling train required the detuning of existing DC drives.
DC/AC DRIVES | RMT TOOLS - Hot Steel Rolling Mill Plant ...
Rebar Mills Used for producing Rebars from Ingots or Billets with size of finished Rebar varying from 8 mm to 32 mm . Annual production upto 200,000(Two Thousand metric ton…
Rotatory Type Hot Rolling Mill Machine One AC Motor Drives Six
4 There are total 11 stands of rolling mill in the whole production line, intermediate rolling mill is "one AC motor drives six". finishing rolling mill is "one DC drives two" 6 The highest rolling speed of final products stands to roll Φ10mm. deformed bar is 8m/s. Equipment characteristic. 1. Rolling mill stand adopts pre-stressed type.
Leaders in World Class Drives & Automation Technology ...
Reputed manufacturer of Power Electronics, Drives and Automation Systems providing World Class Japanese Technology at Indian price. More than 1000 Plants Commissioned & 30,000 Drives Installed in 25 Countries. Best Reliable and Cost-effective Control Systems for Rolling Mills, Bar and Wire Rod Mill, Hot Strip Mill, Steel Processing Lines, Paper Mills, Wire …
Automation - Russula
After building the drives or DCRs, technical experts from our workshop can install or supervise the installation at your plant. Our engineers are experienced and specialized in AC and DC drive configurations and the rolling mill process, which reduces considerably the downtime of your rolling mill and expedites the switchover to the new drives.
ANALOG DC DRIVE - Anon Automation
ANALOG DC DRIVE. We offer high-performance and efficient range of DC Drives that is widely used for its compact designing and unmatched processing speed. Manufactured from high quality components, our DC Drives offer outstanding performance and durability. DC SRC/ thyristor drives and motors remain common in industries, such as metals, cranes ...
6RA80 DC DRIVE CONTROLLER - Entries - Forum - Industry ...
i am using 6RA80 DC drive controller for DC stand of rolling mill (500kw DC motor), every parameter of controller is perfect but once motor pass a single hot bar,the armature actual voltage and current both start flactuating, i tried to tune this using p50225 and p50226,but it is not usefull, kindly guide me how can we stop this current hunting
Application of AC motors and drives in Steel Industries
III. AC DRIVE FOR ROLLING STAND MOTOR AC synchronous motors are used for driving the roughing stand rolls in a rolling mill. Synchronous motors are used when power requirement is very high and speed of rolling is low. The R0/V0 stand motors of Hot Strip Mill of Rourkela Steel Plant are synchronous motor. These motors are driven by cyclo converter.
AIST - 2007 AISTech Conference Proceedings
DC drives and cycloconverters have been used in rolling mill applications for many years. The appearance of the IEGT (Injection Enhanced insulated Gate bipolar Transistor) or IGCT/GCT made the large PWM drive system practical. The newer 3kV IEGT device has been used to develop 3-level voltage source inverters in configurations up to 40MVA.
Rolling Mills Archives - Ray Jacobs Machinery Co.
Transformers for DC drives are out of scope (30000/525V). Attached some photos about equipment and warehouse where they are stored. All electrical equipment package is completely closed (white boxes in photo). Attached is WRM layout. Billet Sizes we have used are: 160x160x11,600mm and 210x160x11,600mm.