— The new torsional vibration suppression algorithm is developed for the rolling mill main drive system with the untrue measurement information that is obtained by sensors with the unknown measurement sensitivities. The rest of the paper is organized as follows. In Section 2, we give the mathematical modeling of the rolling mill main drive system.

DOI: 10.1007/S10033-017-0104-6 Corpus ID: 114883448; Roll System and Stock's Multi-parameter Coupling Dynamic Modeling Based on the Shape Control of Steel Strip @article{Zhang2017RollSA, title={Roll System and Stock's Multi-parameter Coupling Dynamic Modeling Based on the Shape Control of Steel Strip}, author={Yang Zhang and …

 — The International Journal of Robust and Nonlinear Control promotes development of analysis and design techniques for uncertain linear and nonlinear systems. ... and investigates its vibration suppression control strategy with time varying full state constraints for the rolling mill vertical torsional coupling vibration system. Firstly, the ...

 — 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 …

 — Vibration in hot tandem rolling mills has been a problem in the iron and steel industry mainly due to its unpredictability. In this work, vibration data of the second finishing mill (F2) stand of a hot tandem rolling mill are collected and analyzed, and a mathematical model based on the coupling of a non-uniform deformation process, mill structure and …

 — Semantic Scholar extracted view of "Failure analysis of rolling mill stand coupling" by Ž. Domazet et al.

 — In order to build high accuracy integral dynamic models of cold rolling mill system, by analyzing the vibration process of cold rolling, the dynamic model of 4-h mill, including the rolling process model, the mill roll stand structure model and the hydraulic servo system model is built. These three models are coupled and linearized, then the …

 — 3.1 Dynamic Model of Rolling Mill Structure. According to the structure of the vertical system of the rolling mill, the 8-DOF dynamic model of the vertical system was established, as shown in Fig. 8, where m 1 to m 8 are the equivalent masses of upper part of housing, upper backup roll, upper intermediate roll, upper work roll, lower work roll, …

 — By site assessment, the roll system vibration is reduced obviously, and it is inhibited rolling mill mechanical- electronic-liquid coupling vibration phenomenon, so it has obtained the remarkable ...

Metals 2021, 11, 170 4 of 24 Figure 2. Structure diagram of a four-high hot rolling mill. 2.1. Piecewise Nonlinear Spring Force Model The hydraulic elastic stiffness refers to the nonlinear ...

 — In case of journal failure from drive end torque, the fracture face is inclined to the roll axis and can show a complete shear fracture, which quite often forms a cone shaped break. This type of fracture occurs at the drive end initiating from the weakest section, which is often the split ring recess, propagating to the centre of the neck, or ...

 — A work roll contour has been grounded on the 6–7 stand of a 4-high hot tandem rolling process, shown in Fig. 8. The effect of work roll contour of hot rolling on the cold rolled product is shown in Table 5. It can be seen that the implementation of work roll contour on hot rolling mill makes a larger impact on the reversing mill.

 — Bifurcation and chaos of electromechanical coupling main drive system with strongly nonlinear characteristic in mill. 2017, Chaos, Solitons and Fractals ... Vertical Vibration Characteristics of Strip Rolling Mill under Compound Roll Bearing Failure. 2022, ISIJ International ... Journal of Vocational Behavior, Volume 119, 2020, Article 103436 ...

 — 2.1 Dynamic Model. The rolling mill drive system mainly consists of the motor, reducer, main shaft, speed divider, arc gear shaft, work roll and bearings at corresponding parts [].The torsional vibration is often closely related to the dynamic energy transformation process of the rolling interface, which causes the relative speed between …

 — The rolling process is determined by the interaction of a number of different movements, during which the relative movement occurs between the vibrating roll system and the rolled piece, and the roll system's vibration interacts with the strip's deformation and rigid movement. So many parameters being involved leads to a complex mechanism of …

 — Slipper couplings and drive shafts are used to transmit torque between gearbox and 3-high-roughing mill stands. The failure of both couplings occurred on the …

In the study of electromechanical coupling vibration of mill main drive system, the influence of electrical system on the mechanical transmission is considered generally, however the research for the mechanism of electromechanical interaction is lacked. In order to research the electromechanical coupling resonance of main drive system on the F3 mill in a plant, …

 — Increasing the external excitation overall enhances the intensity of vertical vibration, allowing the rolling mill roll system to quickly initiate vibration within a small …

 — The nonlinear dynamic model of electromechanical coupling main drive system of rolling mill with nonlinear stiffness and frictional torque is established. The equilibrium point of the system is analyzed, the conditions of the Hopf bifurcation of the system are given, and the type of the bifurcation is studied. The Hopf bifurcation …

DOI: 10.3901/JME.2001.08.055 Corpus ID: 108953041; QUALITIVE ANALYSIS OF SELF-EXCITED HORIZON VIBRATION IN SINGLE-ROLL DRIVING MILL SYSTEM @article{Tang2001QUALITIVEAO, title={QUALITIVE ANALYSIS OF SELF-EXCITED HORIZON VIBRATION IN SINGLE-ROLL DRIVING MILL SYSTEM}, author={Hua Tao …

This is either a mill or roll fault. Journal Failure from Drive End Torque: The torque on the drive end has exceeded the torsional strength of the journal material. The strength of the journal will also be affected by the notch effect of sharp radii, i.e. in the split ring recess, or any other stress raisers such as radial bore-holes.

Main drive mechanical system of F5 cold rolling mill in steel plant consists of main motor, gear box, cross universal joint shaft, and roll as shown in Figure 1. Main motor driven gear box by the ...

 — This paper presents the results of developing a vibration model for the rolling mill vertical system with respect to the roll gap under the unsteady lubrication conditions to address the frequently self-excited vibration phenomenon of rolling mill vertical systems. On the basis of rolling theory, hydromechanics theory, lubrication and friction theory, as well …

 — This article establishes a mechanical-electrical-hydraulic vertical torsional coupling vibration mathematical model, and investigates its vibration suppression control …

 — Based on the theories of rolling, hydromechanics and vibration, a multi-parameter coupling kinetic model was established, in which the interface friction, geometric constraint and stress distribution were modelled for dynamic roll gap. A quantitative analysis was performed on the key parameters affecting the amplitude and critical speed of …

 — DOI: 10.1016/S1006-706X(10)60193-8 Corpus ID: 108441876; Coupling dynamic model of chatter for cold rolling @article{Yang2010CouplingDM, title={Coupling dynamic model of chatter for cold rolling}, author={Xu Yang and Chao-nan Tong and Guang-feng Yue and Jian Meng}, journal={Journal of Iron and Steel Research …

the more complex the vibration mode was, and the lower the stability of the drive system was. Kords Rolling mill Drive system Arc tooth gear Coupling model Dynamic characteristics 1 Introduction The drive system of a hot rolling mill is the power source to roll strip, which is mainly composed of a gearbox, a

 — In order to suppress the vibration during the rolling process of the rolling mill and improve the stability of the rolling process, this paper designs a spring-damping …

 — DOI: 10.1115/1.4037138 Corpus ID: 126226611; Hopf Bifurcation Control for Rolling Mill Multiple-Mode-Coupling Vibration Under Nonlinear Friction @article{Zeng2017HopfBC, title={Hopf Bifurcation Control for Rolling Mill Multiple-Mode-Coupling Vibration Under Nonlinear Friction}, author={Lingqiang Zeng and Yong Zang …

 — In this work, vibration data of the second finishing mill (F2) stand of a hot tandem rolling mill are collected and analyzed, and a mathematical model based on the coupling of a non-uniform …