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dc drives used in hot rolling mill

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.

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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.

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Secondhand Aluminium Foil Mill Plant with Continuous ...

Aluminium Foil Mill & Continuous Caster,6HI Cold Reversible Rolling Mill,Secondhand 2HI Rolling Mill,4HI Reversible Rolling Mill,4HI Rolling Mill,Hot Rolling Mill,Reconditioners of Rolling Mill,SECONDHAND Sheet Metal Machinery,Industrial Machinery,we buy sell used machines,used machine,used machinery,second hand machines,second hand …

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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.

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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.

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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

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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.

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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 …

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8.36 Rolling Mill Controls

programs for rolling mill plants Siemens Energy & Automation, drives and automation systems for hot and cold rolling mills, profile rolling mills, plantwide automation, computer modeling, mon-itoring and data logging, AGCs, flatness measuring SMS Demag rolling mill technology for the steel and nonferrous metals industries

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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.

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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

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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 …

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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.

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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

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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 ...

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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 ...

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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 …

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Design and control of digital DC drives in steel rolling mills

Permanent magnet direct-current (PMDC) motors are used in steel rolling mills, automobiles, conveyors, and various robotics applications due to their controllability, reliability, and low cost [1 ...

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Equipment > All Equipment

dc crane & mill motors dc drives (33) dc electric motors (895) dc field coils ... hot mill components (5) hot strip mills (1) inspect/test/ lab equip. (2) ... railroad equipment reels rod and wire mill equipment roller tables (28) rolling mill spindles (10) …

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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 ...

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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

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Used Hazelett Narrow Continuous Strip Casting Line: MC-433 ...

- Hot Mill Exit Temp = 250-275 degrees C Mill #1 Coiler - Weight Capacity: 1500 kg ( 3300 lbs) - Drive: 35 kW DC variable speed - Speed Range: 0 - 55 mpm (0-180 fpm) - Hydraulic Coil Push-off - Coil Car Rolling Mill #2 - Type: 2-Hi Hot or Cold - Typical Thickness Range: 6 mm to 3 mm (.236 - .118") - Roll Size: 435 mm diameter (17") x 425 mm ...

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DC Drives Used In Hot Rolling Mill - YouTube

DC Drives used in hot steel rolling mill application in Thailand

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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.

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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 ...

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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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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.

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Thyristor stack controllers suit easy retrofitting

Thyristor stack controller from Sprint Electric used in a hot rolling mill Sprint Electric presents an external thyristor stack controller called the PLXD. Thyristor stack controllers are ideal for controlling DC 6 pulse or 12 pulse, 2 Quadrant or 4 Quadrant thyristor power stacks.

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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.

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Used 2 High Rolling Mills for Sale | Surplus Record

Find new and used 2 High Rolling Mills for sale from suppliers near you. Fenn, Lewis, 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 ...

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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…

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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.

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Korea's largest steelmaker chooses ABB to revamp hot ...

Zurich, Switzerland, May 18, 2016 - 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 …

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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 ...

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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 …

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Marius Acsente Banica - Process Equipment Research ...

- September 2006 – Hot Rolling Mill Stomana Sofia, Bulgaria Software used: DriveMonitor v5.4. Drives used: Siemens Simoreg CM. Activities: - Tests for Simoreg DC Drives + DC Ansaldo Motors (600-800 kW) before installing. - August 2006 – Bergomi, Italy - Tests for ACS800-ABB DC Drive used for a crane.

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