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 fourhigh mill was established. Secondly, the digital twin model of strip rolling ...
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As Figures 6(a)6(c) show, the dynamic bifurcation characteristics of horizontal, vertical, and torsional vibrations are the same, which also reflects the coupling. When e 1 < mm, the system vibration is periodic motion and the corresponding phase path and Poincare section are single, which indicates that the system runs steadily. When e 1 > mm, the system enters chaotic motion and ...
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Guikuang had devoted into the filed of vertical roller mill RD and manufacturing for more than 48 years. In recent, our new technology GKLM vertical roller mill start to sale all over the world, it can be used in more than 300 kinds of minerals mesh grinding.
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Based on the analysis of the influence of roll vibration on the elastoplastic deformation state of a workpiece in a rolling process, a dynamic rolling force model with the hysteresis effect is established. Taking the rolling parameters of a 1780 mm hot rolling mill as an example, we analyzed the hysteresis between the dynamic rolling force and the roll vibration displacement by varying the ...
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Furthermore, the vibration suppression control algorithm of the mechanicalelectricalhydraulic vertical torsional coupling system is designed with the specific sequence backstepping method and dynamic surface control technique, which can resolve the problem of nesting in the controller design process.
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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 was thus proposed using the disturbance estimation and ...
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Title:Review on Main Drive Torsional Vibration and Roller Coupling Vibration of Rolling Mill Volume: 15 Issue: 3 Author(s): Xiao Bin Fan*, Bin Zhao, Yu Jiang and Bing Xu Fan Affiliation: School of Mechanical and Power Engineering, Henan Polytechnic University, Jiaozuo 454000,China
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1. Check that the tightness of all screws for the roller. jack (tensioning system) and drive units for the. motor and gearbox are as stated by the manufacturer; 2. Control the height of dam ring ...
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In this paper, a fractional differential term is introduced into the nonlinear vibration system of a mill roller system. The dynamic equations of the roll system were established. ... Xie, ; Ren, Z.; Liu, Y. An analysis on parametrically excited nonlinear vertical vibration of a roller system in corrugated rolling mills. J. Vib. Shock 2019 ...
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Provided is a vertical roller mill equipped with a function for inhibiting selfexcited vibration. A hydraulic circuit (20) connected to a hydraulic cylinder (13) for pushing a milling roller (4) on a milling table (3) is equipped with: open/close valves (24, 30) on a pressurized oil supply path (21) and/or a discharge oil path (29) of the hydraulic circuit (20); a bypass path (25, 32) for ...
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Vertical roller mill (VRM) is a type of heavyduty and energyintensive grinding equipment for many industries, such as cement, steel and chemical industries. ... Salamci, M. U., Gülbeyaz, S. (2014). Vibration Analysis of a Vertical Roller Mill: Modeling and Validation. In ASME 2014 12th Biennial Conference on Engineering Systems Design and ...
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Keywords: vertical roller mill, model predictive control, proportional integral and derivative control, artificial neural networks, fuzzy logic. 1. INTRODUCTION The VRM is a type of grinding mill integrated with multi functions such as grinding, drying and separation, used for grinding of coal, petroleum coke and minerals.
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1. Introduction. The vertical roller mill (VRM) is heavy mechanical equipment that used in the cement materials industry to process cement, slag, and coal cinder (Pani Mohanta, Citation 2015).The equipment always needs to work in the environment of heavy load, high temperature, high pressure, high corrosiveness, electromagnetic radiation interference, and multifield coupling, thus it is ...
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The application of vertical roller mills (VRMs) for ore grinding is a part of the strategies against rising energy consumption (Reichert et al., 2015). The VRM technology was introduced in the mid'90s for grinding clinker and slag by LOESCHE (Schaefer, 2001). Fig. 1 illustrates the grinding parts of a Loesche vertical roller mill.
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Vertical Roller Mills (VRM) have a clearly higher energy efficiency than ball mills, even if the ball mill is combined with a roller press. This and further arguments ... ́ Reduced vibration less wear ́ Reduced water injection less prehydration ́ Improved particle size distribution better concrete
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Multiple Vibrating Screen goovi® ... As vertical roller mills are 30 to 50 percent more efficient than other grinding solutions, they give cement plant owners a great opportunity to. maximise productivity and minimise operating costs. The high energy efficiency is especially beneficial in regions with limited power generating capacity or where ...
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Jan 2016. 4148. M Keyßner. T Fahrland. Keyßner, M. and Fahrland, T.: Drive selection for large Loesche vertical roller mills. Cement International, 2/2016, pp. 4148. Operational experience ...
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GlasTechnik Konstruktion, Müller Müller OHG Company Profile | SchönwaldeGlien, Brandenburg, Germany | Competitors, Financials Contacts Dun Bradstreet
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Request PDF | Vibration Analysis of a Vertical Roller Mill: Modeling and Validation | In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using...
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By introducing the Duffing system, the horizontal nonlinear vibration model of the roller system is established by considering the nonlinear characteristics of the rolling interface, as shown in Fig. 1, where (m) represents equivalent mass of the roll. ((k_{1} + k_{2} x^{2})) represents nonlinear stiffness coefficient term between roller system and frame, and k 1 is the linear stiffness ...
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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 vibration model in order to obtain more realistic results.
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Britta Meißner Company Profile | SchönwaldeGlien, Brandenburg, Germany | Competitors, Financials Contacts Dun Bradstreet
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The raw vertical roller mill has four rollers, 3000 KW main drive, m table diameter, m roller diameter with 330 t/h capacity (made by LOESCHE Company from Germany).
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Exception handling • vertical roller mill vibration is too large: (1) Feed uneven, when the mixture into the vertical roller mill over the powder, the vertical roller mill's loading rate, leading to the vertical roller mill on the thin material, and even disc direct contact with the roller, resulting in mechanical milling; when into the ...
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The CSP (compact strip production) middle mills (F3 rolling mill especially) had severe vibration during rolling thin container strip, so we discussed the rolling force parameters influence on rolling mill vibration and suppression measures from rolling technology in this article. 2 Rolling force parameters and technology analysis
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Vertical vibration model in unsteady lubrication process. In this study, a 1420 mm UCM mill, which was the 4th stand of a tandem cold rolling process, was used as a model, as depicted in Fig. 6(a). A massspringdamping model was utilized to investigate the displacement responses of the roll system during vertical vibration.
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FlyAsh Blaine: Increase fly Ash Blaine from 290 to 320. Flyash is a major supply for any cement plant now a days because every producer wants to produce. more PPC than OPC due to profitability ...
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In recent years, vertical roller mill has developed rapidly, mainly due to its good production stability, because the grinding roller does not directly contact with the grinding disc, and the material layer is formed in the middle, the machine vibration sound is low, and it is more suitable for large professional industrial fields, such as ...
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