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9 K Doi K Ishikawa H Tsukuda K Yamamoto N Suganuma and V CONCLUSIONS AND FUTURE N Naito Analysis and Control Systems for Shaft Vibration in Steel Rolling Processes Kawasaki Steel Technical Report no 17 A method of the rolling mills transient torsional pp 73 80 Oct 1987 dynamics control by the electric motor acceleration has been 10 Y Hori H Iseki and K
Chat OnlineNonlinear vibrations and backlashes diagnostics in the rolling mills drive trains Proc of 6th EUROMECH Nonlinear Dynamics Conference ENOC 2008 Institute of Problems in Mechanical Engineering RAS June 30 July 4 2008 St Petersburg Russia 2008
Chat OnlineThis 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 showed the source to be a work roll
Chat Onlinevibration analysis rolling mill Wembley Primary School Torsional Vibration Analysis of Drive System for High The torsional vibration model of main drive system for high cold rolling mill was established Calculation formula of torque amplifiion 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
Chat Online05 04 2020 Currently employed at InfraBuild Steel as the Laverton Rolling Mills Condition Monitoring Supervisor and Senior Mechanical Trainer Certified Vibration Analyst and Thermographer with Cert IV in Mechanical Engineering.
Chat OnlineUnderstand 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
Chat Online19 12 2003 Vibration Analysis of Chatter in Cold Rolling Mill Theoretical Study on Self Excited Vibration by a Two DOF Tandem Model Kazushige ISHINO 1 The tandem cold mill chatter in sheet rolling has not always same phenomena even if under constant operating condition.
Chat Online811 Frequency analysis of chatter vibrations in tandem The frequency analysis of the rolling mills is presented in some articles to be used to predict the dynamic behavior of rolling stands 3 15 20 The influence of friction on chatter is studied and the conclusions are reported in the literature 6 2123 It is found that either too low or too high
Chat Online26 05 2015 Undesirable vibrations that occurred in cold rolling mills widely known as chatter are studied in this article by considering the interaction of three types of vibrations namely the longitudinal vibration of the rolled strip and the torsional and vertical vibrations of the upper work roll.
Chat OnlineIf the vibration is not eliminated and suppressed in time in the process of semi precision grinding and fine grinding the surface of the roller must be mapped with a square wave vibration pattern The vibration source of roll grinder mainly comes from the following aspects
Chat OnlineVibration In Vertical Roller Mills vibration vertical roller mill Page 1 of 2 re vibration vertical roller mill There are a number of reasons for high vibrations in vertical roller mills such as 1 Failure of the grout or cement material under the steel beams embedded in the foundation top which allows oil to penetrate further degrading the concrete know more
Chat OnlineExample 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 The next opportunity for replacement could be in 6 to 12 months Supervisors background in vibration analysis.
Chat Onlineon wear is another issue Stresses from Hertzian pressure in 4 high cold mill back up rolls were measured years ago the results were never published but of high interestalso maybe later K H Schröder July 2003 K H Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File SCHROEDER ROLLS 010703.DOC
Chat Online13 06 2019 Vibration Analysis Area of Application For reliable real time monitoring of vibrations offline analysis tools for optimization and validation are indispensable The iba system offers you coordinated tools for vibration monitoring and analysis combined with process data.
Chat OnlineResearch on Rolling Mill Vibration Based on the Rolling Piece Hysteretic Nonlinear Deformation Dongxiao Hou1 a Fei Liu2 Haoran Liu2 Rongrong Peng2 and Yue Zhu3 1 College of Control Engineering Northeast University at Qinhuangdao Qinhuangdao 066004 China 2 Institute of Information Technology and Engineering Yanshan University Qinhuangdao 066004
Chat Online04 10 2018 The analysis shows that the Condition of this motor1 MTR/001 is Marginal according to the vibration standards of class II machines According to ISO ISO 2372 Refer Table 2 Similarly all the machines and motors were analyzed using vibration analyzer
Chat Onlinestudy on vibration based maintenance in paper mills has been presented to improve accuracy and effectiveness.2 There are many case studies on vibration monitoring and analysis of rotating machineries Vibrations associated with rolling element bearings especially ball bearings have been discussed extensively 3 while applied statistical moments to
Chat OnlineAbstract The rolling mills are the complex mechatronics systems controlled by computer Improper design and some other reasons may result in continuous vertical vibration of the mill stand This vertical vibration that badly influences product quality is occurred due to self excited vibration of the hydraulic AGC auto gauge control system.
Chat OnlineReduction of vibration levels Roller mills are constructed of major mechanical components that can be easily damaged by high mill vibrations It is very important that a mill is operated in a stable manner and that corrective actions are taken to prevent damage to mechanical equipment and mill outages that result in lost production.
Chat OnlineSerious 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.
Chat OnlineCondition Based Monitoring through Vibration Analysis has been developed and is in use at RSP since April 93 as a key technique for implementation of Predictive Maintenance Program Tonnage Oxygen Plants Plate Mill Hot Strip Mill Cold Rolling Mill other secondary mills Captive Power Plants and a host of other departments.
Chat Onlinetwo work roll and two back up roll in addition to one degree of freedom system in order to appreciate the vibrations of rolling system was estimated numerically to deal with the chatter problem 6 A numerical solution to show the effect of friction condition in rolling bite on mill chatters five stand four high mills
Chat OnlineAbstract 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
Chat OnlineAll mills conduct some sort of vibration analysis as part of their preventative maintenance programs Most measure mechanical vibration to identify bad pump and roll bearings roll cover condition nip vibration roll balance etc Some mills have even taken a further step forward by analyzing
Chat OnlineVibration Analysis Of A Vertical Roller Mill Modeling And Oct 23 2014 opur EH Salamci MU amp G lbeyaz S Vibration Analysis of a Vertical Roller Mill Modeling and Validation Proceedings of the ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis Effect And Analysis Of Vertical Roller Mill Grinding
Chat Onlineon wear is another issue Stresses from Hertzian pressure in 4 high cold mill back up rolls were measured years ago the results were never published but of high interestalso maybe later K H Schröder July 2003 K H Schröder A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File SCHROEDER ROLLS 010703.DOC
Chat OnlineFig 3 Analyzing the recorded vibration signals on the office based analysis system Mill wright Regis Gaudreault discusses the results with Project Engineer Richard Lefebvre 4 An effective solution to a mill s maintenance problems is to operate a programme where the condition of the machines is measured and mainte
Chat Onlineroller mill fatigue based on torque measurements Juuso and Ruusunen 2013 and later extended to the real time risk analysis of machines and process devices Juuso and Galar 2016 The stress contributions were obtained using a data driven non linear scaling approach Juuso and Lahdelma 2010 The approach proposed in this study has the following
Chat OnlineAN EXPERIMENTAL ANALYSIS OF VIBRATION OF A BALL MILL WITH VARIABLE LOAD Salkan Rahmanovic Cement Plant Lukavac s.rahmanovic yahoo Bosnia and Herzegovina Safet Isic Mechanical Faculty Mostar safet.isic unmo.ba Bosnia and Herzegovina ABSTRACT This paper deals with the experimental investigation of vibrations of a ball mill under variable load.
Chat OnlineWhile most of the rolls were ground with vibration levels bel ow 0.03 mils peak peak p p some rolls exceeded 0.06 mils p p Rolls with high vibration levels caused excitation in the DUO Mill A roll s performance in the DUO Mill was found to be directly related to its grind session vibration level The vibration variati on
Chat Onlinevibration analysis rolling millWembley Primary School Torsional Vibration Analysis of Drive System for High The torsional vibration model of main drive system for 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
Chat OnlineVibration Analysis in Rolling Mills In a steel producing company rolling mills form metal in a specified thickness and shape New materials and increasing production speed results into new production parameters and plant behavior With this new elements
Chat OnlineHigh end vibration measurement units and advanced software functionality combined make routine condition monitoring and analysis tasks simple and efficient Post trigger is available for both SPM HD and vibration analysis this makes the monitoring of the drive train on rolling mills easy and reliable.
Chat OnlineHundreds of steel balls rolling with the slow turning mill act to effectively crush the lime Photo Of Ball Mill Motor 1 191 rpm From The Gear Analysis Handbook by Mr James Taylor we read the following The presence and absence of vibration at the ball mill
Chat Online31 12 2015 BRUSA E LEMMA L BENASCIUTTI D Vibration analysis of a Sendzimir cold rolling mill and bearing fault detection J Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science 2010 224 8 1645–1654.
Chat Online28 05 2012 In this paper the roll mill model with local defect on the working roller is established The dynamic rolling process is simulated using the Finite Element Analysis Effects of the local defect on the vibration characteristics of the roll mill and the surface quality of the strip steel are presented.
Chat OnlineAN EXPERIMENTAL ANALYSIS OF VIBRATION OF A BALL MILL WITH VARIABLE LOAD Salkan Rahmanovic Cement Plant Lukavac s.rahmanovic yahoo Bosnia and Herzegovina Safet Isic Mechanical Faculty Mostar safet.isic unmo.ba Bosnia and Herzegovina ABSTRACT This paper deals with the experimental investigation of vibrations of a ball mill under variable load.
Chat OnlineRoot Cause Analysis Determines Reason for Bearing Failures Background Problem The asset is a vertically mounted belt driven grinding mill as shown in Figure 1 The drive spindle has three 3 bearings two 2 cylindrical roller bearings and one 1 ball bearing The mill is being belt driven by a 100 hp two pole motor.
Chat Online09 07 2018 Vibration analysis is used primarily on rotating equipment such as steam and gas turbines pumps motors compressors paper machines rolling mills machine tools and gearboxes A major advantage is that vibration analysis can identify developing problems before they become too serious and cause unscheduled downtime.
Chat Onlinevibration analysis rolling mill Jun 13 2019 Cold rolling mills show a complex vibration behavior consisting of natural vibrations of the plant mechanics as well as excitations from the drive or bearings but also vibrations caused by defects The aim of the monitoring is to detect vibrations that are caused by external excitation or faults.
Chat OnlinePitting detection in worm gearboxes with vibration analysis F Elasha1 C Ruiz Cárcel 2 D Mba2 G Kiat2 I Nze3 G Yebra3 1 School of Mechanical Aerospace and Automative Coventry University Coventry UK 2Cranfield University Cranfield UK 3Transport for London UK ABSTRACT Diagnostics of worm gear defects with vibration analysis is challenging and this
Chat OnlineOur facilities also provide special repairs and upgrades for variable crown rolls reel spools water cooling systems head fit modifications roll balancing dummy heads fabrication and much more We routinely provide expert component analytics including vibration analysis optical and laser alignment and in mill nondestructive testing services.
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