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Vibration-Based Condition Monitoring of Rolling Mill - IJSER

Vibration Based Condition Monitoring of Rolling Mill V inod D.TIrpude, Jayant P.Modak, Girish D. Mehta Abstract: All over the India, most of the processing industries are involved with rolling operations for steel and alloyed materials. To perform these operations, rolling mills are used. ...

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Torsional Vibration Analysis of Drive System for 6-High ...

The torsional vibration model of main drive system for 6-high cold rolling mill was established. Calculation formula of torque amplification factor (TAF) of main drive system was put forward when the clearance exists or not. The TAF-curve, changing by the biting time of blank, was drawn, and whether torsional vibration could cause mechanical failure in weak link of main drive system was judged.

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Fault Detection of Roller Bearing Using Vibration Analysis

Fault Detection of Roller Bearing Using Vibration Analysis . Rabinarayan Sethi. 1.Subhasini Muduli. 2 . Abstract—The rolling elementbearings are commonly used in rotating machinery, it mostly covers a broad range of rotating machinery and plays a significant role in industrial applications which is considered as a most critical element.

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Research Article Multiple-Modal-Coupling Modeling and ...

rolling mill coupling vibration. Yun et al. [ ] proposed a model which allows rolls to vibrate along two orthogonal directions to study the vertical-horizontal coupling vibra-tion and suggested that mode coupling might also induce vibration. Since the vibration of a high-speed rolling mill always appears as the coupling of multiple vibration types,

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Vibration Instability in Rolling Mills: Modeling and ...

Mar 26, 2002· An analysis of rolling mill chatter was performed for the purpose of identifying characteristics of the vibrations and to determine any dependency on the rolling schedule. In particular, a stability criterion for the critical rolling speed is used to predict the maximum rolling speed without chatter instability on schedules from a 5 stand ...

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Vibration analysis of Sendzimir cold rolling mill and ...

The presence of several rolls in cluster cold rolling mills makes on-line vibration monitoring and failure analysis difficult. The dynamic behaviour of rolls strongly depends on the rolling ...

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Vibration analysis on vertical roller mill

Vibration analysis on vertical roller mill Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Vibration analysis on vertical roller mill, quarry, aggregate, and different kinds of minerals.

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Detecting critical vibrations in rolling mills - iba

Jun 13, 2019· In a cold rolling mill, the process data recording system ibaPDA has been used for process data analysis, but the vibration measurement data was evaluated separately. With ibaInSpectra as add-on to the ibaPDA system, the acquired vibration signals can be analyzed within defined frequency ranges.

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Rolling Mill Equipment Fault Analysis

Mar 31, 2021· Rolling mill equipment rolling shaft vibration fault and its causes: the rolling bearing fault is caused by the running frequency and scale value difference is too far, either too high or too low. Under such operating frequency, it is easy for the bearing to conflict with the surrounding environment in the rolling process.

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Abstract: The 4 DOF mechanical hydraulic coupling model based on the analysis of the coupling effect of rolling mill hydraulic and mechanical systems is established. The rolling force increment model is derived by considering the influence of exit and entry tension, reduction, and friction coefficient on rolling force in vibration process.

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Hopf Bifurcation Control for Rolling Mill Multiple-Mode ...

Aug 17, 2017· Vibration Instability in Rolling Mills: Modeling and Experimental Results J. Vib. Acoust (April,2002) Complexification-Averaging Analysis on a Giant Magnetostrictive Harvester Integrated With a Nonlinear Energy Sink

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Torsional Vibration for Rolling Mill with the Drive System ...

Jun 30, 2021· A rolling mill driving system is a multiple degree of a freedom torsional vibration system [].The torsional vibration of a driving system causes the rolling speed to change dynamically, providing instability factors at rolling interface and impacting the strip quality [2, 3].Therefore, it is necessary to explore the torsional vibration caused by the structural problems of the main drive system.

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Experimental and Numerical Investigation of the Vibration ...

3.1. Vibration Measurement of the Rolling Mill The cold rolling process is usually conducted with a workpiece that is initially at room temperature. A schematic illustration of the 6-high cold rolling mill is shown in Fig. 1.11) The stands are arranged to produce a sequential reduc-tion in the thickness of the strip. Work rolls are the tools

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Rolling Mill & Grinder Chatter | IVC Technologies

We Provide Rolling Mill and Grinder Chatter Solutions. Today's global economy means aggressive competition and no manufacturer can afford quality issues such as Rolling Mill and Roll Grinder Chatter, Flutter, or Barring which result in increased conversion costs, lost production, and loss of customer confidence.Due to the complexity of the rolling and grinding processes, typical vibration ...

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Mill Vibration Cause And - fevesocem.org

Rolling mill vibration has become a bottleneck for manufacturing thin steel strips and a worldwide problem,1,2 as it can cause unacceptable thickness variations and severely damage the mill equipment.3,4 Therefore, damping mill vibration is very important for the rolling industry.

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RESEARCH ON THE VIBRATION OF COLD ROLLING MILL F5 …

Serious vibration occurred on the F5 stand when producing thin strips on a 1550 cold tandem mill. The field test showed that the dominant frequency of the vibration is 144 Hz, which was close to the natural frequency of the F5 stand. Moreover, there were many excitation frequencies in the strip excitation spectrum and the servovalve pressure spectrum of the screwdown system.

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Some Key Pre-processingTechnologies in Rolling Mill ...

rolling mill had impact[1]. On one hand, changing speed of rolling mill often occurred in the beginning or ending process of rolling mill, and even the normal running process. And the changing speed processes often reflected the true situation of machine condition. On the other hand, impact vibration signals mean temporal information of signals ...

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Vibration analysis and numerical simulation of rolling ...

Jan 01, 2021· Cold rolling plays a crucial role in flat steel production. In recent years, it has become extremely difficult to ignore the existence of chatter, also called "ghost vibration" by operators who work in milling plants [], which restricts the quality and efficiency of strip production.Fig. 1 shows the layout of a tandem cold rolling process. Mill vibration often occurs in stand 4 and 5 ...

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Characteristic of torsional vibration of mill main drive ...

Dec 31, 2015· JIN B Q, LIANG Y W, XIONG S B, et al. Vibration analysis of rolling mill servo screwdown system[J]. Journal of Vibration, Measurement & Diagnosis, 2008, 28(2): 91–95. (in Chinese) Google Scholar [6] WANG Q Y, JIANG Z Y, ZHAO J W, et al. Multi-factor coupling system characteristic of the dynamic roll gap in the high-speed rolling mill during ...

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Rolling Mill Research Papers - Academia.edu

Vibration Control, Gears, Rolling Mill, Torsional Vibration Analysis of Geared Systems Regenerative chatter vibrations control in the tandem cold rolling mills Chatter vibrations were investigated for the high speed 5 stand 4-h tandem cold rolling mill 2030 of the NLMC.

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UNIVIB Ltd - Mill chatter studies to discover the cause of

UNIVIB engineers have nearly 20 years experience in the troubleshooting of all types of strip chatter and mill vibration problem. We specialise in the "hands-on" (or should that be "hands-dirty") measurement and analysis of the way a mill actually behaves under normal operating conditions, rather than trying to predict its characteristics from ...

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Research on the Vibration of Rolling Mill | Scientific.Net

Abstract: The vibration influence on the quality of strip for 2180mm six-high cold tandem rolling mill is discussed. The abnormal frequency of mill is analysis by spot examination. The methods of numerical computation and finite element method simulation by the ANSYS are adopted to …

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Amplitude-frequency characteristics analysis for vertical ...

Mar 14, 2019· M. Mosayebi, F. Zarrinkolah, and K. Farmanesh, " Calculation of stiffness parameters and vibration analysis of a cold rolling mill stand," International Journal of Advanced Manufacturing Technology 91(9-12), 1– 11 (2017). 31.

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[PDF] Chatter detection using principal component analysis ...

Most conventional approach for online chatter detection is by using vibration measurement of mill stands in time & frequency domain. Present work proposes two approaches to detect chatter in cold rolling mill using a statistical technique called Principal Component Analysis (PCA). In this paper two methods are used for chatter detection.

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Analysis on Vibration of Rolling rolls Grinder

The vibration source of the rolling rolls grinder mainly comes from the following aspects: (1) The grinding wheel drive motor is unbalanced and generates vibration, which is the main factor. (2) The grinding wheel is not in dynamic and static balance and vibrates when rotating. (3) The length or tightness of the driving V-belt is inconsistent ...

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Vibration analysis of a Sendzimir cold rolling mill and ...

Abstract The presence of several rolls in cluster cold rolling mills makes on-line vibration monitoring and failure analysis difficult. The dynamic behaviour of rolls strongly depends on the rolling pressure in the roll bite. Strip vibration applies a dynamic component on the rolling force acting on the work roll and may excite the resonance of the mill stand.

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Vibration Analysis | IVC Technologies

We are the only company in the United States hosting Vibration Analysis Level 1 and 2 courses which are taught by an ASNT PdM Level III certificate holder endorsed in both Vibration Analysis and Thermal/Infrared. We are the only company in the United States with an on-site training center that includes dynamic equipment in our mill test lab area.

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In order to better identify the type of mill vibration and suppress the mill vibration,it is necessary to conduct a comprehensive analysis on the natural modal characteristics of the rolling mill system. Considering the vibration of horizontal,torsional and vertical system,and considering the coupling effect of strip and rolling mill system,an ...

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Chatter problems on a cold rolling mill - Innoval ...

This type of speed-dependant vibration will be a mechanical forced vibration within the rolling mill, for example due to a defective gear or bearing. Hence, the team collected data for all potential sources of forced vibration. Careful analysis of the vibration data …

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Stability analysis of the rolling mill multiple-modal ...

Considering the unstable oscillation in the rolling process caused by the lubrication conditions change, a dynamic rolling process model considering the nonlinear friction is built using the Bland-Ford-Hill rolling force model. In addition, based on the structure model which can characterize the coupling vibration of rolling mill, and taking the dynamic variations of rolling force and rolling ...

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(PDF) Wavelet Analysis of Vibration Signature of a Bevel ...

International OPEN ACCESS Journal Of Modern Engineering Research (IJMER) Wavelet Analysis of Vibration Signature of a Bevel Gear Box in a Stand of Steel Rolling Mill of a Steel Plant Md. Faridha Khanam1, P. Ravi Kumar2, Dr. D. Srinivasarao3 1 M.Tech. Student, 2 Assistant Professor, Department of Mechanical Engineering, PVP Siddhartha Institute of Technology, Vijayawada, Andhra Pradesh, India …

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Vibration analysis of a Sendzimir cold rolling mill and ...

Dec 09, 2009· Vibration analysis of a Sendzimir cold rolling mill and bearing fault detection E Brusa, L Lemma, and D Benasciutti Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 2009 224 : 8, 1645-1654

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Chatter detection using principal component analysis in ...

Benhafsi Y. The use of vibration analysis tools to solve chatter problems on rolling mills and roll grinding machines. Proc. of Steel Rolling 2006, the 9th International and …

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A Review on Chatter Analysis in Cold Rolling process

A Review on Chatter Analysis in Cold Rolling process Asit Kumar Choudhary*, Vinay S Gujre and Rahul Kumar Verma ... rolling mill was derived analytically using the factors causing negative and positive damping [8]. ... vibration. Usually, vibration decreases with the increase of the friction coefficient. The higher friction coefficient leads to ...

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Prediction and analysis of cold rolling mill vibration ...

Mill chatter is one of the most common problems in cold rolling. Thus, it is important to investigate the mill chatter phenomenon to ensure a high-speed and stable rolling process. The traditional mill chatter mechanism model cannot meet the monitoring and rapid diagnosis needs of the rolling process in the field. In this paper, a data-driven mill vibration analysis method is proposed.

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Peter Rice - Rolling Process Technologist - CM1 & Roll ...

• Conducted vibration analysis on rolling mills and finishing lines at our North American facilities for 2.5 yrs • Active… Was part of the Molten Metal & Recycling group performing process development and field work at the casting facilities • Responsible for maintenance and operation of the rolling mills at NGTC for

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