### Power and automation system for Shandong Aluminum

Adaptive models for roll force, torque, forward slip, roll and strip temperature, thermal crown, mill stand module, roll bending and wear, are used to predict the expected process behavior in all phases of rolling and secure optimal setup values. More than 200 setpoints and control parameters are preset by the model for each coil.

Get price### for roughing and intermediate rolling mills to deal with the first problem mentioned above. The proposed scheme detects the changes in the motor current and corrects the motor speed of the upstream stand based on approximate human reasoning to remove speed mismatch.

Get price### Understanding Journal Bearings EDGE

understanding journal bearings and is integral to bearing design and appliion. Since they have significant damping fluid film journal bearings have a strong impact on the vibration characteristics of machinery. The types of machinery we are concerned with

Get price### Bearing friction, power loss and starting torque

The starting torque of a rolling bearing is defined as the frictional moment that must be overcome by the bearing to start rotating, at an ambient temperature of 20 to 30 °C (70 to 85 °F). Therefore, only the sliding frictional moment and the frictional moment of seals, if applied, are taken into consideration. M start = M sl + M seal where

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central excise rebate from re rolling mill tice.co.in. alazzuny for crushers and central miand ers cop acmsa.co.za. alazzuny for crushers and central miand ers cop. Central excise rebate from re rolling mill. central excise rebate from re rolling mill,Basalt Crusher. central drive ball mill torque and power calculation central . Get price

Get price### Motor Formulas and Calculations, Index of Helpful Tools

MOTOR FORMULAS AND CALCULATIONS: The formulas and calculations which appear below should be used for estimating purposes only. It is the responsibility of the customer to specify the required motor Hp, Torque and accelerating time for his appliion.

Get price### POWER IN ROLLING idconline.com

POWER IN ROLLING Power is applied to the rolling mill by applying Torque to the rolls and by using roll strip tension.The total rolling load is distributed over the arc of contact. However, the total rolling load can be assumed to be concentrated at point along the arc of contact ata distance ''a'' from the line of centers of the rolls.

Get price### Understanding Journal Bearings EDGE

understanding journal bearings and is integral to bearing design and appliion. Since they have significant damping fluid film journal bearings have a strong impact on the vibration characteristics of machinery. The types of machinery we are concerned with

Get price### Bearing friction, power loss and starting torque

The starting torque of a rolling bearing is defined as the frictional moment that must be overcome by the bearing to start rotating, at an ambient temperature of 20 to 30 °C (70 to 85 °F). Therefore, only the sliding frictional moment and the frictional moment of seals, if applied, are taken into consideration. M start = M sl + M seal where

Get price### for roughing and intermediate rolling mills to deal with the first problem mentioned above. The proposed scheme detects the changes in the motor current and corrects the motor speed of the upstream stand based on approximate human reasoning to remove speed mismatch.

Get price### Motor torque, load torque and selection of motors

Motor torque, load torque and selection of motors 2/43 2.1 Motor speed–torque curve Refer to Figure 2.1 where T st = starting torque or breakaway torque. T m = minimum, pullin or pullup torque. T po = pullout, breakdown or maximum torque, obtainable over the entire speed range.

Get price### Motor torque, load torque and selection of motors

Motor torque, load torque and selection of motors 2/43 2.1 Motor speed–torque curve Refer to Figure 2.1 where T st = starting torque or breakaway torque. T m = minimum, pullin or pullup torque. T po = pullout, breakdown or maximum torque, obtainable over the entire speed range.

Get price### PROCESS OF ROLLING MILLS LinkedIn

Calculation of roll force is important because calculation of torque and power in a rolling mill is based on calculation of roll force. Accurate prediction of roll force for grooved rolling is

Get price### PROCESS OF ROLLING MILLS LinkedIn

Calculation of roll force is important because calculation of torque and power in a rolling mill is based on calculation of roll force. Accurate prediction of roll force for grooved rolling is

Get price### Tech Automation To Improve Productivity and Quality

How to use automation to improve productivity and quality in your rolling mill. Automation directly impacts long product rolling mill productivity and product quality. This paper will discuss Russula''s latest technical developments in optimizing rolling mill control. This advanced optimization consists of an automatic calculation of the

Get price### Method of load calculation of electrical drives of rolling

An improved calculation method for rolling pressure and load torque of electrical drive engine is suggested further. This method considers peculiar strain of product in high deformation zones and

Get price### Plate Rolling Machine Operation Procedure and Method

Plate Rolling Machine Operation Procedure and Method. Home check whether the rolling machine is in good condition after startup check whether the hydraulic system pressure is normal, the overturned side can be normally closed, when starting the machine the bottom roller of the plate rolls is under normal rotation, to ensure the system

Get price### (PDF) Control Scheme Using Forward Slip for a Multistand

Control Scheme Using Forward Slip for a Multistand Hot Strip Rolling Mill. Article the calculation accuracy are enhanced, and make the actual thickness more approximate to the target value.

Get price### hot tmt rolling mill rolling formula westerhaak.nl

rerollingmill rpm formula. rerolling mill roll speed formula overlandconnection hot tmt rolling mill rolling formula. excell sheet calculation torque speed power for rolling mill excell sheet, XPact® for hot rolling mills pools our, link budgets, noise figure, Friis formula Torque and speed rolling, Rolling and ReRolling, Re Rolling Mill, Cold Rolling,TMT .

Get price### (PDF) Control Scheme Using Forward Slip for a Multistand

Control Scheme Using Forward Slip for a Multistand Hot Strip Rolling Mill. Article the calculation accuracy are enhanced, and make the actual thickness more approximate to the target value.

Get price### rolling mill startup torque calculation

rolling mill startup torque calculation. Roll force, torque, lever arm coefficient, and strain . Due to the growing importance of width control in strip and plate mills, edge rolling is currently an important process in hot rolling mills. Research in edge rolling has been carried out, and in the present article, models for roll force, torque

Get price### Method of load calculation of electrical drives of rolling

An improved calculation method for rolling pressure and load torque of electrical drive engine is suggested further. This method considers peculiar strain of product in high deformation zones and

Get price### torque stable operation under vector control With precise speed identifiion and rotor magnetic flux orientation, the torque can respond quickly and realize stable operation in the case of 0.25Hz load mutation. Startup torque: Open loop vector control 0.35Hz 180% rated torque

Get price### Calculations Simple Electric Motors

It depends on the accuracy of your assembly, sensor position, friction, alignment of the motor and generator axles etc. If you want to get meaningful numbers you might use a second generator kit as explained in Torque and Efficiency Calculation section. Speed, torque, power and efficiency of the motors are not constant values.

Get price### for roughing and intermediate rolling mills to deal with the first problem mentioned above. The proposed scheme detects the changes in the motor current and corrects the motor speed of the upstream stand based on approximate human reasoning to remove speed mismatch.

Get price### Torsional Vibration Analysis of Hydrogenerators

To reveal the rules of electromechanical coupling vibration of hydrogenerating set,torsional vibration characteristic of hydrogenerator rotor system under electromagnetic excitation were investigated.Considering the influence of distribution of salient pole on airgap

Get price### Profile and Flatness Set Up System for Rolling Mill

Finishing mill setup calculation Calculation of reduction rate, rolling load, rolling speed, strip temperature, and motor torque/power of each pass, etc. Finishing mill setup (Startup) Work roll/backup roll materials, roll diameter, initial crown, etc. Finishing mill

Get price### Experimental and Theoretical Study on Minimum Achievable

Asymmetric rolling is a severe plastic deformation technique that can refine grain size in sheet/foil materials. This technique has been used to improve the mechanical properties of products, . In the asymmetric rolling process, sheets are passed between rolls that either have different diameters, or rotate at different angular speeds.

Get price### Rolling mill startup torque calculation

Rolling mill startup torque calculation. The ratio λ aLp a√R∆t is used to calculate the moment arm ''a'' λ 05 for hot rolling and 045 for cold rolling The torque is equal to the product of total rolling load and the effective moment arm Since there are two work rolls Torque Mt 2Pa Consider two high roll mill as shown in

Get price### Power and automation system for Shandong Aluminum

Adaptive models for roll force, torque, forward slip, roll and strip temperature, thermal crown, mill stand module, roll bending and wear, are used to predict the expected process behavior in all phases of rolling and secure optimal setup values. More than 200 setpoints and control parameters are preset by the model for each coil.

Get price### Torsional Vibration Analysis of Hydrogenerators

To reveal the rules of electromechanical coupling vibration of hydrogenerating set,torsional vibration characteristic of hydrogenerator rotor system under electromagnetic excitation were investigated.Considering the influence of distribution of salient pole on airgap

Get price### (PDF) Control Scheme Using Forward Slip for a Multistand

Control Scheme Using Forward Slip for a Multistand Hot Strip Rolling Mill. Article the calculation accuracy are enhanced, and make the actual thickness more approximate to the target value.

Get price### Tech Automation To Improve Productivity and Quality

How to use automation to improve productivity and quality in your rolling mill. Automation directly impacts long product rolling mill productivity and product quality. This paper will discuss Russula''s latest technical developments in optimizing rolling mill control. This advanced optimization consists of an automatic calculation of the

Get price### Strip crown and flatness control for hot strip

Learning calculation for crown and flatness model Finishing mill setup values Roll gap, roll speed, rolling load, torque, etc. + Setup values for CNP? roll shift positions and work roll bending forces Roll wear calculation Finishing mill setup (Note) q to r : Startup timing

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