Hot Rolling Mill Roll Eccentricity

Hot Rolling Flat — Metals Magazine

Kobe Steel Orders New Steel Plate Finishing Rolling Mill for Kakogawa Works. In June, Primetals Technologies received an order from Kobe Steel, Ltd. for a steel plate finishing rolling mill for its Kakogawa Works located in Kakogawa City, Hyogo Prefecture, Japan. 16.09.2021. Hot Rolling Flat.

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Neural network for identification of roll eccentricity in rolling mills ...

The roll eccentricity in a rolling mill may define the limit of achievable thickness tolerances and thus is subject of interest for the automation equipment in hot rolling mills as well as in cold rolling mills. Today's demand on thickness tolerances less than 0.8% require efficient methods for roll eccentricity identification and compensation.

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KR20020004802A - Roll eccentricity controll method of …

CONSTITUTION: The period and amplitude of the wave of roll eccentricity are calculated by measuring rolling load, detecting the rotational angles of work rolls 2, 3, converting the rotational angles of the work rolls into the rotational angles of the back-up rolls 4, 5 and performing FFT operation based on the rolling load and the rotational angles of the back-up rolls and also by …

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roll eccentricity as regulating variable for rolling_roll ...

roll eccentricity as regulating variable for rolling:[ ] …,roll eccentricity as regulating variable for rolling、、 …

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Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity ...

DOI: 10.4236/ENG.2014.61005 Corpus ID: 30768077; Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network @article{Hameed2014StripTC, title={Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network}, author={Waleed Ishaq Hameed …

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Multi-resolution Wavelet Method for Roll Eccentricity

The roll eccentricity in a rolling mill may define the limit of achievable thickness tolerances and thus is subject of interest for the automation equipment in …

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Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity ...

DOI: 10.4236/ENG.2014.61005 Corpus ID: 30768077; Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network @article{Hameed2014StripTC, title={Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network}, author={Waleed Ishaq …

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Strip Thickness Control of Cold Rolling Mill with Roll …

DOI: 10.4236/ENG.2014.61005 Corpus ID: 30768077; Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity Compensation by Using Fuzzy Neural Network @article{Hameed2014StripTC, title={Strip …

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Strip Thickness Control of Cold Rolling Mill with Roll …

trolling the roll gap position is such that produces the desired output thickness [6]. Roll eccentricities are caused by axial deviations between the roll barrel and the roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand.

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Roll-Eccentricity Compensation — Metals Magazine

Rolls in rolling mills are never perfectly round but have a certain eccentricity, which has a range of different causes, such as: Inaccuracies in grinding. Non-uniform thermal expansion. Asymmetrical adjustment of bearing rolls shell via drive-spindle head.

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Tension and roll gap time history: (a) back and front tension of …

Download scientific diagram | Tension and roll gap time history: (a) back and front tension of No. 5 stand under the speed of 23.0 m/s; (b) back and front tension of …

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Hot Rolling Mill - YouTube

(Roll forming: )This film takes you through the processes within a hot rolling mill. You'll get to see the different stages all th...

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Neural network for identification of roll eccentricity in …

The roll eccentricity in a rolling mill may define the limit of achievable thickness tolerances and thus is subject of interest for the automation equipment in hot rolling mills as well as in cold rolling mills. Today's demand on thickness tolerances less than 0.8% require efficient methods for roll eccentricity identification and compensation.

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Method of measuring and compensating roll eccentricity of a rolling mill

A method of correcting the thickness variations of a rolling plate by controlling at least one of the top or bottom backup rolls of a rolling mill. The method further comprises an off-line eccentricity identification method, and an on-line eccentricity compensation method.

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Active compensation of roll eccentricity in rolling mills

Abstract: This paper is concerned with the active compensation of the roll eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons, like e.g. inexact roll grinding or nonuniform thermal expansion of the rolls.

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Hot rolling mills for aluminum - SMS group

Casting and rolling of aluminium strips in one continuous production process. The new Nexcast minimill produces strips of all kinds of aluminum and aluminum alloys, with sufficient surface quality for most applications, good to very good thickness-, profile- and flatness tolerances and very stable final rolling temperature over the strip body length.

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Strip Thickness Control of Cold Rolling Mill with Roll Eccentricity ...

In rolling mill, the accuracy and quality of the strip exit thickness are very important factors. To realize high accuracy in the strip exit thickness, the Automatic Gauge Control (AGC) system is used. Because of roll eccentricity in backup rolls, the exit thickness deviates periodically. In this paper, we design PI controller in outer loop for the strip exit …

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Roll Eccentricity Control for Strip Rolling Mills

SIMULATION RESULTS In eccentricity control, the following practical considerations apply to production rolling mills and thus should be cons idered in the des ign of relevant simulation studies: • the incoming feed can introduce periodic disturbances in the form of hot rolled thickness disturbances or uncoiler induced tension fluctuations, • apparently small …

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Strip Thickness Control of Cold Rolling Mill with Roll …

consistent with data reported from operating mills which . Figure 3. Effects of roll eccentricity on output strip thick- ness. usually includes its effects. The eccentricity components remaining in the mill exit thickness after compensation. In the model, roll eccentricity modifies Equation (5) as [12]: out. F hS e M =++ (7) where. e is the ...

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hot rolling mill roll eccentricity - uniekebruidstaarten.nl

Roll Eccentricity Control Using Identified Eccentricity of Top/Bottom Rolls by Roll Force. Authors: Imanari ... roll eccentricity, back up roll, hot strip mill, repetitive control, thickness control ... Roll eccentricity is a periodic disturbance caused by a structure of back up rolls in rolling mills, and it affects product thickness accuracy.

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Active compensation of roll eccentricity in rolling mills - IEEE ...

IEEE Xplore, delivering full text access to the world's highest quality technical literature in engineering and technology. | IEEE Xplore

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Roll Eccentricity Control Using Identified Eccentricity of …

Roll eccentricity is a periodic disturbance caused by a structure of back up rolls in rolling mills, and it affects product thickness accuracy. It cannot be measured directly by sensors, so it should be identified by measured thickness or measured roll force. When there is a large difference of diameters between top and bottom back up roll, the performance of roll eccentricity control …

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Active compensation of roll eccentricity in rolling mills

This paper is concerned with the active compensation of the roll-eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be...

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Active compensation of roll eccentricity in rolling mills

Abstract: This paper is concerned with the active compensation of the roll-eccentricity-induced periodic disturbances in the strip exit thickness of hot and cold rolling mills. The roll eccentricity may be caused by different reasons, e.g., inexact roll grinding or nonuniform thermal expansion of the rolls.

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Hot rolling mill | SKF

These costs can be significant – in fact, water-cleaning costs are typically higher than the cost of the lubricants themselves. SKF's range of solutions for hot rolling mills can help you meet the demands of increased productivity and quality in cost-effective ways. Our specialized bearings can handle the high loads and harsh environments ...

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Work roll bending forces in 4-roll mills - ResearchGate

These studies had concentrated to improve the mill stretch design and the rolling speed control in order to accomplish fine thickness with respect to the compensation of the roll eccentricity and ...

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hot rolling mill roll eccentricity - uniekebruidstaarten.nl

When the rolling rolls with eccentricity rotate and swing, by which the thickness at the exit of roll gap changes such as the roll gap is controlled. If mill modulus is small, the change of roll gap seems really small, which is caused by swinging of the roll during rotating. Therefore, it …

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Online Monitoring System Design for Roll Eccentricity …

The key equipme nt in hot/cold tand em rolling mills is the finishing mill g roup, which usually consists o f 7 mill stands in hot rolling and 5 mill stands in cold rolling.

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hot rolling mill roll eccentricity - Ezio

hot rolling mill roll eccentricity. Abstract This paper is concerned with the active compensation of the roll eccentricityinduced periodic disturbances in the strip exit thickness of hot and cold rolling mills The roll eccentricity may be caused by different reasons like eg inexact roll grinding or nonuniform thermal expansion of the rolls

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KR100419657B1 - Apparatus for automatically controlling eccentricity …

The present invention relates to an automatic roll eccentric control apparatus of a hot rolling facility which measures roll eccentricity of a plurality of rolling mills provided in a rolling facility and compensates the position of the rolling mill with the greatest roll eccentricity, thereby minimizing the amount of deviation of the rolling.

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