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Controlling Your Web from Beginning to End - Paper, Film ...

Using the machine as a reference point in this example, the greatest rotational velocity is when the roll eccentricity is aligned with point Y at 270 deg. This is because the turning radius at payoff point has been reduced by the amount of the roll eccentricity, and the roll .

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Roll Eccentricity Extraction Method Based on Comprehensive ...

It is difficult to ensure measurement precision of roll eccentricity due to the complexity of interference of the rolling force, therefore the compensation accuracy is difficult to ensure. The roll eccentricity extraction method, based on comprehensive signal processing, was introduced in this paper combined with engineering practice.

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Roll Eccentricity Control by Using a Bandpass Filter ...

Thickness deviations of the steel plates in the rolling mill process is mainly caused by the roll eccentricity of the back up roll (BUR). In this paper, a bandpass filter with high gain in the given frequency is introduced which is able to overcome the roll eccentricity of BUR and is very simple compared with other roll eccentricity control (REC) methods.

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Eccentricity | Definition of Eccentricity by Merriam-Webster

Eccentricity definition is - the quality or state of being eccentric. How to use eccentricity in a sentence.

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Automatic Flatness Control (AFC) - Honeywell

Working directly with AGC/HGC and the MXProLine gauging system, AFC also offers complete mill optimization by controlling bending, steering, sprays, load or gap, tension and speed to deliver the highest quality sheet with the highest mill throughput. Roll eccentricity, mass flow and variable crown roll control are also available.

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Balance Quality Requirements of Rigid Rotors - IRD Balancing

Finally, a comparison of various balance quality grades is made with MIL-STD-167-1 and API balance limits. INTRODUCTION The International Standards Organization, ISO, published Standard 1940/1 "Balance Quality Requirements of Rigid Rotors," which has been adopted by the American National Standards Institute, ANSI, as S2.19-1975, "Balance Quality

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Roll Eccentricity Phase Identification System - CORE

Roll eccentricity is widespread in the strip mill, has cyclical impact on strip thickness, so disturbance compensation is required to improve the product quality. The key step of disturbance compensation is to obtain reliable roll eccentricity signal. Existing direct measurements of roll eccentricity signal method requires special equipments ...

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Roller Wave Distortion – Definition, Causes and a Novel ...

Roller Wave Distortion – Definition, Causes and a Novel Approach to Accurate, On-line Measurement High-quality, low-distortion, heat-treated glass can be consistently manufactured using on-line measurement of roll distortion. ... Any roll eccentricity imparts deformation to .

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

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 thickness while PD controller is ...

  • Published in: Engineering · 2014Authors: Waleed I Hameed · Khearia A MohamadAbout: Artificial neural networkGet Price
Diameter, Eccentricity, concentricity | Micro-Epsilon

Tire width inspection On-roll profile thickness measurement Tire geometry inspection Profile measurement of inner liner material ... Diameter, Eccentricity, concentricity. The diameter of an object can be established in different ways. ... An important criterion for the quality or the wear of tubes in industrial applications is the dimensional ...

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Roller Wave Distortion – Definition, Causes and a Novel ...

Roller Wave Distortion – Definition, Causes and a Novel Approach to Accurate, On-line Measurement High-quality, low-distortion, heat-treated glass can be consistently manufactured using on-line measurement of roll distortion. ... Any roll eccentricity imparts deformation to .

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An adaptive on-line sensor for roll eccentricity ...

An adaptive on-line sensor for roll eccentricity measurement and control J. F. Chicharo Department of Electrical and Computer Engineering, University of Wollongong, PO Box 1144, Wollongong NSW 2500, Australia This paper is concerned with the problem of roll eccentricity compensation in .

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Printing Rollers Manufacturers | High Quality Rubber Rollers

Perfect rubber rolls is a trusted name among manufacturers and consumers of Rubber Rollers. Our aims at Quality, Service and Reliability of its products and is committed to serve standards with best printing solutions. Perfect Rubber Rolls offers a wide range of

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Improvement of thickness tolerances in aluminium cold ...

"The ABB backup roll eccentricity and cyclic hardness variation has successfully corrected two major sources of strip thickness variation on the Alunorf 2-stand cold mill without any negative impact on mill productivity. The system has been virtually maintenance-free, .

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methods to control eccentricity in forged rolls

In the system, the roll eccentricity frequency produced by the eccentricity of the rolls is detected and utilized for softening the effective rigidity or stiffness of the mill, that is, weakening the apparent mill modulus by control means according to the frequency of roll eccentricity. ... quality management system on stone crushers. qms ...

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Paper Roll Eccentricity Inspection | Procemex

Paper Roll Eccentricity Inspection. Automatic optical measurement of ovality, eccentricity, and other dimensional features helps to assess product quality and ensure worker safety. Eccentricity measures how well the core is centered in the roll. If the core center is off from the roll center by more than a few millimeters, the roll may cause ...

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Cold Mill Systems | TMEIC

Eccentricity Compensation Control reduces the effect of backup roll irregularities. ECC uses pattern recognition techniques to change the gap position to compensate for roll eccentricities. Tension Control. Tension control optimizes the strip tension between the stands, pay off reels and tension reels to produce quality .

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Improvement Thickness Tolerances 3BDD017154EN final

an existing two-stand aluminum cold roll-ing mill. An essential quality characteristic in the cold rolling sector is the minimum thickness deviation that can be achieved at final gauge, i.e. from the finishing pass. ... Backup roll eccentricity is not only the result of grinding and roll assembly tolerances, but can also be thermally induced

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A novel real-time fuzzy-based diagnostic system of roll ...

Roll eccentricity is one of the most important and, consequently, any action directed to removing roll eccentricity or its effects will greatly improve thickness 1) whether defects come from roll eccentricity; quality and reduce production costs.

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Quality and Yield Optimization on Cold Rolling Mills ...

Quality and Yield Optimization on Cold Rolling Mills. By johnwallace | Published: November 7, 2008. ... On the other hand the quality is sufficient and can be held constant with little intervention, i.e. with the thickness measurement gauges and the installation of a simple feedback system. ... Back-up roll eccentricity;

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