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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.



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 …



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



Rolling Mill Machinery Exporter, Manufacturer & Supplier ...
Widely used for finishing the roiling wires, TMT bars and rods, these mills are wisely manufactured using best quality materials in strict tandem with the industry standards. We stringently test this finishing mill on various standard quality parameters such as strength, maintenance and durability.



Large PWM inverters for rolling mills
DC drives have been used successfully to meet rolling mill drive requirements, including speed control accuracy, rapid speed control response, and fast load recovery.



Hot Strip Mills - ingeteam
Hot Strip Mills. For this type of installation, Ingeteam supply mainly complete, turnkey solutions, comprising the following major equipment and services: Electric Equipment: in medium voltage switchgears, transformers, variable speed drives for alternate and direct current and corresponding motors, motors control centers, level 0 sensors and ...



Used 2 Hi Rolling Mills for sale. Demag equipment & more ...
2 HI 1 Stand Rolling Mill. Ref # 10368-HK. Manufacturer: CUSTOM-2 HI Mill: 10.5" W x 9" Dia. Work Rolls Manual Roll Adjustment Forced Water Cooled Rolls Both Rolls Driven Manual Outboard 43" Passline 5" x 7" Mill Housing Pushbutton Controls 20 HP AC Motor …



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



AC DRIVES AS REACTIVE POWER SOURCE
I also recommend to use AC drives for rolling mill. I have already installed AC drives for Cold Rolling & Hot Rolling Mill at Yogi Foils Pvt Ltd. I have also conducted trials on Pata Rolling mill ...



Applications of Electric Drives | Electrical Engineering
In dc drives, the speed of the paper making machine is controlled by varying the armature voltage of a separately excited dc motor. ... which are later drawn into wire), hot-strip mills (the mills used for rolling strips from slabs), cold-strip mills (the mills used for cold-rolling strips previously rolled on hot-strip mills to obtain sheets ...



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



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 ...



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.



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 …



Strip Blow-Off Systems - CECO Environmental
Jet*Star Strip Blow-Off Systems are designed to remove surface water from a moving steel or aluminum strip. Typical application is following a hot process such as a hot rolling mill. Download the Jet* Star Blow-Off Systems brochure. Jet*Star Blow-Off Photo. For more information about how CECO Metals will help your business grow with clean, safe ...



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 …



ABB to revamp POSCO plant Korea - Managing Aging Plants
ABB has won a contract to replace twin DC motors and associated drives with newer AC motor and drive technology on a hot rolling mill at POSCO's Pohang Works in Korea. Using ABB's large synchronous motors, AMZ, together with ACS6000 medium voltage AC drives, will help improve process efficiency, accuracy and reliability.



DC Motors | Metal Processing Machinery | American Steel
Rolling mills usually run around the clock, and DC motors may cause downtime and are expensive to maintain such as the continuous need to be machined, and of course, the brushes wear. However, the amount of maintenance on a DC motor, if maintained properly, can be infinitesimal. An advantage of an AC to DC drive or rectifier is the cost.



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.



ARNAB SARKAR - Senior Manager - Danieli automation | LinkedIn
Experience – 14 +year's professional experience of Industrial Automation specializing in Cold Rolling Mill, HSM, CGL, SPM, Pickling line, Caster,Hot Rolling Mill etc. Exposure in different Drive systems and hands on experience in various process line in Steel Industries.



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 ...



Cycloconverter Drives for Rolling Mills | Semantic Scholar
The drive variant described does not require special motors or motors fitted with internal flux sensing devices. It was originally developed for rolling mill applications but can also be used advantageously in hoists and comparable high-capacity drives running at slow speed.



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…



Automazioni Industriali Capitanio Conquers Complexity and ...
Automazioni Industriali Capitanio s.r.l. (AIC) is a global system integrator, which designs, manufactures and markets automation systems, primarily for the metals industry. For almost forty years it has successfully designed, produced and commissioned industrial automation systems for the management of process automation in the iron and steel ...



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.



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" Buhler #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 ...



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.



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.

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