The existing modeling and analysis of rolling mills have been conducted by considering a single-vibration direction, such as vertical vibration, horizontal vibration, or torsional vibration; this makes it impossible to accurately capture the characteristics of the rolling process and fully explain the complex phenomena that occur during vibration.

The results would provide a theoretical reference for control and analysis of rolling mill vibration in engineering practice. Keywords: strip vibration, main drive system, torsional vibration, continuous-discrete coupled vibration model, modified iteration method. 1. Introduction.

Fig. 13 shows the dynamic mill vibration response in an actual rolling mill. In Fig. 13, the rolling strip is of grade MRT 5, the strip width is 868 mm, the unformed roll radius is 213 mm, the rolling speed is 19.2–19.5 m/s, and the thicknesses at entry and …

In a cold rolling mill, the process data recording system ibaPDA has been used for process data analysis, but the vibration measurement data was evaluated separately. With ibaInSpectra as add-on to the ibaPDA system, the acquired vibration signals can be analyzed within defined frequency ranges.

Vibration analysis of a Sendzimir cold rolling mill and bearing fault detection E Brusa, L Lemma, and D Benasciutti Proceedings of the Institution of Mechanical Engineers, Part C: Journal of …

-Analysis on Vibration Characteristics and Roll Wear Evaluation of Plate Mill.docx, ： ： ： () ： () () ...

C OUPLING VIBRATION MODEL FOR HOT ROLLING MILLS AND ITS APPLICATION. JIMIN W U, X IAOQIANG Y AN ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1797 is calculated by: 8 = ¨ 1 0 ÍT 6 6 :J ; Ç á @ 5, (1) where 0 is the number of data; T :J ; is the discrete test data. The time-domain and frequency-domain graphs for different mill modulus control gains are

According to the "Hill rolling force formula", taking particular account of the influence from horizontal vibration of rolled piece in roll gap, a dynamic rolling force model is analyzed. Considering the interaction between vibration of strip and roll, the dynamic vibration model of rolling mill is established. On this basis, the time delayed feedback is introduced to control the vibration ...

Mill vibration often occurs in stand 4 and 5 because of the high rolling speed and deformation resistance [ 2 ]. It can be categorized into torsional, …

The vibration amplitude of the rolling mill in the stable rolling stage was analyzed by collecting the vibration data of the rolling mill under different rolling process conditions. Considering the mill vibration was a complex nonlinear problem, the machine learning algorithms were used to investigate the vibration phenomena in rolling mill.

Our group of technicians is comprised of the foremost analysts in the field of industrial and process dynamics. We utilize state of the art equipment and methods to detect and monitor the rolling process for quality control, which differentiates us from any other Vibration Analysis service provider out there.

The elastic deformation of rolling mill elements during the rolling process is important. By knowing the displacement of rolls, the optimum gap between the work rolls can be calculated. 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 …

12%Theory analysis of rolling mill vibration influence factor When roller has vertical vibration, contact arc length changes caused by the rolling force fluctuation [ 4 ]; rolling process diagram with vertical vibration is shown in Fig. 4, and the contact arc length change is …

Benhafsi Y. The use of vibration analysis tools to solve chatter problems on rolling mills and roll grinding machines. Proc. of Steel Rolling 2006, the 9th International and 4th European Conference, …

Analytical approaches proposed to compute the dynamic component of the rolling force are used as an input to excite the rolls vibration in the cluster mill simulator. Numerical results are used to...

JIN B Q, LIANG Y W, XIONG S B, et al. Vibration analysis of rolling mill servo screwdown system[J]. Journal of Vibration, Measurement & Diagnosis, 2008, 28(2): 91–95. (in Chinese) Google Scholar [6] WANG Q Y, JIANG Z Y, ZHAO J W, et al. Multi-factor coupling system characteristic of the dynamic roll gap in the high-speed rolling mill during ...

Vibration Measurement For Rotatory Machines 1 1 INTRODUCTION In summer of 2011 I started to work for Hi-Teckno Engineering and a consulting office. During that time my task was to do maintenance work for centrifugal fans at energy plants and paper mills all around Finland. Because the core business of the company was vibration measurements, I started to become familiar with the technology.

The Arcelor T illeur cold rolling mill. has a 5-stand tandem mill that is prone to 3 rd order chatter and a. 4-stand tandem that is subject to 5 th order chatter. The. COMP ASS vibration ...

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 …

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 …

Vibration Measurement For Rotatory Machines 1 1 INTRODUCTION In summer of 2011 I started to work for Hi-Teckno Engineering and a consulting office. During that time my task was to do maintenance …

Request PDF | Chatter Marks and Vibration Analysis in a S6-High Cold Rolling Mill | S6-high rolling mill is an advanced mode to work the steel: it allows the use of very small work rolls laterally ...

Zheng et al. (2017) established a spatial vibration model of a six-high cold strip rolling mill based on multi-body transfer matrix method, and demonstrated the vibration characteristics of …

A rolling mill driving system is a multiple degree of a freedom torsional vibration system [].The torsional vibration of a driving system causes the rolling speed to change dynamically, …

An effective dynamic model is the basis for studying rolling mill vibration. Through analyzing characteristics of different types of vibration, a coupling vibration structure model is established, in …

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 …

Cold rolling plays a crucial role in flat steel production. In recent years, it has become extremely difficult to ignore the existence of chatter, also called "ghost vibration" by operators who …

Mill vibration model for steel rolling. There are various ways to solve mill vibration problems and increase the threshold rolling speed of cold mills. Thankfully, we have a lot of experience in this area. One of the tools we use to do this is the Innoval Mill Vibration Model. This vital tool assists in the solution of rolling mill vibration ...

The stability of the rolling mill vibration system was analyzed by changing the external excitation frequency. They found that the rolling speed and the thickness of the strip have great influence on the stability of the system. Yun et al. developed a suitable model to study the vibration of mill system.

Rolling Mill Analysis. Submitted by admin on May 2, 2012 - 11:11am. SenTek Vibration and Thickness Gauge High-Speed Signal Analysis. SenTek provides a variety of tools, techniques, and services for analyzing various vibration and repetitive thickness variations, sometimes known as "mill chatter". Higher frequency vibration harmonics resulting ...