rolling. 2.1 Calculation model for hot steel strip rolling. The hot strip mill shown in Fig. 1 was assumed as a Finishing mill motor power. : Nominal 2 400 000 t/y figure shows the rolling loads calculated by the equation for deformation
Get PriceFeb 24, 2012 Flatness, actuators, CVC, cluster mill, cold rolling, strip theoretical calculation of the roll shape that can give the desired change of the strips flatness KTH/MSE-- 12/08--SE+CER/EX 30 hp .. When hot rolling a strip, a crown is formed over the width, wavelength as seen in figure 6 and equation 1 [7].
Get PriceKeywords: Hot Strip Mill, Run Out Table, Adjustable Frequency Drive, Energy Efficiency of squirrel-cage induction machines rated at 4,160 volt, 400 horsepower (HP), with . Energy calculations were based on the following formulas:.
Get PriceClassifiion of basic bulk forming processes. Rolling. Forging. Extrusion. Wire drawing Hot working: Involves deformation above recrystallization temperature, . The above equation is applied to find the maximum force during the A 300 mm wide strip, 25 mm thick, is fed through a rolling mill with two powered rolls.
Get Priceeach stand in mill yard was measured at different roll tonnage. The pilot hot rolling test shows that variation of exit cross sectional area is almost linearly lated Archard''s wear equation as an incremental form and the . (Hp/2) is 18.75 mm.
Get PriceAug 1, 2018 d) Speed Rule describes the motor power of main drive and winder coefficient equation as a function of draft, roll/strip roughness, mill For instance, a hot strip mill with WRB and PC, the desirable conditions can be:.
Get Pricemill so that horse power of motor can be reduced without affecting the Hot rolling is a metalworking process that occurs above the recrystallization temperature As per the theoretical calculation and motor characteristics of 3 phase induction motor, .. Method of bearing diagnostics in the main drive train of rolling mill.
Get PriceBased on the roll contour, control model, and rolling process, a comprehensive shape control technology is proposed and applied to CSP hot strip mill of
Get PriceThe ratio λ = [ a/Lp] = [a/√R.∆t] is used to calculate the moment arm ''a'' λ =0.5 for hot rolling and 0.45 for cold rolling. The torque is equal to the product of total
Get PriceCalculate roll separation force (“rolling rolling mill. Width of Friction plays a critical role in enabling rolling → cannot roll without friction; for rolling to occur .. Hot rolling – . hp roll. kW roll. kW. Power. 35.1. /. 01.1. 075.02. 8.0. 107.6392,28.
Get Pricew*t*s*n*7.86*.000001= weight of strip D= diameter of winch T= required of the calculation the following formula can be used HP = tension * speed/4500
Get PriceThe Calculation of Roll Force and Torque in Hot Rolling Mills deformation in rolling derived by Orowan, together with von Kármán''s equation of equilibrium.
Get PriceAdaptive setup models for cold rolling mills model is used to calculate the pass - schedule and the mill . Hot rolling thickness or last anneal- . Motor power.
Get Priceduring hot rolling of rectangular sections (i.e. slab or bar) between plain rolls. The results did not . friction and for steel rolls it is defined by the equation : where T is the . the mill spring to the roll setting, correction being made for expansion and Summers that had two 310 h.p. motors; one was running all the time and
Get PriceAug 15, 2002 determines the reduction of strip being rolled, the rolling mill stretch calculation considers not only the plastic deformation of the bulk Formulae for force and torque in hot rolling include Sim''s formula [1954], Cook- diameter and 254 m m length, driven by a variable speed motor of 75 hp, was used.
Get Priceduring hot rolling of rectangular sections (i.e. slab or bar) between plain rolls. The results did not . friction and for steel rolls it is defined by the equation : where T is the . the mill spring to the roll setting, correction being made for expansion and Summers that had two 310 h.p. motors; one was running all the time and
Get PriceAug 11, 2014 A method for calculating the steady-state response of the The nonlinear torsional vibration characteristic of the hot strip mill''s main drive
Get PriceThe primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, Complex computer models calculate the targeted roughing mill.
Get PriceAs shown in the figure, the reduction in cross section is calculated by not much change in width, so that the thickness alone can be used to calculate reduction. each is driven by one or two electric motors totaling 7,000 to 12,000 horsepower. All the equipment in a hot-strip mill is arranged in a straight line of about 600
Get PriceStand Cooling at wide hot strip mill to provide a defined temperature drop in Linear 2-node element is used to calculate time evolution of temperature in .. The standard Hollomon-Jaffe parameter Hp (4) is used for calculation of equivalent.
Get PriceThe primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp, Complex computer models calculate the targeted roughing mill.
Get PriceAug 7, 2018 Impact can be calculated using theoretical calculations. However, these EVERY AREA OF YOUR HOT ROLLING MILL Blower assemblies: 5.5, 10, 20 , 25 and 30 Hp. (4.1, 7.5 equation of total impact force. This is
Get PriceDevelopment of simple equation for calculating average wear of hot strip mill work rolls Plastic deformation of the strip, thermal crown of rolls, roll deflection,
Get PriceA study was performed to develop new techniques for rolling mill setup and the rolling load, motor power and strip temperature, thermal camber of the work rolls, forming aluminium into thin strip, in particular hot and cold rolling and strip casting. The method of determining the constants T, V2and V3is discussed in
Get PriceIn 2006 the ILVA #1 Hot Strip Mill in Taranto, Italy undertook a project to upgrade Subsequent phases will upgrade the HP of the remaining stands and allow ILVA to replace all the DC . Equation 1: Definition of Torque Amplifiion Factor .
Get PriceRolling mills for hot and cold rolling of finished rolled products .. So, in dependence on rolling type and mode it is possible to calculate all three increments of.
Get PriceJan 8, 2014 Design a new mill for rolling given types and size ranges of products. Creating the rolling plan, calculating the power and roll loads, and . Forward Slip If a piece of hot steel is placed in a press and reduced in height, Starting with the motor power required, we calculate the torque from the roll RPM, the
Get Pricesystem was installed in the seven-stand hot-strip mill of voestalpine´s steel plant in . the heat equation, that couples by the temperature itself to all of the metallurgical .. [1] T. Fastner, H. P. Narzt, J. Vlcek, W. Marschal, H. Preissl, N. Hübner,
Get PriceIn metalworking, rolling is a metal forming process in which metal stock is passed through one In terms of usage, hot rolling processes more tonnage than any other Roll stands holding pairs of rolls are grouped together into rolling mills that can .. Other method of decreasing roll deflection include increasing the elastic
Get PriceJan 1, 2003 Jing, Limei (2001) Rolling mill roll design, Durham theses, Durham University. . 3.8 A Example for Calculating Rolling Separation Force Cherukuri, H.P. Johnson, R.E. and Smelser, R.E. A pate-Dependent Model for Hot.
Get PriceSCM has established a complete management system from initial consultation, solution design, on-site visit, machine preparation and shipment to after-sales feedback, to effectively ensure rapid and timely transmission of information so that the specialized services and technical supports can be provided by the correct persons at the correct time.