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Vertical vibration model for the roll system of a six-high rolling mill ...
4 天之前 A finite-element model validation confirmed that the accuracy of the novel Timoshenko beam six-high rolling mill vibration model introduced in this paper is
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Vertical nonlinear vibration analysis of cold rolling mill
2023年12月22日 The vibration problem is the key factor that restricts the stabilization and working performance of the precision cold rolling mill. As the sheet thickness becomes
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Unstable vibration of roller mills - ScienceDirect
2006年10月24日 Unstable vibration of roller mills. K.Fujitaa, T.Saitob. Show more. Add to Mendeley. https://doi/10.1016/j.jsv.2006.04.001Get rights and content. Abstract. The
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Vibration Analysis of a Vertical Roller Mill: Modeling and Validation ...
2014年7月25日 Abstract. In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical
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Dynamical responses for a vertical vibration model of a four-roller ...
2023年7月1日 According to the structure of the four-roller cold rolling mill and the actual situation of the rolling process, the rolling mill can be simplified to the vertical vibration
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Torsional Vibration for Rolling Mill with the Drive System
2021年6月30日 A rolling mill driving system is a multiple degree of a freedom torsional vibration system [ 1 ]. The torsional vibration of a driving system causes the rolling speed
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An active method suppressing rolling mill vibration:
2019年7月22日 The rolling mill vibration not only seriously causes the strip thickness heterogeneity, but also damages the rolling mill equipment and its electrical components.
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Application of dynamic vibration absorber for vertical vibration ...
2023年4月17日 The vibration phenomenon of rolling mill and the quality defects of products have attracted extensive attention. The inducement and suppression methods of
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Vertical Rolling Mill's Twist Vibration - IEEE Xplore
2008年12月14日 This paper studies the twist vibration of the branch closed system in the main transmission system of the vertical rolling mill, by means of the method of the
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Impact Analysis of Roller System Stability for Four
2016年6月26日 Usually, rolling mill vibration research does not distinguish whether rolling mill roll system is stable, and mechanics model is set up setting the mill under stabilization. A single vibration as the coupling
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An active method suppressing rolling mill vibration:
2019年7月22日 The rolling mill vibration not only seriously causes the strip thickness heterogeneity, but also damages the rolling mill equipment and its electrical components. Existing vibration suppression methods are passive and mainly tune mechanical, hydraulic, electrical and rolling process parameters. A new active vibration suppression method
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Rolling process and its influence analysis on hot continuous
2016年11月9日 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. The results
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Dynamic Model of the Hot Strip Rolling Mill Vibration
2019年7月30日 by roller bearings and rolls. Zheng et al. [] analyzed the spatialvibrationoffour-highrollingmillsusingthemodied ... of the hot rolling mill vibration resulting from the entry thicknessdeviation. econclusionisgiveninSection . 2. Dynamic Model..MillStructureDynamicModel.
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Dynamical responses for a vertical vibration model of a four-roller ...
2023年7月1日 1. Introduction. The vertical vibration phenomenon associated with the cold rolling process has always attracted the attention of researchers at home and abroad, and it is also a major technical problem that plagues the production of iron and steel enterprises [1], [2], [3], [4].Four-roller cold rolling mills are widely used in aerospace [5], iron and
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Vibration Analysis of a Vertical Roller Mill: Modeling and
2014年10月23日 In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is derived and simulated for a set of working parameters. Mechanical properties of the grinding material and the physical properties of the mechanical construction are used in the
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Vibration monitoring and analysis of strip rolling mill based
2022年9月16日 A vibration monitoring method of strip rolling mill based on the digital twin model was proposed which could effectively reduce the structure complexity and test cost of the traditional monitoring system. Firstly, the coupling vibration mechanism model of the dynamic characteristics of roll system and bearings of four-high mill was established.
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Vibration Characteristics of Rolling Mill System under
2021年1月19日 Considering the two kinds of nonlinear constraints of rolling mill hydraulic cylinder, spring force and friction force, the vibration model of rolling mill system is established. The amplitude frequency response equations are obtained by using the average method. Comparing the time history curves of vertical vibration displacement of rolling
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Review on Main Drive Torsional Vibration and Roller Coupling Vibration ...
2020年4月21日 Review on Main Drive Torsional Vibration and Roller Coupling Vibration of Rolling Mill Author(s): Xiao Bin Fan*, Bin Zhao, Yu Jiang and Bing Xu Fan. Volume 15, Issue 3, 2021 . Published on: 21 April, 2020. Page: [301 - 313] Pages: 13 . DOI: 10.2174/1872212114999200421150533. Price: $65. Purchase PDF. Abstract.
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Impact Analysis of Roller System Stability for Four-High
ResearchArticle Impact Analysis of Roller System Stability for Four-High Mill Horizontal Vibration Xiao-binFan,1 YongZang,2 Yuan-kuiSun,1 andPing-anWang1 ...
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Vibration Instability in Rolling Mills: Modeling and
2002年3月26日 AbstractModels 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. In particular, a stability criterion for
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Vertical–Horizontal Coupling Vibration of Hot
2021年1月18日 This study establishes a vertical–horizontal coupling vibration model of hot rolling mill rolls under multi-piecewise nonlinear constraints considering the piecewise nonlinear spring force and
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Reasons of Vertical Roller Mill Vibration - ZENITH Crusher
2019年6月21日 The grinding roller wear will make the roller has unbalance force and it can make vibration. The millstone wear will make the materials layer uninform and it also can make vibration. Operation problems. Grinding pressure is too high or the material layer is too thin will cause the vertical roller mill vibration problem. When you are operating ...
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Analysis on parametrically excited nonlinear vertical vibration
A vertical nonlinear parametrically excited vibration model of 4-h rolling system was established,in consideration of the nonlinear damping and nonlinear stiffness between working rolls.The analytic approximate solution of parametric resonances to corresponding main frequency,ultra harmonics and inferior harmonics were studied by using multiple
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Vertical nonlinear vibration analysis of cold rolling mill
2023年12月22日 Assuming that the vertical vibration occurs perpendicular to the sheet and the vibration of the upper and lower rolls is symmetrical about the center plane of the sheet [20, 22], the vertical nonlinear vibration model can be established as shown in Fig. 2.The equivalent mass m is concentrated on the theoretical rotation center of the upper work roll.
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Analysis and Optimization of Grinding Performance of Vertical Roller ...
2022年1月23日 This work concentrates on the energy consumption and grinding energy efficiency of a laboratory vertical roller mill (VRM) under various operating parameters. For design of experiments (DOE), the response surface method (RSM) was employed with the VRM experiments to systematically investigate the influence of operating parameters on
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Impact Analysis of Roller System Stability for Four-High
2019年7月30日 analyzed. Actually, roller vibration will damage roll system stability and cause bearing horizontal or vertical vibration. erefore, the CSP four-high mill vibration characteristics were studied from the mill roll system stability and lateral dynamic behavior of the roll system in this paper. 2. Roller System Structure Stability Calculation
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Vibration Mill - Qingdao EPIC Powder Machinery
2024年4月16日 A vibration mill is a size reduction equipment that applies the process of continuous impaction in carrying out its size reduction function. The grinding container is made up of a tube that is held in a frame that is supported by means of springs which is filled to approximately 80% total volume with porcelain or stainless steel balls. Unlike ...
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Vertical Vibration Characteristics of Strip Rolling Mill
Through MATLAB simulation, the vertical vibration characteris- tics of the strip mill work roll are compared and analyzed under the condition that the outer raceway failure of the roller bearing remains unchanged, the inner raceway failure changes and the inner and outer raceway failures change simultaneously.
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Dynamical responses for a vertical vibration model of a four-roller ...
2023年7月1日 Fig. 3 shows the steady-state amplitude responses of the vertical vibration model of a four-roller cold milling mill when the noise intensity η t = 0. It can be observed . Conclusions. In this paper, the stochastic response of a Gaussian white noise-induced vertical vibration model of a four-roller cold rolling mill with harmonic excitation is ...
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Dynamic Modeling and Vibration Analysis of a Vertical Roller Mill
2011年9月23日 This paper studies mathematical model of a Vertical Roller Mill (VRM). VRMs are widely used in cement, chemical, coal and electricity industries to reduce particle sizes of raw materials to a ...
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