The hot rolling process is mainly used for the production of sheet metal or simple sections such as rails. Other typical uses of hot rolled metal are truck frames, clutch plates, wheels and rims etc. In the hot rolling mill the process is designed to compress the steel billets or ingots and obtain the desired shape and thickness by using rollers. The rolling is controlled by adjusting the ...

Find new and used 2 High Rolling Mills for sale from suppliers near you. Fenn, , Canadian General Electric and more.

ABB wins $2.5M drives order to futureproof Kanthal rolling mill. Comprehensive drive system and project management package for Swedish mill will boost performance, uptime and efficiency. Reference. ABB upgrades drives control technology at AST Terni steel mill. The solution will extend the product lifecycle and boost reliability while reducing ...

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

AIC provides long-time experience and technical know-how for engineering, AC&DC Drives, PLC and SCADA for complete level 0, 1 and 2 automation and Process Control, that are the critical issues of Hot Rolling Mills. RACS* integrated platform is a leading-edge technology specially developed from AIC for all Mills applications and requirements.

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 ...

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 -Removed and in Sto...

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.

dc crane & mill motors dc drives (36) dc electric motors (900) 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) rolling mill stands roll lathes (2) rolls.

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

• Example: Motors used for continuous hot strip mills, cold tandem mills, cold reversing mills, bar steel and rod steel rolling, etc. (%) 300 250 200 150 100 50 0 0 50 100 150 200 250 300(%) Torque and output (% to rated torque and rated output) Rotation speed (% to base speed)

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.

DC Drive Motor Cooling System. Modification of Motor Cover and Chilled Air Supply for increased cooling. For more information about how CECO Metals will help your business grow with clean, safe and more efficient solutions that help protect our shared environment, email Bill Frank: [email protected] or call 724.940.2326.

The R0/V0 stand motors of Hot Strip Mill o ... (VFDs) are used. DC drives are also used in place of VFDs at milling and batch type centrifugal machines. ... "Design of digital controller for ...

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

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 Drawing Machines etc.

The rolling mill control system and all the drives have already been engineered and manufactured by AIC as the panels in the past. The scope of the supply included: Six new DC drive cabinets suited to drive mill stands; Software development and upgrade of PLC Software. Programming for energy consumptions on working shifts will be implemented in ...

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…

Used 15.5" United 4-Hi Cold Rolling Mill for Steel: RM-450. Manufacturer: United; 15" cold mill for steel / very nice mill !!! Manufacturer - United Engineering / new 1950's - Upgrades in 1995 = revamped, new thyristor drives, new hydraulic screwdowns, and new AGC Status - Installed, under p...

American Steel Products Leading the Industry in a Variety of Rolling Mill Lines ASP Provides Hot & Cold Rolling Mills for Businesses World-Wide 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. Review It Rate It ...

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 ...

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.

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 industries etc..,. The master motor speed can be set

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 roughing mill ...

used dc motor for rolling mill for sale Know More. China DC Motor, DC Motor Manufacturers, Suppliers, Price, DC MOTOR used in universal DC 6V 12V 24V No-load speed 3000, New Hengli Z4-225-31 90kw Z4 Seriels DC Electric Motor for Rolling Mill FOB Price US 1000 / set Min Order 1 set, Amongst the wide range of products for sale choice, DC Motor is one of the hot items Design engineers or ...

An H ∞ speed controller design method for hot rolling mill drives, #4 drive system in #2 hot rolling mill of POSCO, is proposed. A weighted mixed sensitivity minimization method is used for obtaining an H ∞ speed controller, and loop shaping is used for improving speed tracking performance. The designed speed controller guarantees the robust stability of closed loop system against ...

1997 SMS Hot Plate Rolling Mill. Manufacturer: Demag This line has the capacity of producing 2,000,000 Tons/Year. Hot Rolling Mill for Steel plates, was constructed in 1997 and has gone through several upgrade. The last major upgrade was done in 2013 at a cost of...

Erection, commissioning, maintenance contracts for 4 high Cold rolling mill & repairs of imported AC drives for Continuos Casting plant at Ordanace Factory, Katni, utilising L&T make DC drives / PLC 84 H models for rolling mill : Remi Metals (Welspun group), Bharuch.

Long product rolling mills are one of the most demanding applications for motor drives. The rolling process consists of passing a hot steel billet through a "rolling mill", also called a "rolling train". The modern rolling train consists of …

DC Drives used in hot steel rolling mill application in Thailand

ROLLING MILL. Sprint Electric's high power 4 quadrant DC Drives provide exceptional motor control up to 980kW in rolling mill applications. Rolling mills are used to reduce the gauge or change the shape of metal, mills can be hot or cold roll. Hot roll mills heat up the metal to a high temperature so that shaping and forming can be easily ...

These Hot Saws are used in hot rolling to cut desired length and as well as top trim Front & Rear End. These shears are capable are capable of cutting section size ranging from 80 to 600mm (Beam, Channel, Angle) and as well as Square, Rounds of 40 to 250mm. These Hot saws presently are two types: Pendulum swinging type and horizontal shift type.

1,855 used hot rolling mill for sale products are offered for sale by suppliers on Alibaba.com, of which mine mill accounts for 1%, grinding equipment accounts for 1%, and flour mill accounts for 1%. A wide variety of used hot rolling mill for sale options are available to …