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shape control in cold rolled mill

shape control in cold rolled mill

Shape and Gauge Control of Strip in a Cold Rolling

2020-10-6  Comprehensive control of the surface roughness and shape of a two stand cold reversing mill is achieved by the optimization of the process parameters, such as rolling force and tension. The rolling force, strip elongation rate, and tension of rolling mill are optimized to achieve comprehensive control of the surface quality and shape of the strip.

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Robust Shape Control in a Sendzimir Cold-Rolling

1996-6-1  The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness.

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ROBUST SHAPE CONTROL IN A SENDZIMIR COLD

2013-7-11  Robust Shape Control in a Sendzimir Cold-Rolling Steel Mill T(s) = GK(s)(1 + GK(s)) a (5) is the complementary sensitivity function, which determines robust stability and measurement (shapemeter) noise attenuation. The components considered in a robust control design are detailed in Fig. 3.

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Research and Development Trend of Shape Control

2017-7-19  The basic shape control means of cold rolling strip mainly include roll tilting, roll bending, roll shifting, roll cooling, roll profiles optimization, rolling process optimization, and so on.

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Shape Detecting and Shape Control of Cold Rolling

Based on the shape detecting principle and the DSP (Digital Signal Processing) technology, a high-precision shape detecting system of cold rolling strip is developed to meet industrial application. It was successfully used in Angang 1250 mm HC 6-high reversible cold rolling mill.

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Control Strategies of Asymmetric Strip Shape in Six

The combinations of these three control strategies can effectively eliminate asymmetric strip shape defects. Finally, the closed-loop control model of asymmetric flatness at the last stand was given, and the flatness control system with the function of asymmetric strip

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Control Strategies of Asymmetric Strip Shape in Six

2011-9-1  On one hand, artificial neural networks (ANN) method was applied to strip shape control. A fuzzy control algorithm was devel- oped to control the cold-rolled strip with symmetric irregular shapes by J Y Jung et alcg-'O1 and QIAO Jun-fei et alC1".

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Shape control of alloy steel rolled by sendzimir mill ...

Abstract. In order to improve quarter waves occurred in the wide and thin gauged alloy steel rolled by 20-high sendzimir mill, a computer simulation based on the divided element method and an actual cold rolling experiment were carried out. Quarter waves were simulated by elastic deformation analysis of rolls considering bending deformation of back ...

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Shape Control in Cluster Mills - Rolling Mill Technology ...

2009-11-6  number of ideas were produced. The first one came from Europe, where building a second "As-U-Roll" Crown Control System at the bottom of the mill, on shafts "F" and "G" (figure 8), was considered. Three mills were built with holes at the bottom of the housing to permit this system as a retrofit at a later date. (In the interim, they were used as oil evacuation holes to provide better flow of

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Strip Thickness Control of Cold Rolling Mill with Roll ...

2013-11-12  In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge, AGC) system used for Automatic correction strip thick-ness accuracy. One of the conventional control strat-egy of strip thickness is using of BISRA measurements to infer strip thickness. This relationship (more often referred to as

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shape control in cold rolled mill

Shape and Gauge Control of Strip in a Cold Rolling . 2020-10-6 Comprehensive control of the surface roughness and shape of a two stand cold reversing mill is achieved by the optimization of the process parameters, such as rolling force and tension.

More

Robust shape control in a sendzimir cold-rolling steel

1997-12-1  Robust Shape Control in a Sendzimir Cold-Rolling Steel Mill 1651 Note that, by virtue of the parameterisation in eq. (9), no attempt is made to control the high-order profiles, which accords with normal rolling practice. Parametric shape variations (with desired values of zero), which are shown as the output in Fig. 5, are given in Fig. 9.

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Research and Development Trend of Shape Control

2017-7-19  Shape is an important quality index of cold rolling strip. Up to now, many problems in the shape control domain have not been solved satisfactorily, and a review on the research progress in the shape control domain can help to seek new breakthrough directions. In the past 10 years, researches and applications of shape control models, shape control means, shape detection technology, and shape ...

More

Shape control of alloy steel rolled by sendzimir mill ...

In order to improve quarter waves occurred in the wide and thin gauged alloy steel rolled by 20-high sendzimir mill, a computer simulation based on the divided element method and an actual cold rolling experiment were carried out. Quarter waves were simulated by elastic deformation analysis of rolls considering bending deformation of back up rolls and the effect of control actuators on ...

More

Shape Control in Cluster Mills - Rolling Mill Technology ...

2009-11-6  ZR 21-AN mill section with a very small diameter work roll (65 mm). The net result was that the mill was able to take reductions of over 20% per pass on austenitic stainless steel and to keep the strip shape sufficiently flat to obtain good rolling. There are three other ways to add crown control through the upper cluster: 1.

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Control Strategies of Asymmetric Strip Shape in Six

2011-9-1  It is a complicated problem for cold-rolled strip to improve asymmetric strip shape in strip production. A roll system and strip coupled model of six-high cold rolling mill was established with finite element method to estimate the effect of intermediate roll shifting, tilting, symmetric and asymmetric bending technologies on strip profile. To reduce asymmetric defects of strip shape as much ...

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Strip Thickness Control of Cold Rolling Mill with Roll ...

2013-11-12  In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge, AGC) system used for Automatic correction strip thick-ness accuracy [9]. One of the conventional control strat-egy of strip thickness is using of BISRA measurements

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A Sheffield Hallam University thesis

2021-4-26  Shape of Cold Rolled Strip. Philip James Benstead ... mill rolling parameters on stainless steel strip shape. Experiments using sister coils, ... 2.2 Modelling of Sendzimir Mills for strip shape control 19 2.3 Rolling parameter effects on strip shape 21

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Mechanics of Cold Rolling of Thin Strip - IntechOpen

2018-9-25  mechanics. With the need for higher quality and productivity in cold strip mill, mathematical models of cold rolling of a strip with a desired shape and dimension, both for mill set-up and for on-line control, have become a key issue in the steel rolling process. One major part of these models concerns the strip and roll deformation ...

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ROLLED STRIP SHAPE CONTROL USING WORK ROLL

We claim 1. A method of controlling the shape of a rolled strip delivered from a rolling mill which contains a work roll and means to vary roll force created by said work roll, comprising: rolling a strip to final gauge while subjecting said strip to from about 0.25 percent to about 6 percent elongation in length while using a work roll size and a roll force within a range that, for said roll ...

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shape control in cold rolled mill

Shape and Gauge Control of Strip in a Cold Rolling . 2020-10-6 Comprehensive control of the surface roughness and shape of a two stand cold reversing mill is achieved by the optimization of the process parameters, such as rolling force and tension.

More

Research and Development Trend of Shape Control

2017-7-19  Shape is an important quality index of cold rolling strip. Up to now, many problems in the shape control domain have not been solved satisfactorily, and a review on the research progress in the shape control domain can help to seek new breakthrough directions. In the past 10 years, researches and applications of shape control models, shape control means, shape detection technology, and shape ...

More

Robust shape control in a sendzimir cold-rolling steel

The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness.

More

Robust shape control in a Sendzimir cold-rolling steel

The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of conditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness. Previous approaches to the problem suggest storing a large number of precompensator matrices to cater ...

More

Robust shape control in a Sendzimir cold-rolling steel

The shape control problem for a Sendzimir 20-roll cold rolling steel mill is characterised by operation over a wide range of coonditions arising from roll changes, changes in rolling schedules and changes in material gauge, width and hardness. Previous approaches to the problem suggest storing a large number of precompensator matrices to cater ...

More

Strip Thickness Control of Cold Rolling Mill with Roll ...

2013-11-12  In the cold rolling process and the precision is strip thickness of cold rolled strips of key quality products. Conventional Automatic roll gap Control (where Gauge, AGC) system used for Automatic correction strip thick-ness accuracy [9]. One of the conventional control strat-egy of strip thickness is using of BISRA measurements

More

Cold rolling shape defects of stainless steel wide strips

2010-12-9  Cold rolling shape defects of stainless steel wide strips Chiran Andrei, Moisa Bogdan, Nicolescu Georgian, Priceputu Ionut, Bacinschi Zorica Advances in Control, Chemical Engineering, Civil Engineering and Mechanical Engineering ISBN: 978-960-474-251-6 154 ... be rolled before the mill gets warm again. Thus, the temperature of the mill is ...

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A Sheffield Hallam University thesis

2021-4-26  Shape of Cold Rolled Strip. Philip James Benstead ... mill rolling parameters on stainless steel strip shape. Experiments using sister coils, ... 2.2 Modelling of Sendzimir Mills for strip shape control 19 2.3 Rolling parameter effects on strip shape 21

More

ROLLED STRIP SHAPE CONTROL USING WORK ROLL

We claim 1. A method of controlling the shape of a rolled strip delivered from a rolling mill which contains a work roll and means to vary roll force created by said work roll, comprising: rolling a strip to final gauge while subjecting said strip to from about 0.25 percent to about 6 percent elongation in length while using a work roll size and a roll force within a range that, for said roll ...

More

Fundamentals of Roll Cooling and Control of Flatness at ...

2021-1-18  Fig 2, Heat Migration in Cold Mill Work rolls (Hotter regions shown in red) This localized heat input / output process results in a non-uniform distribution of heat, circumferentially around the roll and transversely across the roll body. Additionally the roll is subjected to Thermal and

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