vibration analysis rolling mill

Rolling Mills/Engineering services - AIST

A rapid-response, world-wide, on-site test service for the troubleshooting of all types of rolling mill, roll grinding machine and leveller vibration problems, including the application of simple, bolt-on solutions such as tuned vibration absorbers to completely eliminate roll and strip chatter.

Vibration Analysis of Chatter in Cold Rolling Mill

In order to study the influence of tension and friction on rolling speed, two stands tandem systems based on two degrees of freedom vibration model are investigated. The following findings were obtained : (1) As the rolling speed increases, rolling mill vibrations become less stable.

Study on vibration characteristics of rolling mill based ...

The vertical vibration often occurs during the rolling production, which has an influence on the accuracy of rolling mill. In order to effectively suppress the vertical vibration of the rolling equipment, the rolling mill model with vibration absorber device was established. Based on the main resonance singularity of the rolling mill system, the best combination of opening parameters was ...

Vibration Analysis Reporting - Bearing Failure Stages ...

Vibration Analysis Reporting - Bearing Failure Stages & Responses. ... Example 1. A furnace combustion fan, which supplies billets to a rolling mill, is highly critical and a Stage 2 defect will require that planning begin to replace the bearing. ... Modern vibration analysis provides a means of identifying bearing faults, at various stages in ...

Rolling process and its influence analysis on hot ...

Rolling mill vibration is a worldwide problem, although it has been found that the mill structure defects are the main cause of vibration, but the inhibition measures are difficult to implement. So we discussed the rolling force parameters influence on rolling mill vibration and suppression measures from rolling technology in this article.

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 ... such as roll vibration, variation in strip tension and negative damping [1]. Chatters lead to thickness ... rolling mill was derived analytically using the factors causing negative and positive damping [8].

Machine-Condition Monitoring using Vibration

Machine-Condition Monitoring using Vibration Analysis ... Analyzing the recorded vibration signals on the office-based analysis system. Mill­ ... ^ ° faults on the outer-race of a rolling-element located in the 200 to 500 Hz range, fault than detecting discrete rrequen- bearing. For further information on bearing

Mill Vibration Phenomena during Cold Rolling

Mill Vibration Phenomena during Cold Rolling. All machines vibrate during operation. However, only a few of these vibrations cause problems to the product or the machine itself. Typically, the most damaging vibrations involve a natural resonance of the machine which significantly increases the …

811. Frequency analysis of chatter vibrations in tandem ...

octave chatter in a two-stand tandem rolling mill. Online vibration monitoring system that was used has provided different acceleration signals from various components of the rolling stand. Acceleration signals have been analyzed by a vibration analysis toolbox. Frequency analysis and

Rolling Mill Analysis | sentekcorp.com

A heavy-duty accelerometer in the gauge device will display the vibration frequencies and allow the user to determine which frequencies are due to actual thickness variations, roll eccentricity problems, and those that are due to vibration. These tools are available as part of our gauge systems or as stand-alone rolling mill tools and services.

1994 Asymmetrical rolling and self-excited vibration in a ...

6- 1993, "Non-linear Vibrations and Asymmetry in Coupled Tandem Hot Rolling Mills", ASME Conference on Mechanical Vibration and Noise, USA. 7-1993, "Asymmetrical Rolling and Self Excited Vibrations in a Hot Roughing Mill", ASME Conferenc e on Mechanical Vibration and Noise, USA.

PRUFTECHNIK : Vibration Analysis : Infrared : CBM Services

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.

Calculation of stiffness parameters and vibration analysis ...

In present research, a vibration model with two degrees of freedom is proposed for a cold sheet rolling mill and the stiffness parameters of different mill elements are calculated. A numerical simulation and a finite element analysis are also carried out for the related vibrations.

Vibration Instability in Rolling Mills: Modeling and ...

Mar 26, 2002· Models for the occurrence of the vibrational instability during rolling known as third octave chatter are presented and discussed. 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.

Rolling Mill & Grinder Chatter - Vibration Analysis

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 analysis techniques come up short since it is impossible ...

Intelligent Techniques for Condition Monitoring of Rolling ...

ABSTRACT: The condition monitoring and diagnosis of a steel rolling mill requires a variety of measurement techniques. Methods such as vibration measurement, acoustic emission, hydraulic oil analysis, pressure and temperature measurements are frequently applied. Since any single intelligent technique may fail in analysing the required data, an

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 ...

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

Research Article Multiple-Modal-Coupling Modeling and Stability Analysis of Cold Rolling Mill Vibration LingqiangZeng,YongZang,andZhiyingGao School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, China Correspondence should be addressed to Zhi ying Gao; [email protected]

Metals industry solutions | SKF

Vibration analysis and diagnostics . Thermography . Lubrication analysis . Condition monitoring - system installations . Mechanical maintenance services . ... Find out how SKF's range of integrated solutions for cold rolling mills can help protect you against unwanted downtime and production losses. FIND OUT MORE . Bar, wire and section mill .

vibration analysis rolling mill - Exact Motor Club

Spatial vibration of rolling mills . The analysis of rolling mill vibrations is usually limited to simple planar or low DOF vibrations. In reality, however, rolling mill vibrations take place in six DOF leading to spatial behaviors involving vertical, horizontal, axial, reverse, cross and swinging vibration modes resulting in complex relative ...

Vibration Condition Monitoring | SEA Stan Engineering

Solution: Rolling Mill Chatter Multi-Channel Trending, Sound, Torque & f(n) Natural Frequency Modal Examples Figure No.6 Figure No. 6 Sound & Acoustics with correlation to vibration signatures to determine root cause and solution.

Rolling Mill Vibration Model - Innoval Technology

Understand mill vibration issues, such as 3rd octave gauge chatter and 5th octave roll/strip marking, with our Rolling Mill Vibration Model. In common with other rotating machines, rolling mills are prone to many different vibrations during rolling and most do not cause a problem.

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.

Stability Analysis of a Nonlinear Coupled Vibration Model ...

Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips. In most mill vibration models, either the roll mass is usually limited to vibrate in vertical direction and vertical-horizontal directions, or the multiple rolls system is simplified to a single mass system.

Vibration Analysis Rolling Mill - nizzisara.it

Rolling process and its influence analysis on hot. Nov 09, 2016· Rolling mill vibration is a worldwide problem, although it has been found that the mill structure defects are the main cause of vibration, but the inhibition measures are difficult to implement.

Spatial vibration of rolling mills - ResearchGate

The analysis of rolling mill vibrations is usually limited to simple planar or low DOF vibrations. In reality, however, rolling mill vibrations take place in six DOF leading to spatial behaviors ...

Dynamic Model of the Hot Strip Rolling Mill Vibration ...

The vibration demolding of the crystallizer leads to slab thickness deviation in continuous casting processes. Therefore, in this paper, the dynamic model of the hot strip rolling mill vibration resulting from entry thickness deviation is proposed and its dynamic characteristics are studied. First, the dynamic model of vertical vibration in the hot strip rolling mill is established based on ...

Hot Rolling Mills | TMEIC

This is done by performing a mechanical torsional vibration analysis of the motor and load, a simulation of the drive speed response, and an electrical power system analysis. The automated rolling mill data is continuously monitored in the operators' control room.

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

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. This problem motivates predicting the cluster mill dynamics by …

Vibration characteristic analysis of twenty-high rolling ...

The local defect on the roll surface of twenty-high rolling mill is not only the main factor affecting the quality of steel strip but also generating abnormal vibration in rolling process. Local defects are usually very difficult to identify in the rolling process in real time, which is one of the existing difficult problems.

New York Vibration Analysis and CBM services

Vibration Analysis is a key component of a solid Condition Based Monitoring program and is often referred to as Predictive Maintenance. When applied to industrial or maintenance environments, Vibration Analysis aims to reduce costs and downtime by detecting equipment faults.