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mill vibration during cold rolling

Mill Vibration Phenomena during Cold Rolling Innoval

2021-9-7  Mill Vibration Phenomena during Cold Rolling All machines vibrate during operation. However, only a few of these vibrations cause problems to the product or the machine itself. Typically, the most damaging vibrations

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Chapter Cold-Rolling Mill Vibration and Its Impact on

2021-8-10  This chapter describes the common types of mill vibration that can be experienced during the cold rolling of steel and aluminum. Two main problems are

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Vibration analysis of a Sendzimir cold rolling mill and

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science Abstract 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 bite.

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CHATTERBLOCK CHATTER VIBRATION IN COLD ROLLING*

2020-4-6  and 150Hz, is a self-excited vibration phenomena typically occurring in the rear stands of tandem cold mills. It can produce significant gauge variations and even cause strip breaks. 3rd octave mill chatter is characterized by a quickly diverging vertical vibration of the rolls for specific rolling conditions (material, mill speed, forces,

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Model for the solution of metal rolling mill vibration

2021-9-1  However, there are several types of rolling mill vibration that can have a significant impact on the quality and/or productivity of the cold rolling process. The two common forms of rolling mill vibration

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(PDF) VIBRATION MONITORING OF TANDEM MILLS AT

Chatter vibration can affect both the quality and production capacity of cold rolled steel if it is not properly monitored and reduced. 3rd order octave chatter is a self-generating

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Working-Stand Equipment Vibrations of Continuous Cold

2020-4-10  Abstract The article considers the nature, occurrence mechanism and development of resonant vibrations found in the working stand equipment of cold rolling mills during the production of strips with a thickness of 0.4–0.6 mm at speeds of more than 12 m/s. Vibration causes are possibly based on changes in the metal properties during rolling due to acquired hardening and forming of internal

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Experimental and Numerical Investigation of the

3.1. Vibration Measurement of the Rolling Mill The cold rolling process is usually conducted with a workpiece that is initially at room temperature. A schematic illustration of the 6-high cold rolling mill is shown in Fig. 1.11) The stands are arranged to produce a sequential reduc-tion in the thickness of the strip. Work rolls are the tools

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Vibration-Based Condition Monitoring of Rolling Mill

2016-9-9  In the present paper Rolling Mill -2 is considered. As this Rolling Mill is older therefore defects such as a) looseness of fasteners and belts, b) mis-alignment of parts, c) wear out of the components such as gear teeth, bushes, couplings and bearings are observed during

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A Review on Chatter Analysis in Cold Rolling process

2018-12-12  An undesirable mechanical vibrations defect occurs during common process of cold rolling operation known as chatter. This happened due to numerous discrepancies occurring during manufacturing process, such as roll vibration, variation in strip tension and negative damping [1]. Chatters lead to thickness

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Chapter Cold-Rolling Mill Vibration and Its Impact on

2021-8-10  This chapter describes the common types of mill vibration that can be experienced during the cold rolling of steel and aluminum. Two main problems are

get price

Vibration analysis of a Sendzimir cold rolling mill and

Abstract 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 bite. Strip vibration applies a dynamic component on the rolling force acting on the work roll and may excite the resonance of the mill stand.

get price

CHATTERBLOCK CHATTER VIBRATION IN COLD ROLLING*

2020-4-6  and 150Hz, is a self-excited vibration phenomena typically occurring in the rear stands of tandem cold mills. It can produce significant gauge variations and even cause strip breaks. 3rd octave mill chatter is characterized by a quickly diverging vertical vibration of the rolls for specific rolling conditions (material, mill speed, forces,

get price

Analysis of Vibration for Sendzimir Mill in Cold Rolling

2009-5-29  The vibration of cluster-type mills such as the 20-high Sendzimir mill is complicated due to their multi-roll structure. In order to clarify the vibration phenomenon in the Sendzimir mill, two simulation models were developed to calculate the natural frequencies of Sendzimir mill vibration, and the frequencies of mill vibration during the cold

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Research on Vibration of Tandem Cold Rolling Mill Based

In the light of chatter marks on the surface of high-class strip in 2180 tandem cold rolling mill, some comprehensive site tests were made. According to data analysis and inherent characteristics of vibration, the suspicious source of rolling mill vibration was found.

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Prediction and analysis of cold rolling mill vibration based

2020-9-10  Mill chatter is one of the most common problems in cold rolling. Thus, it is important to investigate the mill chatter phenomenon to ensure a high-speed and stable rolling process. The traditional mill chatter mechanism model cannot meet the monitoring

get price

Vibration-Based Condition Monitoring of Rolling Mill

2016-9-9  In the present paper Rolling Mill -2 is considered. As this Rolling Mill is older therefore defects such as a) looseness of fasteners and belts, b) mis-alignment of parts, c) wear out of the components such as gear teeth, bushes, couplings and bearings are observed during

get price

(PDF) Stability Analysis of a Nonlinear Coupled Vibration

Mill chatter in tandem cold rolling mill is a major rejection to the quality and production of the strips. In most mill vibration models, either the roll mass is usually limited to vibrate in

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Study on vibration characteristics of rolling mill based

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 established. Based on the main resonance singularity of the rolling mill

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A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  on 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 interest also, 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

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CHATTERBLOCK CHATTER VIBRATION IN COLD ROLLING*

2020-4-6  and 150Hz, is a self-excited vibration phenomena typically occurring in the rear stands of tandem cold mills. It can produce significant gauge variations and even cause strip breaks. 3rd octave mill chatter is characterized by a quickly diverging vertical vibration of the rolls for specific rolling conditions (material, mill speed, forces,

get price

Analysis of Vibration for Sendzimir Mill in Cold Rolling

2009-5-29  The vibration of cluster-type mills such as the 20-high Sendzimir mill is complicated due to their multi-roll structure. In order to clarify the vibration phenomenon in the Sendzimir mill, two simulation models were developed to calculate the natural frequencies of Sendzimir mill vibration, and the frequencies of mill vibration during the cold

get price

Research on Vibration of Tandem Cold Rolling Mill Based

In the light of chatter marks on the surface of high-class strip in 2180 tandem cold rolling mill, some comprehensive site tests were made. According to data analysis and inherent characteristics of vibration, the suspicious source of rolling mill vibration was found.

get price

Prediction and analysis of cold rolling mill vibration based

2020-9-10  Mill chatter is one of the most common problems in cold rolling. Thus, it is important to investigate the mill chatter phenomenon to ensure a high-speed and stable rolling process. The traditional mill chatter mechanism model cannot meet the monitoring

get price

Vibration analysis of Sendzimir cold rolling mill and

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 bite. Strip vibration applies a dynamic component on the rolling force acting on the work roll and may excite the resonance of the mill

get price

Study on vibration characteristics of rolling mill based

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 established. Based on the main resonance singularity of the rolling mill

get price

Vertical Vibration Control of Cold Rolling Mill’s Rolls

Abstract. In this paper, a two degree of freedom nonlinear vertical vibration equation of the cold rolling mill with the dynamic rolling force was established, then the delay feedback control method was introduced into the equation to controlled the vertical vibration of the system.

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An investigation on the roll force and torque fluctuations

2020-4-9  the same time, the increased running speed brings out possible vibration problems in the rolling process, especially in a cold strip mill. If the thickness variation of the hot-rolled aluminum strip can be reduced, it will be possible to increase the production speed of the cold strip mill. These claims set new demands on the acceptable rolling

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Risk Assessment and Control Measures for Cold Rolling

2015-8-7  Cold rolling mill complex is equipped with the most . modern stainless steel production lines, sourced from leading manufacturers of the world. Coil build up line, bell anneal furnaces continuous annealing and pickling lines, sendzimer mills, skin pass mill, strip grinding line, slitting and shearing lines to

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A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  on 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 interest also, 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

get price

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