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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
Mar 24, 2015 A Sinamics SM150 converter drives the two 3.3 kV rolling motors, each of which has a power of 3,300 kW and a speed ranging from 240 to 600 rpm. Sinamics S120 converters drive the 690 V coiler motors, each of which has a power of 950 kW and a speed ranging from 330 to 1,200 rpm, as well as the driver motors and trimming shear.
Algorithms are presented for the digital control of double-loop DC machine drives used for applications where severe constraints on motor speed and position render conventional constant-torque or power control inadequate, such as in steel rolling mill drives. It is shown that the heavy current demand associated with maximal acceleration control can be reduced by using a form of proportional ...
Jun 11, 2019 The crop and cobble shear is used in hot rolling mills is to crop front end, tail end, as well as to segment cutting in case of eventualities. These shears are usually of startstop type and are driven either with flywheel mounted pneumatic clutchbrake or with direct DC direct current
rolling areas Hot metal detector HMD, which is the most commonly used sensor in the mill line. Loop scanner, which is used in automatic loop control, and generates the signal of material tracking simultaneously. Stand threading signal, which is generated from the peak torque detector in the ACDC drive unit. It is mainly used in
Site Challenges in Hot Rolling Mill. The temperature of hot rolling is around 1000 C to 1300 C. The hot rolling mill having a challenging environment for making any kind of temperature measurements like high temperature and the movement of the metal, make thermocouples and other contact temperature sensors impractical.
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 to1n in magnitude where n 6k 1 ...
Jun 19, 2017 Rolling mill guide equipments play a major role in ensuring the surface quality of the rolled product. The guides are to be designed for the wide variety of stock sizes and shapes which are normally encountered in the long product rolling. In modern long product rolling mills roller guides are normally used both for entry and exit guides.
May 01, 2014 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 ...
Parts of electrical drives, choice of electrical drives, status of dc and ac drives, Dynamics of electrical drives, Fundamental torque equation, speed torque conventions and multiquadrant operation. Equivalent values of drive parameters, components of low torques, nature and classification of load torques, calculation of time and energy loss in ...
Parker has a long history of DC drives manufacture, with years of experience in installing drives into standalone speed control and sectional drive systems. Our DC Drive products combine optimal control performance and easy maintenance with user-friendly interfaces, standard open fieldbuses, system integration and worldwide product support. From simple single, phase speed controllers, through ...
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 10mm. deformed bar is 8ms. Equipment characteristic. 1. Rolling mill stand adopts pre-stressed type.
Feb 27, 2021 Rolling mill requires high power motor generally dc motor and slip ring induction motor of multi-kilowatt above 100 H.P motor is preferred. According to the survey of ROLLING MILLS IN RAIPUR. The normal sizes of electric motors range from 400 H.P. to 1000 H.P. the
May 25, 2021 Optional retrofitting capability of cycloconverter drive control enables plate mill to be operated with DC motor in the event of an emergency SIJ Acroni d.o.o. has engaged Primetals Technologies to replace the existing cycloconverter drive control for the upper and lower motors on the plate mills roughing stand at the Jesenice production site ...
Nov 02, 2020 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 ...
May 18, 2016 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 POSCOs Pohang Works in Korea. Using ABBs large synchronous motors, AMZ, together with ACS6000 medium voltage AC drives, will help improve process efficiency, accuracy and reliability.
Sep 30, 2013 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.
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 R0V0 stand motors of Hot Strip Mill of Rourkela Steel Plant are synchronous motor. These motors are driven by cyclo converter.
Rolls are tools used in rolling mills to reduce the cross section of metal stock. The weight of rolls may vary from a few kilograms up to 250 tonnes. Under rolling conditions the contact area between roll and stock suffers wear, the other parts of a roll - body and necks - have to be considered as normal parts of designed components under high ...
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
machine 13460 manufacturer mario di maio italy type mill 2 high rolling mill model lsp 80x50 roll size 3.149 80mm diameter x 2 50mm wide mill North Branford, CT View Listing 8 204mm x 8 204mm FENN, 20 HP DC, 500 VOLTS 13364
7. Slip Ring Induction Motor. It has high starting torque and large overload capacity. The speed of slip ring induction motor can be changed up to 50 of its normal speed. Slip ring induction motor is used for those industrial drives which require high starting torque and speed control such as lifts, pumps, winding machines, printing presses, line shafts, elevators and compressors etc.
The new hot rolling mill includes a roughing stand with edgers, a Steckel rolling stand, a cooling section and a down coiler. For the roughing stand and the Steckel stand, Siemens is supplying twin main-drive motors, each with an output of 5.2 megawatts, as well as the motors for the edgers, the Steckel coilers and the down coiler plus all the ...
Used 18 DC Mill Drive Ask Price Rolling mill complete automatic rolling mill in four independent drives with roughing size of 18 and finishing mill of 18, manufacturing h r strip coil from 100mm to 360mm wide in coil form, with 1. 2mm to 5mm in thickness and from 250 ft to 600ft in length, with a production capacity of 230 mt per day.
Jun 14, 2021 This drive is specifically tailored to manage the toughest requirements in terms of power and torque, such as those needed in rolling mills. The ACS6080 is built on the proven technology of its predecessor, the ACS6000 that has been successfully used for more than 23 years in demanding rolling mill applications.
Jul 01, 1997 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 ...
Rolling Mill Motors Used in the steel and aluminum industries, rolling mill motors generally operate at low speeds and are designed for constant torque with a speed range of up to four to one. Some applications include continuous cold mills, continuous hot strip mills, and reversing hot mills.
DC DRIVE KIRLOSKAR ELECTRIC Cer.lfled ISO 9001 DIGITAL DC DRIVE 25A-3200A . ... PAPER MILL Line shaft or Sectional drives, Rewinders, Slitters, Cutters etc. STEEL Hot Rolling, Cold Rolling, Casters, process line, Finishing line, Stretch Mill. Forming Mill, lube Mill, Draw Bench, Pinch Rolls, Coilers, Kiln Main
Direct current DC motor drive system coupled to a hot rough rolling mill. 2.1. Formulae Governing the Hot Rolling Process The deformation due to the rolling of a hot slab of steel which is known by the term draft D leading to the reduction of thickness of the
Amongst the wide range of products for sale choice, Rolling Mill Dc Motor is one of the hot items. Design engineers or buyers might want to check out various Rolling Mill Dc Motor factory amp manufacturers, who offer lots of related choices such as dc motor, electric motor and motor.
Jan 20, 2021 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
We are wholesale trader, importer and exporter of Rolling Mills, DC Drives, Parker DC Drives, Hot Metal Detector, etc. We are also Service Provider of Installation amp Consultancy Service. There exists a well-trained team of engineers who handle the most complex drive requirements completely. All drafting needs are addressed through computers.
Used 2 High Rolling Mills for sale from Fenn, Lewis, and Canadian General Electric. Find suppliers near you at the worlds leading directory for surplus machinery and equipment.
Wonder Systems India Pvt. Ltd. was established in the year 1996.We are wholesale trader, importer and exporter of DC Drives, Parker DC Drives, Hot Metal Detector, etc. We are also Service Provider of Installation amp Consultancy Service.
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